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termux-packages/packages/ndk-sysroot/gcc_fixes.diff

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This patch reverts
github.com/aosp-mirror/platform_bionic/commit/b7b2884a2130c32b3ca7228891a0a9aa934a9be7
and includes part of
github.com/termux/termux-packages/commit/3da018dde122ae90ff82e9733c096e3c75331fe1.
Compiling the following testfile with `gcc -D_FORTIFY_SOURCE=2 -O3` shows most of the problems:
```
#include <sys/cdefs.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <bits/ioctl.h>
#include <fcntl.h>
int main()
{
return 0;
}
```
One of the fixes (in string.h) is c++ specific and is shown by compiling the following testfile with `g++`:
```
#include <stdio.h>
#include <stdlib.h>
int main()
{
return 0;
}
```
diff -u -r ./include.orig/bits/fortify/fcntl.h ./include/bits/fortify/fcntl.h
--- ./include.orig/bits/fortify/fcntl.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/fcntl.h 2020-02-01 21:07:32.928341533 +0100
@@ -48,6 +48,7 @@
#define __open_useless_modes_warning "has superfluous mode bits; missing O_CREAT?"
/* O_TMPFILE shares bits with O_DIRECTORY. */
#define __open_modes_useful(flags) (((flags) & O_CREAT) || ((flags) & O_TMPFILE) == O_TMPFILE)
+#if defined(__clang__)
#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
__BIONIC_ERROR_FUNCTION_VISIBILITY
@@ -96,6 +97,52 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+#else /* defined(__clang__) */
+__errordecl(__creat_missing_mode, __open_too_few_args_error);
+__errordecl(__creat_too_many_args, __open_too_many_args_error);
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
+__BIONIC_FORTIFY_VARIADIC
+int open(const char* pathname, int flags, ...) {
+ if (__builtin_constant_p(flags)) {
+ if (__open_modes_useful(flags) && __builtin_va_arg_pack_len() == 0) {
+ __creat_missing_mode(); /* Compile time error. */
+ }
+ }
+
+ if (__builtin_va_arg_pack_len() > 1) {
+ __creat_too_many_args(); /* Compile time error. */
+ }
+
+ if ((__builtin_va_arg_pack_len() == 0) && !__builtin_constant_p(flags)) {
+ return __open_2(pathname, flags);
+ }
+
+ return __open_real(pathname, flags, __builtin_va_arg_pack());
+}
+
+__BIONIC_FORTIFY_VARIADIC
+int openat(int dirfd, const char* pathname, int flags, ...) {
+ if (__builtin_constant_p(flags)) {
+ if (__open_modes_useful(flags) && __builtin_va_arg_pack_len() == 0) {
+ __creat_missing_mode(); /* Compile time error. */
+ }
+ }
+
+ if (__builtin_va_arg_pack_len() > 1) {
+ __creat_too_many_args(); /* Compile time error. */
+ }
+
+ if ((__builtin_va_arg_pack_len() == 0) && !__builtin_constant_p(flags)) {
+ return __openat_2(dirfd, pathname, flags);
+ }
+
+ return __openat_real(dirfd, pathname, flags, __builtin_va_arg_pack());
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+
+#endif /* defined(__clang__) */
+
#undef __open_too_many_args_error
#undef __open_too_few_args_error
#undef __open_useless_modes_warning
diff -u -r ./include.orig/bits/fortify/poll.h ./include/bits/fortify/poll.h
--- ./include.orig/bits/fortify/poll.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/poll.h 2020-02-01 21:07:32.928341533 +0100
@@ -44,7 +44,7 @@
#if defined(__BIONIC_FORTIFY)
#if __ANDROID_API__ >= __ANDROID_API_M__
-
+#if defined(__clang__)
__BIONIC_FORTIFY_INLINE
int poll(struct pollfd* const fds __pass_object_size, nfds_t fd_count, int timeout)
__overloadable
@@ -89,5 +89,39 @@
}
#endif
+#else /* !defined(__clang__) */
+int __poll_real(struct pollfd*, nfds_t, int) __RENAME(poll);
+__errordecl(__poll_too_small_error, "poll: pollfd array smaller than fd count");
+
+int __ppoll_real(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*) __RENAME(ppoll)
+ __INTRODUCED_IN(21);
+__errordecl(__ppoll_too_small_error, "ppoll: pollfd array smaller than fd count");
+
+__BIONIC_FORTIFY_INLINE
+int poll(struct pollfd* fds, nfds_t fd_count, int timeout) {
+ if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ if (!__builtin_constant_p(fd_count)) {
+ return __poll_chk(fds, fd_count, timeout, __bos(fds));
+ } else if (__bos(fds) / sizeof(*fds) < fd_count) {
+ __poll_too_small_error();
+ }
+ }
+ return __poll_real(fds, fd_count, timeout);
+}
+
+__BIONIC_FORTIFY_INLINE
+int ppoll(struct pollfd* fds, nfds_t fd_count, const struct timespec* timeout,
+ const sigset_t* mask) {
+ if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ if (!__builtin_constant_p(fd_count)) {
+ return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds));
+ } else if (__bos(fds) / sizeof(*fds) < fd_count) {
+ __ppoll_too_small_error();
+ }
+ }
+ return __ppoll_real(fds, fd_count, timeout, mask);
+}
+
+#endif /* defined(__clang__) */
#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */
#endif /* defined(__BIONIC_FORTIFY) */
diff -u -r ./include.orig/bits/fortify/socket.h ./include/bits/fortify/socket.h
--- ./include.orig/bits/fortify/socket.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/socket.h 2020-02-01 21:07:32.928341533 +0100
@@ -47,7 +47,7 @@
#define __recvfrom_bad_size "'recvfrom' called with size bigger than buffer"
#define __sendto_bad_size "'sendto' called with size bigger than buffer"
-
+#if defined(__clang__)
#if __ANDROID_API__ >= __ANDROID_API_N__
__BIONIC_FORTIFY_INLINE
ssize_t recvfrom(int fd, void* const buf __pass_object_size0, size_t len, int flags, struct sockaddr* src_addr, socklen_t* addr_len)
@@ -94,6 +94,69 @@
return sendto(socket, buf, len, flags, NULL, 0);
}
+#else /* defined(__clang__) */
+ssize_t __recvfrom_real(int, void*, size_t, int, struct sockaddr*, socklen_t*) __RENAME(recvfrom);
+__errordecl(__recvfrom_error, __recvfrom_bad_size);
+
+extern ssize_t __sendto_real(int, const void*, size_t, int, const struct sockaddr*, socklen_t)
+ __RENAME(sendto);
+__errordecl(__sendto_error, __sendto_bad_size);
+
+#if __ANDROID_API__ >= __ANDROID_API_N__
+__BIONIC_FORTIFY_INLINE
+ssize_t recvfrom(int fd, void* buf, size_t len, int flags,
+ struct sockaddr* src_addr, socklen_t* addr_len) {
+ size_t bos = __bos0(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __recvfrom_real(fd, buf, len, flags, src_addr, addr_len);
+ }
+
+ if (__builtin_constant_p(len) && (len <= bos)) {
+ return __recvfrom_real(fd, buf, len, flags, src_addr, addr_len);
+ }
+
+ if (__builtin_constant_p(len) && (len > bos)) {
+ __recvfrom_error();
+ }
+
+ return __recvfrom_chk(fd, buf, len, bos, flags, src_addr, addr_len);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_N_MR1__
+__BIONIC_FORTIFY_INLINE
+ssize_t sendto(int fd, const void* buf, size_t len, int flags,
+ const struct sockaddr* dest_addr, socklen_t addr_len) {
+ size_t bos = __bos0(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __sendto_real(fd, buf, len, flags, dest_addr, addr_len);
+ }
+
+ if (__builtin_constant_p(len) && (len <= bos)) {
+ return __sendto_real(fd, buf, len, flags, dest_addr, addr_len);
+ }
+
+ if (__builtin_constant_p(len) && (len > bos)) {
+ __sendto_error();
+ }
+
+ return __sendto_chk(fd, buf, len, bos, flags, dest_addr, addr_len);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N_MR1__ */
+
+__BIONIC_FORTIFY_INLINE
+ssize_t recv(int socket, void* buf, size_t len, int flags) {
+ return recvfrom(socket, buf, len, flags, NULL, 0);
+}
+
+__BIONIC_FORTIFY_INLINE
+ssize_t send(int socket, const void* buf, size_t len, int flags) {
+ return sendto(socket, buf, len, flags, NULL, 0);
+}
+#endif /* defined(__clang__) */
+
#undef __recvfrom_bad_size
#undef __sendto_bad_size
#endif /* __BIONIC_FORTIFY */
diff -u -r ./include.orig/bits/fortify/stat.h ./include/bits/fortify/stat.h
--- ./include.orig/bits/fortify/stat.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/stat.h 2020-02-01 21:07:32.928341533 +0100
@@ -39,6 +39,8 @@
#if defined(__BIONIC_FORTIFY)
#define __umask_invalid_mode_str "'umask' called with invalid mode"
+#if defined(__clang__)
+
#if __ANDROID_API__ >= __ANDROID_API_J_MR2__
/* Abuse enable_if to make this an overload of umask. */
__BIONIC_FORTIFY_INLINE
@@ -50,6 +52,24 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR2__ */
+#else /* defined(__clang__) */
+__errordecl(__umask_invalid_mode, __umask_invalid_mode_str);
+extern mode_t __umask_real(mode_t) __RENAME(umask);
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR2__
+__BIONIC_FORTIFY_INLINE
+mode_t umask(mode_t mode) {
+ if (__builtin_constant_p(mode)) {
+ if ((mode & 0777) != mode) {
+ __umask_invalid_mode();
+ }
+ return __umask_real(mode);
+ }
+ return __umask_chk(mode);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR2__ */
+
+#endif /* defined(__clang__) */
#undef __umask_invalid_mode_str
#endif /* defined(__BIONIC_FORTIFY) */
diff -u -r ./include.orig/bits/fortify/stdio.h ./include/bits/fortify/stdio.h
--- ./include.orig/bits/fortify/stdio.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/stdio.h 2020-02-01 21:07:32.928341533 +0100
@@ -57,6 +57,7 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+#if defined(__clang__)
#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
/*
* Simple case: `format` can't have format specifiers, so we can just compare
@@ -148,4 +149,114 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+#else /* defined(__clang__) */
+
+size_t __fread_real(void*, size_t, size_t, FILE*) __RENAME(fread);
+__errordecl(__fread_too_big_error, "fread called with size * count bigger than buffer");
+__errordecl(__fread_overflow, "fread called with overflowing size * count");
+
+char* __fgets_real(char*, int, FILE*) __RENAME(fgets);
+__errordecl(__fgets_too_big_error, "fgets called with size bigger than buffer");
+__errordecl(__fgets_too_small_error, "fgets called with size less than zero");
+
+size_t __fwrite_real(const void*, size_t, size_t, FILE*) __RENAME(fwrite);
+__errordecl(__fwrite_too_big_error, "fwrite called with size * count bigger than buffer");
+__errordecl(__fwrite_overflow, "fwrite called with overflowing size * count");
+
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
+__BIONIC_FORTIFY_VARIADIC __printflike(3, 4)
+int snprintf(char* dest, size_t size, const char* format, ...) {
+ return __builtin___snprintf_chk(dest, size, 0, __bos(dest), format, __builtin_va_arg_pack());
+}
+
+__BIONIC_FORTIFY_VARIADIC __printflike(2, 3)
+int sprintf(char* dest, const char* format, ...) {
+ return __builtin___sprintf_chk(dest, 0, __bos(dest), format, __builtin_va_arg_pack());
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_N__
+__BIONIC_FORTIFY_INLINE
+size_t fread(void* buf, size_t size, size_t count, FILE* stream) {
+ size_t bos = __bos0(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __fread_real(buf, size, count, stream);
+ }
+
+ if (__builtin_constant_p(size) && __builtin_constant_p(count)) {
+ size_t total;
+ if (__size_mul_overflow(size, count, &total)) {
+ __fread_overflow();
+ }
+
+ if (total > bos) {
+ __fread_too_big_error();
+ }
+
+ return __fread_real(buf, size, count, stream);
+ }
+
+ return __fread_chk(buf, size, count, stream, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+size_t fwrite(const void* buf, size_t size, size_t count, FILE* stream) {
+ size_t bos = __bos0(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __fwrite_real(buf, size, count, stream);
+ }
+
+ if (__builtin_constant_p(size) && __builtin_constant_p(count)) {
+ size_t total;
+ if (__size_mul_overflow(size, count, &total)) {
+ __fwrite_overflow();
+ }
+
+ if (total > bos) {
+ __fwrite_too_big_error();
+ }
+
+ return __fwrite_real(buf, size, count, stream);
+ }
+
+ return __fwrite_chk(buf, size, count, stream, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
+__BIONIC_FORTIFY_INLINE
+char *fgets(char* dest, int size, FILE* stream) {
+ size_t bos = __bos(dest);
+
+ // Compiler can prove, at compile time, that the passed in size
+ // is always negative. Force a compiler error.
+ if (__builtin_constant_p(size) && (size < 0)) {
+ __fgets_too_small_error();
+ }
+
+ // Compiler doesn't know destination size. Don't call __fgets_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __fgets_real(dest, size, stream);
+ }
+
+ // Compiler can prove, at compile time, that the passed in size
+ // is always <= the actual object size. Don't call __fgets_chk
+ if (__builtin_constant_p(size) && (size <= (int) bos)) {
+ return __fgets_real(dest, size, stream);
+ }
+
+ // Compiler can prove, at compile time, that the passed in size
+ // is always > the actual object size. Force a compiler error.
+ if (__builtin_constant_p(size) && (size > (int) bos)) {
+ __fgets_too_big_error();
+ }
+
+ return __fgets_chk(dest, size, stream, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+
+#endif /* defined(__clang__) */
#endif /* defined(__BIONIC_FORTIFY) */
diff -u -r ./include.orig/bits/fortify/stdlib.h ./include/bits/fortify/stdlib.h
--- ./include.orig/bits/fortify/stdlib.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/stdlib.h 2020-02-01 21:07:32.928341533 +0100
@@ -37,12 +37,31 @@
/* PATH_MAX is unavailable without polluting the namespace, but it's always 4096 on Linux */
#define __PATH_MAX 4096
+#if defined(__clang__)
char* realpath(const char* path, char* resolved)
__clang_error_if(__bos(resolved) != __BIONIC_FORTIFY_UNKNOWN_SIZE &&
__bos(resolved) < __PATH_MAX, __realpath_buf_too_small_str)
__clang_error_if(!path, "'realpath': NULL path is never correct; flipped arguments?");
/* No need for a definition; the only issues we can catch are at compile-time. */
+#else /* defined(__clang__) */
+
+char* __realpath_real(const char*, char*) __RENAME(realpath);
+__errordecl(__realpath_size_error, __realpath_buf_too_small_str);
+
+__BIONIC_FORTIFY_INLINE
+char* realpath(const char* path, char* resolved) {
+ size_t bos = __bos(resolved);
+
+ if (bos != __BIONIC_FORTIFY_UNKNOWN_SIZE && bos < __PATH_MAX) {
+ __realpath_size_error();
+ }
+
+ return __realpath_real(path, resolved);
+}
+
+#endif /* defined(__clang__) */
+
#undef __PATH_MAX
#undef __realpath_buf_too_small_str
#endif /* defined(__BIONIC_FORTIFY) */
diff -u -r ./include.orig/bits/fortify/string.h ./include/bits/fortify/string.h
--- ./include.orig/bits/fortify/string.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/string.h 2020-02-01 21:07:32.928341533 +0100
@@ -52,6 +52,8 @@
#if defined(__BIONIC_FORTIFY)
extern void* __memrchr_real(const void*, int, size_t) __RENAME(memrchr);
+// These can share their implementation between gcc and clang with minimal
+// trickery...
#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
__BIONIC_FORTIFY_INLINE
void* memcpy(void* const dst __pass_object_size0, const void* src, size_t copy_amount)
@@ -112,6 +114,9 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+
+#if defined(__clang__)
+
#if __ANDROID_API__ >= __ANDROID_API_M__
__BIONIC_FORTIFY_INLINE
void* memchr(const void* const s __pass_object_size, int c, size_t n) __overloadable {
@@ -238,6 +243,192 @@
}
#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR2__ */
+#else // defined(__clang__)
+extern char* __strncpy_real(char*, const char*, size_t) __RENAME(strncpy);
+extern size_t __strlcpy_real(char*, const char*, size_t)
+ __RENAME(strlcpy);
+extern size_t __strlcat_real(char*, const char*, size_t)
+ __RENAME(strlcat);
+
+__errordecl(__memchr_buf_size_error, "memchr called with size bigger than buffer");
+__errordecl(__memrchr_buf_size_error, "memrchr called with size bigger than buffer");
+
+#if __ANDROID_API__ >= __ANDROID_API_M__
+__BIONIC_FORTIFY_INLINE
+void* memchr(const void* s __pass_object_size, int c, size_t n) {
+ size_t bos = __bos(s);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __builtin_memchr(s, c, n);
+ }
+
+ if (__builtin_constant_p(n) && (n > bos)) {
+ __memchr_buf_size_error();
+ }
+
+ if (__builtin_constant_p(n) && (n <= bos)) {
+ return __builtin_memchr(s, c, n);
+ }
+
+ return __memchr_chk(s, c, n, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+void* __memrchr_fortify(const void* s, int c, size_t n) {
+ size_t bos = __bos(s);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __memrchr_real(s, c, n);
+ }
+
+ if (__builtin_constant_p(n) && (n > bos)) {
+ __memrchr_buf_size_error();
+ }
+
+ if (__builtin_constant_p(n) && (n <= bos)) {
+ return __memrchr_real(s, c, n);
+ }
+
+ return __memrchr_chk(s, c, n, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_L__
+__BIONIC_FORTIFY_INLINE
+char* stpncpy(char* dst, const char* src, size_t n) {
+ size_t bos_dst = __bos(dst);
+ size_t bos_src = __bos(src);
+
+ if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __builtin___stpncpy_chk(dst, src, n, bos_dst);
+ }
+
+ if (__builtin_constant_p(n) && (n <= bos_src)) {
+ return __builtin___stpncpy_chk(dst, src, n, bos_dst);
+ }
+
+ size_t slen = __builtin_strlen(src);
+ if (__builtin_constant_p(slen)) {
+ return __builtin___stpncpy_chk(dst, src, n, bos_dst);
+ }
+
+ return __stpncpy_chk2(dst, src, n, bos_dst, bos_src);
+}
+
+__BIONIC_FORTIFY_INLINE
+char* strncpy(char* dst, const char* src, size_t n) {
+ size_t bos_dst = __bos(dst);
+ size_t bos_src = __bos(src);
+
+ if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __strncpy_real(dst, src, n);
+ }
+
+ if (__builtin_constant_p(n) && (n <= bos_src)) {
+ return __builtin___strncpy_chk(dst, src, n, bos_dst);
+ }
+
+ size_t slen = __builtin_strlen(src);
+ if (__builtin_constant_p(slen)) {
+ return __builtin___strncpy_chk(dst, src, n, bos_dst);
+ }
+
+ return __strncpy_chk2(dst, src, n, bos_dst, bos_src);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_L__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR1__
+__BIONIC_FORTIFY_INLINE
+size_t strlcpy(char* dst __pass_object_size, const char* src, size_t size) {
+ size_t bos = __bos(dst);
+
+ // Compiler doesn't know destination size. Don't call __strlcpy_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __strlcpy_real(dst, src, size);
+ }
+
+ // Compiler can prove, at compile time, that the passed in size
+ // is always <= the actual object size. Don't call __strlcpy_chk
+ if (__builtin_constant_p(size) && (size <= bos)) {
+ return __strlcpy_real(dst, src, size);
+ }
+
+ return __strlcpy_chk(dst, src, size, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+size_t strlcat(char* dst, const char* src, size_t size) {
+ size_t bos = __bos(dst);
+
+ // Compiler doesn't know destination size. Don't call __strlcat_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __strlcat_real(dst, src, size);
+ }
+
+ // Compiler can prove, at compile time, that the passed in size
+ // is always <= the actual object size. Don't call __strlcat_chk
+ if (__builtin_constant_p(size) && (size <= bos)) {
+ return __strlcat_real(dst, src, size);
+ }
+
+ return __strlcat_chk(dst, src, size, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+size_t strlen(const char* s) __overloadable {
+ size_t bos = __bos(s);
+
+ // Compiler doesn't know destination size. Don't call __strlen_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __builtin_strlen(s);
+ }
+
+ size_t slen = __builtin_strlen(s);
+ if (__builtin_constant_p(slen)) {
+ return slen;
+ }
+
+ return __strlen_chk(s, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR1__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_J_MR2__
+__BIONIC_FORTIFY_INLINE
+char* strchr(const char* s, int c) {
+ size_t bos = __bos(s);
+
+ // Compiler doesn't know destination size. Don't call __strchr_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __builtin_strchr(s, c);
+ }
+
+ size_t slen = __builtin_strlen(s);
+ if (__builtin_constant_p(slen) && (slen < bos)) {
+ return __builtin_strchr(s, c);
+ }
+
+ return __strchr_chk(s, c, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+char* strrchr(const char* s, int c) {
+ size_t bos = __bos(s);
+
+ // Compiler doesn't know destination size. Don't call __strrchr_chk
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __builtin_strrchr(s, c);
+ }
+
+ size_t slen = __builtin_strlen(s);
+ if (__builtin_constant_p(slen) && (slen < bos)) {
+ return __builtin_strrchr(s, c);
+ }
+
+ return __strrchr_chk(s, c, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_J_MR2__ */
+#endif /* defined(__clang__) */
+
#if __ANDROID_API__ >= __ANDROID_API_M__
#if defined(__cplusplus)
extern "C++" {
diff -u -r ./include.orig/bits/fortify/unistd.h ./include/bits/fortify/unistd.h
--- ./include.orig/bits/fortify/unistd.h 2020-02-01 20:58:17.575298128 +0100
+++ ./include/bits/fortify/unistd.h 2020-02-01 21:07:32.928341533 +0100
@@ -91,6 +91,7 @@
#define __PWRITE_PREFIX(x) __pwrite_ ## x
#endif
+#if defined(__clang__)
#define __error_if_overflows_ssizet(what, fn) \
__clang_error_if((what) > SSIZE_MAX, "in call to '" #fn "', '" #what "' must be <= SSIZE_MAX")
@@ -238,6 +239,243 @@
#undef __enable_if_no_overflow_ssizet
#undef __error_if_overflows_objectsize
#undef __error_if_overflows_ssizet
+#else /* defined(__clang__) */
+
+char* __getcwd_real(char*, size_t) __RENAME(getcwd);
+ssize_t __read_real(int, void*, size_t) __RENAME(read);
+ssize_t __write_real(int, const void*, size_t) __RENAME(write);
+ssize_t __readlink_real(const char*, char*, size_t) __RENAME(readlink);
+ssize_t __readlinkat_real(int dirfd, const char*, char*, size_t) __RENAME(readlinkat);
+
+__errordecl(__getcwd_dest_size_error, "getcwd called with size bigger than destination");
+__errordecl(__pread_dest_size_error, "pread called with size bigger than destination");
+__errordecl(__pread_count_toobig_error, "pread called with count > SSIZE_MAX");
+__errordecl(__pread64_dest_size_error, "pread64 called with size bigger than destination");
+__errordecl(__pread64_count_toobig_error, "pread64 called with count > SSIZE_MAX");
+__errordecl(__pwrite_dest_size_error, "pwrite called with size bigger than destination");
+__errordecl(__pwrite_count_toobig_error, "pwrite called with count > SSIZE_MAX");
+__errordecl(__pwrite64_dest_size_error, "pwrite64 called with size bigger than destination");
+__errordecl(__pwrite64_count_toobig_error, "pwrite64 called with count > SSIZE_MAX");
+__errordecl(__read_dest_size_error, "read called with size bigger than destination");
+__errordecl(__read_count_toobig_error, "read called with count > SSIZE_MAX");
+__errordecl(__write_dest_size_error, "write called with size bigger than destination");
+__errordecl(__write_count_toobig_error, "write called with count > SSIZE_MAX");
+__errordecl(__readlink_dest_size_error, "readlink called with size bigger than destination");
+__errordecl(__readlink_size_toobig_error, "readlink called with size > SSIZE_MAX");
+__errordecl(__readlinkat_dest_size_error, "readlinkat called with size bigger than destination");
+__errordecl(__readlinkat_size_toobig_error, "readlinkat called with size > SSIZE_MAX");
+
+#if __ANDROID_API__ >= __ANDROID_API_N__
+__BIONIC_FORTIFY_INLINE
+char* getcwd(char* buf, size_t size) __overloadable {
+ size_t bos = __bos(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __getcwd_real(buf, size);
+ }
+
+ if (__builtin_constant_p(size) && (size > bos)) {
+ __getcwd_dest_size_error();
+ }
+
+ if (__builtin_constant_p(size) && (size <= bos)) {
+ return __getcwd_real(buf, size);
+ }
+
+ return __getcwd_chk(buf, size, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_M__
+__BIONIC_FORTIFY_INLINE
+ssize_t pread(int fd, void* buf, size_t count, off_t offset) {
+ size_t bos = __bos0(buf);
+
+ if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+ __PREAD_PREFIX(count_toobig_error)();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __PREAD_PREFIX(real)(fd, buf, count, offset);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __PREAD_PREFIX(dest_size_error)();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __PREAD_PREFIX(real)(fd, buf, count, offset);
+ }
+
+ return __PREAD_PREFIX(chk)(fd, buf, count, offset, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+ssize_t pread64(int fd, void* buf, size_t count, off64_t offset) {
+ size_t bos = __bos0(buf);
+
+ if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+ __pread64_count_toobig_error();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __pread64_real(fd, buf, count, offset);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __pread64_dest_size_error();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __pread64_real(fd, buf, count, offset);
+ }
+
+ return __pread64_chk(fd, buf, count, offset, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_N__
+__BIONIC_FORTIFY_INLINE
+ssize_t pwrite(int fd, const void* buf, size_t count, off_t offset) {
+ size_t bos = __bos0(buf);
+
+ if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+ __PWRITE_PREFIX(count_toobig_error)();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __PWRITE_PREFIX(real)(fd, buf, count, offset);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __PWRITE_PREFIX(dest_size_error)();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __PWRITE_PREFIX(real)(fd, buf, count, offset);
+ }
+
+ return __PWRITE_PREFIX(chk)(fd, buf, count, offset, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+ssize_t pwrite64(int fd, const void* buf, size_t count, off64_t offset) {
+ size_t bos = __bos0(buf);
+
+ if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+ __pwrite64_count_toobig_error();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __pwrite64_real(fd, buf, count, offset);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __pwrite64_dest_size_error();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __pwrite64_real(fd, buf, count, offset);
+ }
+
+ return __pwrite64_chk(fd, buf, count, offset, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_L__
+__BIONIC_FORTIFY_INLINE
+ssize_t read(int fd, void* buf, size_t count) {
+ size_t bos = __bos0(buf);
+
+ if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+ __read_count_toobig_error();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __read_real(fd, buf, count);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __read_dest_size_error();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __read_real(fd, buf, count);
+ }
+
+ return __read_chk(fd, buf, count, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_L__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_N__
+__BIONIC_FORTIFY_INLINE
+ssize_t write(int fd, const void* buf, size_t count) {
+ size_t bos = __bos0(buf);
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __write_real(fd, buf, count);
+ }
+
+ if (__builtin_constant_p(count) && (count > bos)) {
+ __write_dest_size_error();
+ }
+
+ if (__builtin_constant_p(count) && (count <= bos)) {
+ return __write_real(fd, buf, count);
+ }
+
+ return __write_chk(fd, buf, count, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
+
+#if __ANDROID_API__ >= __ANDROID_API_M__
+__BIONIC_FORTIFY_INLINE
+ssize_t readlink(const char* path, char* buf, size_t size) {
+ size_t bos = __bos(buf);
+
+ if (__builtin_constant_p(size) && (size > SSIZE_MAX)) {
+ __readlink_size_toobig_error();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __readlink_real(path, buf, size);
+ }
+
+ if (__builtin_constant_p(size) && (size > bos)) {
+ __readlink_dest_size_error();
+ }
+
+ if (__builtin_constant_p(size) && (size <= bos)) {
+ return __readlink_real(path, buf, size);
+ }
+
+ return __readlink_chk(path, buf, size, bos);
+}
+
+__BIONIC_FORTIFY_INLINE
+ssize_t readlinkat(int dirfd, const char* path, char* buf, size_t size) {
+ size_t bos = __bos(buf);
+
+ if (__builtin_constant_p(size) && (size > SSIZE_MAX)) {
+ __readlinkat_size_toobig_error();
+ }
+
+ if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+ return __readlinkat_real(dirfd, path, buf, size);
+ }
+
+ if (__builtin_constant_p(size) && (size > bos)) {
+ __readlinkat_dest_size_error();
+ }
+
+ if (__builtin_constant_p(size) && (size <= bos)) {
+ return __readlinkat_real(dirfd, path, buf, size);
+ }
+
+ return __readlinkat_chk(dirfd, path, buf, size, bos);
+}
+#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */
+#endif /* defined(__clang__) */
#undef __PREAD_PREFIX
#undef __PWRITE_PREFIX
#endif /* defined(__BIONIC_FORTIFY) */
diff -u -r ./include.orig/bits/ioctl.h ./include/bits/ioctl.h
--- ./include.orig/bits/ioctl.h 2020-02-01 20:58:17.574298128 +0100
+++ ./include/bits/ioctl.h 2020-02-01 21:22:39.931412423 +0100
@@ -55,7 +55,7 @@
* - defining BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD, which will make the
* overloading go away.
*/
-#if !defined(BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD)
+#if defined(__clang__)&& !defined(BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD)
/* enable_if(1) just exists to break overloading ties. */
int ioctl(int __fd, unsigned __request, ...) __overloadable __enable_if(1, "") __RENAME(ioctl);
#endif
diff -u -r ./include.orig/complex.h ./include/complex.h
--- ./include.orig/complex.h 2020-02-01 20:58:17.819298147 +0100
+++ ./include/complex.h 2020-02-01 21:07:32.943341534 +0100
@@ -44,9 +44,15 @@
#define I _Complex_I
#if __STDC_VERSION__ >= 201112L
+#ifdef __clang__
#define CMPLX(x, y) ((double complex){ x, y })
#define CMPLXF(x, y) ((float complex){ x, y })
#define CMPLXL(x, y) ((long double complex){ x, y })
+#else
+#define CMPLX(x, y) __builtin_complex((double)(x), (double)(y))
+#define CMPLXF(x, y) __builtin_complex((float)(x), (float)(y))
+#define CMPLXL(x, y) __builtin_complex((long double)(x), (long double)(y))
+#endif
#endif
__BEGIN_DECLS
diff -u -r ./include.orig/stdatomic.h ./include/stdatomic.h
--- ./include.orig/stdatomic.h 2020-02-01 20:58:17.565298127 +0100
+++ ./include/stdatomic.h 2020-02-01 21:07:32.915341532 +0100
@@ -33,7 +33,11 @@
#include <sys/cdefs.h>
#if defined(__cplusplus) && __cplusplus >= 201103L && defined(_USING_LIBCXX)
-# if __has_feature(cxx_atomic)
+# ifdef __clang__
+# if __has_feature(cxx_atomic)
+# define _STDATOMIC_HAVE_ATOMIC
+# endif
+# else /* gcc */
# define _STDATOMIC_HAVE_ATOMIC
# endif
#endif
@@ -146,6 +150,20 @@
# include <uchar.h> /* For char16_t and char32_t. */
#endif
+
+#ifdef __clang__
+# if __has_extension(c_atomic) || __has_extension(cxx_atomic)
+# define __CLANG_ATOMICS
+# else
+# error "stdatomic.h does not support your compiler"
+# endif
+# if __has_builtin(__sync_swap)
+# define __HAS_BUILTIN_SYNC_SWAP
+# endif
+#else
+# define __GNUC_ATOMICS
+#endif
+
/*
* 7.17.1 Atomic lock-free macros.
*/
@@ -185,8 +203,13 @@
* 7.17.2 Initialization.
*/
+#if defined(__CLANG_ATOMICS)
#define ATOMIC_VAR_INIT(value) (value)
#define atomic_init(obj, value) __c11_atomic_init(obj, value)
+#else
+#define ATOMIC_VAR_INIT(value) { .__val = (value) }
+#define atomic_init(obj, value) ((void)((obj)->__val = (value)))
+#endif
/*
* Clang and recent GCC both provide predefined macros for the memory
@@ -235,24 +258,63 @@
* 7.17.4 Fences.
*/
-static __inline void atomic_thread_fence(memory_order __order __attribute__((unused))) {
+static __inline void
+atomic_thread_fence(memory_order __order __attribute__((unused)))
+{
+
+#ifdef __CLANG_ATOMICS
__c11_atomic_thread_fence(__order);
+#elif defined(__GNUC_ATOMICS)
+ __atomic_thread_fence(__order);
+#else
+ __sync_synchronize();
+#endif
}
-static __inline void atomic_signal_fence(memory_order __order __attribute__((unused))) {
+static __inline void
+atomic_signal_fence(memory_order __order __attribute__((unused)))
+{
+
+#ifdef __CLANG_ATOMICS
__c11_atomic_signal_fence(__order);
+#elif defined(__GNUC_ATOMICS)
+ __atomic_signal_fence(__order);
+#else
+ __asm volatile ("" ::: "memory");
+#endif
}
/*
* 7.17.5 Lock-free property.
*/
-#define atomic_is_lock_free(obj) __c11_atomic_is_lock_free(sizeof(*(obj)))
+#if defined(_KERNEL)
+/* Atomics in kernelspace are always lock-free. */
+#define atomic_is_lock_free(obj) \
+ ((void)(obj), (_Bool)1)
+#elif defined(__CLANG_ATOMICS)
+#define atomic_is_lock_free(obj) \
+ __c11_atomic_is_lock_free(sizeof(*(obj)))
+#elif defined(__GNUC_ATOMICS)
+#define atomic_is_lock_free(obj) \
+ __atomic_is_lock_free(sizeof((obj)->__val), &(obj)->__val)
+#else
+#define atomic_is_lock_free(obj) \
+ ((void)(obj), sizeof((obj)->__val) <= sizeof(void *))
+#endif
/*
* 7.17.6 Atomic integer types.
*/
+#ifndef __CLANG_ATOMICS
+/*
+ * No native support for _Atomic(). Place object in structure to prevent
+ * most forms of direct non-atomic access.
+ */
+#define _Atomic(T) struct { T volatile __val; }
+#endif
+
typedef _Atomic(bool) atomic_bool;
typedef _Atomic(char) atomic_char;
typedef _Atomic(signed char) atomic_schar;
@@ -301,6 +363,7 @@
* Compiler-specific operations.
*/
+#if defined(__CLANG_ATOMICS)
#define atomic_compare_exchange_strong_explicit(object, expected, \
desired, success, failure) \
__c11_atomic_compare_exchange_strong(object, expected, desired, \
@@ -325,11 +388,91 @@
__c11_atomic_load(object, order)
#define atomic_store_explicit(object, desired, order) \
__c11_atomic_store(object, desired, order)
+#elif defined(__GNUC_ATOMICS)
+#define atomic_compare_exchange_strong_explicit(object, expected, \
+ desired, success, failure) \
+ __atomic_compare_exchange_n(&(object)->__val, expected, \
+ desired, 0, success, failure)
+#define atomic_compare_exchange_weak_explicit(object, expected, \
+ desired, success, failure) \
+ __atomic_compare_exchange_n(&(object)->__val, expected, \
+ desired, 1, success, failure)
+#define atomic_exchange_explicit(object, desired, order) \
+ __atomic_exchange_n(&(object)->__val, desired, order)
+#define atomic_fetch_add_explicit(object, operand, order) \
+ __atomic_fetch_add(&(object)->__val, operand, order)
+#define atomic_fetch_and_explicit(object, operand, order) \
+ __atomic_fetch_and(&(object)->__val, operand, order)
+#define atomic_fetch_or_explicit(object, operand, order) \
+ __atomic_fetch_or(&(object)->__val, operand, order)
+#define atomic_fetch_sub_explicit(object, operand, order) \
+ __atomic_fetch_sub(&(object)->__val, operand, order)
+#define atomic_fetch_xor_explicit(object, operand, order) \
+ __atomic_fetch_xor(&(object)->__val, operand, order)
+#define atomic_load_explicit(object, order) \
+ __atomic_load_n(&(object)->__val, order)
+#define atomic_store_explicit(object, desired, order) \
+ __atomic_store_n(&(object)->__val, desired, order)
+#else
+#define __atomic_apply_stride(object, operand) \
+ (((__typeof__((object)->__val))0) + (operand))
+#define atomic_compare_exchange_strong_explicit(object, expected, \
+ desired, success, failure) __extension__ ({ \
+ __typeof__(expected) __ep = (expected); \
+ __typeof__(*__ep) __e = *__ep; \
+ (void)(success); (void)(failure); \
+ (bool)((*__ep = __sync_val_compare_and_swap(&(object)->__val, \
+ __e, desired)) == __e); \
+})
+#define atomic_compare_exchange_weak_explicit(object, expected, \
+ desired, success, failure) \
+ atomic_compare_exchange_strong_explicit(object, expected, \
+ desired, success, failure)
+#ifdef __HAS_BUILTIN_SYNC_SWAP
+/* Clang provides a full-barrier atomic exchange - use it if available. */
+#define atomic_exchange_explicit(object, desired, order) \
+ ((void)(order), __sync_swap(&(object)->__val, desired))
+#else
+/*
+ * __sync_lock_test_and_set() is only an acquire barrier in theory (although in
+ * practice it is usually a full barrier) so we need an explicit barrier before
+ * it.
+ */
+#define atomic_exchange_explicit(object, desired, order) \
+__extension__ ({ \
+ __typeof__(object) __o = (object); \
+ __typeof__(desired) __d = (desired); \
+ (void)(order); \
+ __sync_synchronize(); \
+ __sync_lock_test_and_set(&(__o)->__val, __d); \
+})
+#endif
+#define atomic_fetch_add_explicit(object, operand, order) \
+ ((void)(order), __sync_fetch_and_add(&(object)->__val, \
+ __atomic_apply_stride(object, operand)))
+#define atomic_fetch_and_explicit(object, operand, order) \
+ ((void)(order), __sync_fetch_and_and(&(object)->__val, operand))
+#define atomic_fetch_or_explicit(object, operand, order) \
+ ((void)(order), __sync_fetch_and_or(&(object)->__val, operand))
+#define atomic_fetch_sub_explicit(object, operand, order) \
+ ((void)(order), __sync_fetch_and_sub(&(object)->__val, \
+ __atomic_apply_stride(object, operand)))
+#define atomic_fetch_xor_explicit(object, operand, order) \
+ ((void)(order), __sync_fetch_and_xor(&(object)->__val, operand))
+#define atomic_load_explicit(object, order) \
+ ((void)(order), __sync_fetch_and_add(&(object)->__val, 0))
+#define atomic_store_explicit(object, desired, order) \
+ ((void)atomic_exchange_explicit(object, desired, order))
+#endif
/*
* Convenience functions.
+ *
+ * Don't provide these in kernel space. In kernel space, we should be
+ * disciplined enough to always provide explicit barriers.
*/
+#ifndef _KERNEL
#define atomic_compare_exchange_strong(object, expected, desired) \
atomic_compare_exchange_strong_explicit(object, expected, \
desired, memory_order_seq_cst, memory_order_seq_cst)
@@ -352,6 +495,7 @@
atomic_load_explicit(object, memory_order_seq_cst)
#define atomic_store(object, desired) \
atomic_store_explicit(object, desired, memory_order_seq_cst)
+#endif /* !_KERNEL */
/*
* 7.17.8 Atomic flag type and operations.
@@ -366,21 +510,36 @@
#define ATOMIC_FLAG_INIT { ATOMIC_VAR_INIT(false) }
-static __inline bool atomic_flag_test_and_set_explicit(volatile atomic_flag *__object, memory_order __order) {
+static __inline bool
+atomic_flag_test_and_set_explicit(volatile atomic_flag *__object,
+ memory_order __order)
+{
return (atomic_exchange_explicit(&__object->__flag, 1, __order));
}
-static __inline void atomic_flag_clear_explicit(volatile atomic_flag *__object, memory_order __order) {
+static __inline void
+atomic_flag_clear_explicit(volatile atomic_flag *__object, memory_order __order)
+{
+
atomic_store_explicit(&__object->__flag, 0, __order);
}
-static __inline bool atomic_flag_test_and_set(volatile atomic_flag *__object) {
- return (atomic_flag_test_and_set_explicit(__object, memory_order_seq_cst));
+#ifndef _KERNEL
+static __inline bool
+atomic_flag_test_and_set(volatile atomic_flag *__object)
+{
+
+ return (atomic_flag_test_and_set_explicit(__object,
+ memory_order_seq_cst));
}
-static __inline void atomic_flag_clear(volatile atomic_flag *__object) {
+static __inline void
+atomic_flag_clear(volatile atomic_flag *__object)
+{
+
atomic_flag_clear_explicit(__object, memory_order_seq_cst);
}
+#endif /* !_KERNEL */
#endif /* <atomic> unavailable */
diff -u -r ./include.orig/string.h ./include/string.h
--- ./include.orig/string.h 2020-02-01 20:58:17.570298128 +0100
+++ ./include/string.h 2020-02-01 21:07:32.922341533 +0100
@@ -188,7 +188,7 @@
#endif
/* Const-correct overloads. Placed after FORTIFY so we call those functions, if possible. */
-#if defined(__cplusplus)
+#if defined(__cplusplus) && defined(__clang__)
/*
* Use two enable_ifs so these overloads don't conflict with + are preferred over libcxx's. This can
* be reduced to 1 after libcxx recognizes that we have const-correct overloads.
diff -u -r ./include.orig/sys/cdefs.h ./include/sys/cdefs.h
--- ./include.orig/sys/cdefs.h 2020-02-01 20:58:17.572298128 +0100
+++ ./include/sys/cdefs.h 2020-02-01 21:20:06.887400461 +0100
@@ -46,6 +46,18 @@
#define __END_DECLS
#endif
+/* GCC keyword fixes */
+#ifndef __has_builtin
+# define __has_builtin(x) 0
+#endif
+#ifndef __has_feature
+# define __has_feature(x) 0
+#endif
+#ifndef __clang__
+# define _Nullable
+# define _Nonnull
+#endif
+
#define __strong_alias(alias, sym) \
__asm__(".global " #alias "\n" \
#alias " = " #sym);
@@ -126,12 +138,25 @@
#define __wur __attribute__((__warn_unused_result__))
-#define __errorattr(msg) __attribute__((unavailable(msg)))
-#define __warnattr(msg) __attribute__((deprecated(msg)))
-#define __warnattr_real(msg) __attribute__((deprecated(msg)))
-#define __enable_if(cond, msg) __attribute__((enable_if(cond, msg)))
-#define __clang_error_if(cond, msg) __attribute__((diagnose_if(cond, msg, "error")))
-#define __clang_warning_if(cond, msg) __attribute__((diagnose_if(cond, msg, "warning")))
+#ifdef __clang__
+# define __errorattr(msg) __attribute__((unavailable(msg)))
+# define __warnattr(msg) __attribute__((deprecated(msg)))
+# define __warnattr_real(msg) __attribute__((deprecated(msg)))
+# define __enable_if(cond, msg) __attribute__((enable_if(cond, msg)))
+# define __clang_error_if(cond, msg) __attribute__((diagnose_if(cond, msg, "error")))
+# define __clang_warning_if(cond, msg) __attribute__((diagnose_if(cond, msg, "warning")))
+#else
+# define __errorattr(msg) __attribute__((__error__(msg)))
+# define __warnattr(msg) __attribute__((__warning__(msg)))
+# define __warnattr_real __warnattr
+/* enable_if doesn't exist on other compilers; give an error if it's used. */
+/* diagnose_if doesn't exist either, but it's often tagged on non-clang-specific functions */
+# define __clang_error_if(cond, msg)
+# define __clang_warning_if(cond, msg)
+
+/* errordecls really don't work as well in clang as they do in GCC. */
+# define __errordecl(name, msg) extern void name(void) __errorattr(msg)
+#endif
#if defined(ANDROID_STRICT)
/*
@@ -232,13 +257,17 @@
#define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1)
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
+# if defined(__clang__)
/*
* FORTIFY's _chk functions effectively disable ASAN's stdlib interceptors.
* Additionally, the static analyzer/clang-tidy try to pattern match some
* standard library functions, and FORTIFY sometimes interferes with this. So,
* we turn FORTIFY off in both cases.
*/
-# if !__has_feature(address_sanitizer) && !defined(__clang_analyzer__)
+# if !__has_feature(address_sanitizer) && !defined(__clang_analyzer__)
+# define __BIONIC_FORTIFY 1
+# endif
+# elif defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
# define __BIONIC_FORTIFY 1
# endif
#endif
@@ -260,27 +289,40 @@
#if defined(__BIONIC_FORTIFY)
# define __bos0(s) __bosn((s), 0)
-# define __pass_object_size_n(n) __attribute__((pass_object_size(n)))
+# if defined(__clang__)
+# define __pass_object_size_n(n) __attribute__((pass_object_size(n)))
/*
* FORTIFY'ed functions all have either enable_if or pass_object_size, which
* makes taking their address impossible. Saying (&read)(foo, bar, baz); will
* therefore call the unFORTIFYed version of read.
*/
-# define __call_bypassing_fortify(fn) (&fn)
+# define __call_bypassing_fortify(fn) (&fn)
/*
* Because clang-FORTIFY uses overloads, we can't mark functions as `extern
* inline` without making them available externally.
*/
-# define __BIONIC_FORTIFY_INLINE static __inline__ __always_inline
+# define __BIONIC_FORTIFY_INLINE static __inline__ __always_inline
/*
* We should use __BIONIC_FORTIFY_VARIADIC instead of __BIONIC_FORTIFY_INLINE
* for variadic functions because compilers cannot inline them.
* The __always_inline attribute is useless, misleading, and could trigger
* clang compiler bug to incorrectly inline variadic functions.
*/
-# define __BIONIC_FORTIFY_VARIADIC static __inline__
+# define __BIONIC_FORTIFY_VARIADIC static __inline__
/* Error functions don't have bodies, so they can just be static. */
-# define __BIONIC_ERROR_FUNCTION_VISIBILITY static __attribute__((unused))
+# define __BIONIC_ERROR_FUNCTION_VISIBILITY static __attribute__((unused))
+# else
+/*
+ * Where they can, GCC and clang-style FORTIFY share implementations.
+ * So, make these nops in GCC.
+ */
+# define __pass_object_size_n(n)
+# define __call_bypassing_fortify(fn) (fn)
+/* __BIONIC_FORTIFY_NONSTATIC_INLINE is pointless in GCC's FORTIFY */
+# define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
+/* __always_inline is probably okay and ignored by gcc in __BIONIC_FORTIFY_VARIADIC */
+# define __BIONIC_FORTIFY_VARIADIC __BIONIC_FORTIFY_INLINE
+# endif
#else
/* Further increase sharing for some inline functions */
# define __pass_object_size_n(n)
@@ -292,7 +334,11 @@
# define __BIONIC_INCLUDE_FORTIFY_HEADERS 1
#endif
-#define __overloadable __attribute__((overloadable))
+#if defined(__clang__)
+# define __overloadable __attribute__((overloadable))
+#else
+# define __overloadable
+#endif
/* Used to tag non-static symbols that are private and never exposed by the shared library. */
#define __LIBC_HIDDEN__ __attribute__((visibility("hidden")))
@@ -325,6 +371,7 @@
}
#endif
+#if defined(__clang__)
/*
* Used when we need to check for overflow when multiplying x and y. This
* should only be used where __size_mul_overflow can not work, because it makes
@@ -333,6 +380,7 @@
* __size_mul_overflow.
*/
#define __unsafe_check_mul_overflow(x, y) ((__SIZE_TYPE__)-1 / (x) < (y))
+#endif
#include <android/versioning.h>
#include <android/api-level.h>
diff -u -r ./include.orig/sys/mman.h ./include/sys/mman.h
--- ./include.orig/sys/mman.h 2020-02-01 20:58:17.573298128 +0100
+++ ./include/sys/mman.h 2020-02-01 21:07:32.926341533 +0100
@@ -56,7 +56,14 @@
* preserve the old behavior for GCC and emit a useful diagnostic.
*/
#if defined(__USE_FILE_OFFSET64)
-void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset) __RENAME(mmap64);
+void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset)
+# if !defined(__clang__) && __ANDROID_API__ < __ANDROID_API_L__
+ __attribute__((error("mmap is not available with _FILE_OFFSET_BITS=64 when using GCC until "
+ "android-21. Either raise your minSdkVersion, disable "
+ "_FILE_OFFSET_BITS=64, or switch to Clang.")));
+# else
+ __RENAME(mmap64);
+# endif
#else
void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset);
#endif
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