Commit Graph

8 Commits

Author SHA1 Message Date
wangjianyu3
02f1503f9f libc/stdlib: If there were no digits at all, strtoul() stores the original value of nptr in *endptr (and returns 0).
Reference: STRTOUL(3)

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
2024-09-15 10:11:42 +08:00
Sunny
2a5f48c3fd libs/libc/stdlib: fix strtoul,strtoull bugs when value outside range
Prototype:
  unsigned long strtoul(FAR const char *nptr, FAR char **endptr, int base);
  unsigned long long strtoull(FAR const char *nptr,  FAR char **endptr, int base);

If endptr is not NULL, strtoul()/strtoull() should store the address of the first
invalid character in *endptr. And if the correct value is outside the range of
representable values, {ULONG_MAX} or {ULLONG_MAX} shall be returned and errno set
to [ERANGE].

With such code:
  strtoul("34592348345343453453455645765736575865767", &endptr, 10);

It indeed returns ULONG_MAX and sets errno to ERANGE. But after strtoul
return, endptr points to "3455645765736575865767", not NULL.

Signed-off-by: Sunny <zxcvbnm37425@gmail.com>
2023-07-10 19:07:27 +03:00
Gustavo Henrique Nihei
330eff36d7 sourcefiles: Fix relative path in file header 2021-03-09 23:18:28 +08:00
Alin Jerpelea
b5d4a01821 libs: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-03 18:52:53 -08:00
Peter Bee
1f5786f5ea libc/stdlib: Fix range check in strtoul(l)
The previous implementation of strtoul(l) is flawed. The range check
assumed that when overflow happens, the truncated value is smaller than
the original value. As a counter example, passing "10000000000" to
strtol will not trigger ERANGE, but return a truncated value. This patch
adds more accurate range checks.

Change-Id: I239e034e390b4974157ed6efa17110f2e74904cf
Signed-off-by: Peter Bee <bijunda1@xiaomi.com>
2020-11-12 06:01:33 -08:00
Gregory Nutt
b8c7e5fcc0 Minor fixes to some spacing. 2019-02-14 15:57:15 -06:00
Johannes
350295d009 Squashed commit of the following:
Author: Gregory Nutt <gnutt@nuttx.org>

    TODO:  Remove 'Missing fscanf()' bug
    Clean up remaining complaints for tools/nxstyle
    Apply tools/detab, rmcr, convert-comments, lowhex, and indent.sh to the new and highly modified files.

Author: Johannes <nivus.entwicklung@gmail.com>

    - Move vscanf logic to lib_sscanf.c  Switched to stream interface (tricky, because the old implementation used massive read ahead, which isn't suitable for streams, chars already read are gone).
    - Added scanf and fscanf
    - Added hh, h, and ll modifiers
    - Fixes for standard compliance in scanf
    - Fixes for standard compliance in strto... function family (don't consume single '-' or '+', allow sign in strotul(l))
2019-02-14 07:03:02 -06:00
Gregory Nutt
cf99fb40c9 This commit moves all of the libraries under a common directory called libs/. This most certainly break libcxx and uClibc++ for now.
Squashed commit of the following:

    libs/libxx:  Fix some confusing in naming.  If the directory is called libxx, then the library must be libxx.a (unless perhaps LIBCXX is selected).
    libs/:  Fix paths in moved library directories.
    libs:  Brute force move of libc, libnx, and libxx to libs.  Cannot yet build it in that configuration.
2018-05-29 13:21:26 -06:00