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the bug of sscanf exception output in arm64 platform

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Signed-off-by: fengxuesong <fengxuesong@xiaomi.com>
This commit is contained in:
fengxuesong 2023-11-13 20:07:53 +08:00 committed by Xiang Xiao
parent b7b0a17682
commit bb14e45ec9
1 changed files with 31 additions and 0 deletions
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31
libs/libc/stdio/lib_libvscanf.c
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@ -315,6 +315,37 @@ int lib_vscanf(FAR struct lib_instream_s *stream, FAR int *lastc,
fmt++;
}
}
else if (fmt_char(fmt) == 'z')
{
switch (sizeof(size_t))
{
/* The only known cases that the default will be hit are
* (1) the eZ80 which has sizeof(size_t) = 3 which is the
* same as the sizeof(int). And (2) if
* CONFIG_HAVE_LONG_LONG
* is not enabled and sizeof(size_t) is equal to
* sizeof(unsigned long long). This latter case is an
* error.
*/
default:
continue; /* Treat as integer with no size qualifier. */
case sizeof(unsigned short):
modifier = H_MOD;
break;
case sizeof(unsigned long):
modifier = L_MOD;
break;
#if defined(CONFIG_HAVE_LONG_LONG) && ULLONG_MAX != ULONG_MAX
case sizeof(unsigned long long):
modifier = LL_MOD;
break;
#endif
}
}
else if (fmt_char(fmt) == 'j')
{
/* Same as long long if available. Otherwise, long. */