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fortify: Fix spurious warning with realpath

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The length and object size arguments were swapped around for realpath.
Also add a smoke test so that any changes in this area get caught in
future.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Siddhesh Poyarekar
2021-12-17 18:35:44 +05:30
parent b99b0f93ee
commit 2bbd07c715
3 changed files with 40 additions and 2 deletions
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2
stdlib/bits/stdlib.h
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@@ -42,7 +42,7 @@ __NTH (realpath (const char *__restrict __name, char *__restrict __resolved))
return __realpath_alias (__name, __resolved);
#if defined _LIBC_LIMITS_H_ && defined PATH_MAX
if (__glibc_unsafe_len (sz, sizeof (char), PATH_MAX))
if (__glibc_unsafe_len (PATH_MAX, sizeof (char), sz))
return __realpath_chk_warn (__name, __resolved, sz);
#endif
return __realpath_chk (__name, __resolved, sz);