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Merge "Explain why system(3)'s argument is marked _Nonnull." into main am: 19346eaaec

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Original change: https://android-review.googlesource.com/c/platform/bionic/+/2807093

Change-Id: If1b85926fcc5bfd4bd0bb0444e4669fc9b39a4d2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
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Treehugger Robot 2023-10-27 00:19:17 +00:00 committed by Automerger Merge Worker
commit 33e9fe330c
1 changed files with 16 additions and 0 deletions
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16
libc/include/stdlib.h
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@ -87,6 +87,22 @@ long atol(const char* _Nonnull __s) __attribute_pure__;
long long atoll(const char* _Nonnull __s) __attribute_pure__;
__wur char* _Nullable realpath(const char* _Nonnull __path, char* _Nullable __resolved);
/**
* [system(3)](http://man7.org/linux/man-pages/man3/system.3.html) executes
* the given command in a new shell process.
*
* On Android, the special case of `system(NULL)` always returns 1,
* as specified by POSIX. Passing `NULL` to determine whether or
* not a shell is available is not portable. Callers should just try
* the command they actually want to run, since there are many reasons
* why it might fail, both temporarily (for lack of resources, say)
* or permanently (for lack of permission, say).
*
* Returns -1 and sets errno if process creation fails; returns a
* [waitpid(2)](http://man7.org/linux/man-pages/man2/waitpid.2.html)
* status otherwise.
*/
int system(const char* _Nonnull __command);
void* _Nullable bsearch(const void* _Nonnull __key, const void* _Nullable __base, size_t __nmemb, size_t __size, int (* _Nonnull __comparator)(const void* _Nonnull __lhs, const void* _Nonnull __rhs));