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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2021-07-28 16:58:17 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2021-07-28 17:45:14 +0530 |
| commit | b8e8bb324a376cd99bb61b6c21f63c395cae9b5d (patch) | |
| tree | 890c19c4c34237fbe40d0dac187189cd2e83626a /misc/sys | |
| parent | 4aedc25f55eda50010f2932fdb0a533db6f89f61 (diff) | |
| download | glibc-b8e8bb324a376cd99bb61b6c21f63c395cae9b5d.zip glibc-b8e8bb324a376cd99bb61b6c21f63c395cae9b5d.tar.gz glibc-b8e8bb324a376cd99bb61b6c21f63c395cae9b5d.tar.bz2 | |
xmalloc: Fix warnings with gcc analyzer
Tell the compiler that xmalloc family of allocators always return
non-NULL. xrealloc in locale/programs also always returns non-NULL,
but that conflicts with default realloc behaviour and that of xrealloc
in libsupport, so keep it as is for now and resolve the differences
later.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'misc/sys')
| -rw-r--r-- | misc/sys/cdefs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 30a621a..e490fc1 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -330,6 +330,16 @@ # define __nonnull(params) _GL_ATTRIBUTE_NONNULL (params) #endif +/* The returns_nonnull function attribute marks the return type of the function + as always being non-null. */ +#ifndef __returns_nonnull +# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__) +# define __returns_nonnull __attribute__ ((__returns_nonnull__)) +# else +# define __returns_nonnull +# endif +#endif + /* If fortification mode, we warn about unused results of certain function calls which can lead to problems. */ #if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__) |