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| author | Martin Sebor <msebor@redhat.com> | 2021-05-06 10:56:25 -0600 |
|---|---|---|
| committer | Martin Sebor <msebor@redhat.com> | 2021-05-06 11:01:05 -0600 |
| commit | 26492c0a14966c32c43cd6ca1d0dca5e62c6cfef (patch) | |
| tree | 1d2aceda8438c17113e02f86f2c8c31d58ac7f79 /pwd | |
| parent | 3f0808ef4c872afeade0e323c024ac59ec90fc2b (diff) | |
| download | glibc-26492c0a14966c32c43cd6ca1d0dca5e62c6cfef.tar glibc-26492c0a14966c32c43cd6ca1d0dca5e62c6cfef.tar.gz glibc-26492c0a14966c32c43cd6ca1d0dca5e62c6cfef.tar.bz2 glibc-26492c0a14966c32c43cd6ca1d0dca5e62c6cfef.zip | |
Annotate additional APIs with GCC attribute access.
This change continues the improvements to compile-time out of bounds
checking by decorating more APIs with either attribute access, or by
explicitly providing the array bound in APIs such as tmpnam() that
expect arrays of some minimum size as arguments. (The latter feature
is new in GCC 11.)
The only effects of the attribute and/or the array bound is to check
and diagnose calls to the functions that fail to provide a sufficient
number of elements, and the definitions of the functions that access
elements outside the specified bounds. (There is no interplay with
_FORTIFY_SOURCE here yet.)
Tested with GCC 7 through 11 on x86_64-linux.
Diffstat (limited to 'pwd')
| -rw-r--r-- | pwd/pwd.h | 12 |
1 files changed, 8 insertions, 4 deletions
@@ -139,20 +139,23 @@ extern struct passwd *getpwnam (const char *__name) __nonnull ((1)); extern int getpwent_r (struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) - __nonnull ((1, 2, 4)); + __nonnull ((1, 2, 4)) + __attr_access ((__write_only__, 2, 3)); # endif extern int getpwuid_r (__uid_t __uid, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) - __nonnull ((2, 3, 5)); + __nonnull ((2, 3, 5)) + __attr_access ((__write_only__, 3, 4)); extern int getpwnam_r (const char *__restrict __name, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) - __nonnull ((1, 2, 3, 5)); + __nonnull ((1, 2, 3, 5)) + __attr_access ((__write_only__, 3, 4)); # ifdef __USE_MISC @@ -167,7 +170,8 @@ extern int fgetpwent_r (FILE *__restrict __stream, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) - __nonnull ((1, 2, 3, 5)); + __nonnull ((1, 2, 3, 5)) + __attr_access ((__write_only__, 3, 4)); # endif #endif /* POSIX or reentrant */ |