https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86053
--- Comment #2 from olivier at wuillemin dot fr ---
Resolved ? I find your answer a little bit short.
Concerning the nonnull attribute, in glibc manual i didn't find any requirement
concerning pointer arguments neither in glibc doc :
size_t fwrite(const void *data, size_t size, size_t count, FILE *stream)
Preliminary: | MT-Safe | AS-Unsafe corrupt | AC-Unsafe lock corrupt | See
Section 1.2.2.1 [POSIX Safety Concepts], page 2.
This function writes up to count objects of size size from the array
data, to the stream stream. The return value is normally count, if the call
succeeds. Any other value indicates some sort of error, such as running out of
space.
Neither in glibc's stdio.h source :
/* Write chunks of generic data to STREAM.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern size_t fwrite (const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __s);
For information VS studio indicates that function generate a runtime parameter
error in case of null pointer.
And if non null pointers are mandatorty for fwrite why they are not mandatory
for fread ?
Also, this doesn't explain why local declaration of a function is overloaded
with built-in declaration.
