reassign 674412 libc6-dev thanks Le jeudi 24 mai 2012 14:47:39, vous avez écrit : > > $ tcc -Wall -Wextra thread.c -pthread > thread.c:10: warning: implicit declaration of function '__builtin_expect' > tcc: error: undefined symbol '__builtin_expect'
__builtin_expect is not currently supported by tcc. I asked upstream if they
were willing to ignore this keyword but they feel glibc, which is providing
the macro for pthread_cleanup_push, should not assume non gcc compilers to
accept __builtin_expect. Hence reassigning to glibc package.
For glibc maintainers:
In pthread.h, pthread_cleanup_push is defined around line 650 in the following
way when __GNUC__ is not defined (the case for tcc for example):
# define pthread_cleanup_push(routine, arg) \
do {
\
__pthread_unwind_buf_t __cancel_buf;
\
void (*__cancel_routine) (void *) = (routine);
\
void *__cancel_arg = (arg);
\
int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \
__cancel_buf.__cancel_jmp_buf, 0);
\
if (__builtin_expect (__not_first_call, 0)) \
{
\
__cancel_routine (__cancel_arg);
\
__pthread_unwind_next (&__cancel_buf);
\
/* NOTREACHED */
\
}
\
\
__pthread_register_cancel (&__cancel_buf);
\
do {
This makes use of __builtin_expect which should not be assume to exist.
Best regards.
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