Bug#674412: tcc: undefined symbol '__builtin_expect' on pthread_cleanup_push() call

[Matteo Cypriani]

Package: tcc
Version: 0.9.26~git20120104.83d57c0-5
Severity: normal

Hi,

When using pthread_cleanup_push() from a threaded function, tcc won't
compile. Please see the attached example file thread.c. Here is how it
compiles with gcc and tcc:

$ gcc -Wall -Wextra thread.c -pthread
thread.c: In function ‘clean_something’:
thread.c:3:28: warning: unused parameter ‘NULL_value’ [-Wunused-parameter]

$ tcc -Wall -Wextra thread.c -pthread
thread.c:10: warning: implicit declaration of function '__builtin_expect'
tcc: error: undefined symbol '__builtin_expect'

Cheers,
  Matteo

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (900, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages tcc depends on:
ii  dpkg          1.16.3
ii  install-info  4.13a.dfsg.1-10
ii  libc6         2.13-32

Versions of packages tcc recommends:
ii  libc6-dev [libc-dev]  2.13-32

tcc suggests no packages.

-- no debconf information

#include <pthread.h>

void clean_something(void* NULL_value)
{
	// some code
}

void* thread_func(void* NULL_value)
{
	pthread_cleanup_push(&clean_something, NULL) ;
	// some code
  pthread_cleanup_pop(1) ;
	pthread_exit(NULL_value) ;
}

int main(void)
{
	pthread_t mythread ;
	pthread_create(&mythread, NULL, &thread_func, NULL) ;
	return 0 ;
}