mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-26 18:29:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

bpo-42598: Fix implicit function declarations in configure (GH-23690) (GH-23756)

Browse source 
This is invalid in C99 and later and is an error with some compilers
(e.g. clang in Xcode 12), and can thus cause configure checks to
produce incorrect results.
(cherry picked from commit 674fa0a740)

Co-authored-by: Joshua Root <jmr@macports.org>
This commit is contained in:
Miss Islington (bot) 2020-12-13 14:01:00 -08:00 • committed by GitHub
parent be9e4402db
commit 3dcdbdeb48
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Misc/NEWS.d/next/Build/2020-12-13-14-43-10.bpo-42598.7ipr5H.rst Normal file
View file

@ -0,0 +1,2 @@
Fix implicit function declarations in configure which could have resulted in
incorrect configuration checks. Patch contributed by Joshua Root.

13
configure vendored
View file

@ -11072,10 +11072,10 @@ else
main() { main() {
pthread_attr_t attr; pthread_attr_t attr;
pthread_t id; pthread_t id;
if (pthread_attr_init(&attr)) exit(-1); if (pthread_attr_init(&attr)) return (-1);
if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) exit(-1); if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1);
if (pthread_create(&id, &attr, foo, NULL)) exit(-1); if (pthread_create(&id, &attr, foo, NULL)) return (-1);
exit(0); return (0);
} }
_ACEOF _ACEOF
if ac_fn_c_try_run "$LINENO"; then : if ac_fn_c_try_run "$LINENO"; then :
@ -15083,7 +15083,7 @@ else
int main() int main()
{ {
/* Success: exit code 0 */ /* Success: exit code 0 */
exit((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1); return ((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1);
} }
_ACEOF _ACEOF
@ -15464,7 +15464,7 @@ else
int main() int main()
{ {
exit(((-1)>>3 == -1) ? 0 : 1); return (((-1)>>3 == -1) ? 0 : 1);
} }
_ACEOF _ACEOF
@ -15934,6 +15934,7 @@ else
/* end confdefs.h. */ /* end confdefs.h. */
#include <poll.h> #include <poll.h>
#include <unistd.h>
int main() int main()
{ {

13
configure.ac
View file

@ -3313,10 +3313,10 @@ if test "$posix_threads" = "yes"; then
main() { main() {
pthread_attr_t attr; pthread_attr_t attr;
pthread_t id; pthread_t id;
if (pthread_attr_init(&attr)) exit(-1); if (pthread_attr_init(&attr)) return (-1);
if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) exit(-1); if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1);
if (pthread_create(&id, &attr, foo, NULL)) exit(-1); if (pthread_create(&id, &attr, foo, NULL)) return (-1);
exit(0); return (0);
}]])], }]])],
[ac_cv_pthread_system_supported=yes], [ac_cv_pthread_system_supported=yes],
[ac_cv_pthread_system_supported=no], [ac_cv_pthread_system_supported=no],
@ -4725,7 +4725,7 @@ then
int main() int main()
{ {
/* Success: exit code 0 */ /* Success: exit code 0 */
exit((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1); return ((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1);
} }
]])], ]])],
[ac_cv_wchar_t_signed=yes], [ac_cv_wchar_t_signed=yes],
@ -4847,7 +4847,7 @@ AC_CACHE_VAL(ac_cv_rshift_extends_sign, [
AC_RUN_IFELSE([AC_LANG_SOURCE([[ AC_RUN_IFELSE([AC_LANG_SOURCE([[
int main() int main()
{ {
exit(((-1)>>3 == -1) ? 0 : 1); return (((-1)>>3 == -1) ? 0 : 1);
} }
]])], ]])],
[ac_cv_rshift_extends_sign=yes], [ac_cv_rshift_extends_sign=yes],
@ -4994,6 +4994,7 @@ AC_MSG_CHECKING(for broken poll())
AC_CACHE_VAL(ac_cv_broken_poll, AC_CACHE_VAL(ac_cv_broken_poll,
AC_RUN_IFELSE([AC_LANG_SOURCE([[ AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <poll.h> #include <poll.h>
#include <unistd.h>
int main() int main()
{ {