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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2020-12-13 22:01:59 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-12-13 22:01:59 (GMT) |
| commit | 9feda9f871498463fe502d63204cf9cd6c1f4706 (patch) | |
| tree | ec4f28ff778858749690db7ff8c9114112dd4069 /configure.ac | |
| parent | 150b9bf3e9bddb825c60465194a4b2b51c32ab67 (diff) | |
| download | cpython-9feda9f871498463fe502d63204cf9cd6c1f4706.zip cpython-9feda9f871498463fe502d63204cf9cd6c1f4706.tar.gz cpython-9feda9f871498463fe502d63204cf9cd6c1f4706.tar.bz2 | |
bpo-42598: Fix implicit function declarations in configure (GH-23690) (GH-23757)
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 674fa0a740151e0416c9383f127b16014e805990)
Co-authored-by: Joshua Root <jmr@macports.org>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index 6c8fd5a..c93ba0e 100644 --- a/configure.ac +++ b/configure.ac @@ -3210,10 +3210,10 @@ if test "$posix_threads" = "yes"; then main() { pthread_attr_t attr; pthread_t id; - if (pthread_attr_init(&attr)) exit(-1); - if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) exit(-1); - if (pthread_create(&id, &attr, foo, NULL)) exit(-1); - exit(0); + if (pthread_attr_init(&attr)) return (-1); + if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1); + if (pthread_create(&id, &attr, foo, NULL)) return (-1); + return (0); }]])], [ac_cv_pthread_system_supported=yes], [ac_cv_pthread_system_supported=no], @@ -4616,7 +4616,7 @@ then int main() { /* 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], @@ -4709,7 +4709,7 @@ AC_CACHE_VAL(ac_cv_rshift_extends_sign, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main() { - exit(((-1)>>3 == -1) ? 0 : 1); + return (((-1)>>3 == -1) ? 0 : 1); } ]])], [ac_cv_rshift_extends_sign=yes], @@ -4856,6 +4856,7 @@ AC_MSG_CHECKING(for broken poll()) AC_CACHE_VAL(ac_cv_broken_poll, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <poll.h> +#include <unistd.h> int main() { |