Use return instead of exit() in configure

Using exit() requires stdlib.h, which is not included.  Use return
instead.  Also add return type for main().

Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Reviewed-by: Thomas Munro <thomas.munro@enterprisedb.com>

Backpatched because Apple macOS 10.16/11 (Big Sur) compiler makes
calling undeclared functions an error, so these configure tests would
fail.

Reported-by: Thomas Gilligan <thomas.gilligan@icloud.com>
Reported-by: Jesse Zhang <sbjesse@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/09A4B554-82B1-4536-B191-2461342EE0BB%40icloud.com
This commit is contained in:
Peter Eisentraut 2020-09-08 10:09:43 +02:00
parent 2939f613fa
commit 27acbd51e6
3 changed files with 15 additions and 5 deletions

View File

@ -71,8 +71,10 @@ int does_int64_work()
return 0;
return 1;
}
int
main() {
exit(! does_int64_work());
return (! does_int64_work());
}])],
[Ac_cachevar=yes],
[Ac_cachevar=no],

View File

@ -204,8 +204,10 @@ int does_int64_snprintf_work()
return 0; /* either multiply or snprintf is busted */
return 1;
}
int
main() {
exit(! does_int64_snprintf_work());
return (! does_int64_snprintf_work());
}]])],
[pgac_cv_snprintf_long_long_int_modifier=$pgac_modifier; break],
[],

12
configure vendored
View File

@ -13853,8 +13853,10 @@ int does_int64_work()
return 0;
return 1;
}
int
main() {
exit(! does_int64_work());
return (! does_int64_work());
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
@ -13935,8 +13937,10 @@ int does_int64_work()
return 0;
return 1;
}
int
main() {
exit(! does_int64_work());
return (! does_int64_work());
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
@ -14011,8 +14015,10 @@ int does_int64_snprintf_work()
return 0; /* either multiply or snprintf is busted */
return 1;
}
int
main() {
exit(! does_int64_snprintf_work());
return (! does_int64_snprintf_work());
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :