[Python-checkins] closes bpo-13497: Fix `broken nice` configure test. (GH-12041)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/2055ebb940a737b1375435209c37eae535f062f9
commit: 2055ebb940a737b1375435209c37eae535f062f9
branch: 3.7
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2019-02-25T21:59:14-08:00
summary:

closes bpo-13497: Fix `broken nice` configure test. (GH-12041)


Per POSIX, `nice(3)` requires `unistd.h` and `exit(3)` requires `stdlib.h`.

Fixing the test will prevent false positives with pedantic compilers like clang.
(cherry picked from commit 90c6facebd5666fec85f125ee2795b48b30319a4)

Co-authored-by: ngie-eign <1574099+ngie-eign at users.noreply.github.com>

files:
M configure.ac

diff --git a/configure.ac b/configure.ac
index 788c361ffeeb..ad0f4d42b4b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4890,6 +4890,8 @@ LIBS=$LIBS_no_readline
 AC_MSG_CHECKING(for broken nice())
 AC_CACHE_VAL(ac_cv_broken_nice, [
 AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <unistd.h>
 int main()
 {
 	int val1 = nice(1);