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- configure.ac: In _Noreturn check, include <stdlib.h> for exit
- Otherwise, an implicit functiona declaration is used, causing
- a C99 compatibility issue.
- Submitted upstream:
- <https://lore.kernel.org/linux-modules/877cyq6kh9.fsf@oldenburg.str.redhat.com/>
- diff --git a/configure b/configure
- index d053310a8b4a313a..ec1f12d02428f848 100755
- --- a/configure
- +++ b/configure
- @@ -14021,7 +14021,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
- printf %s "checking whether _Noreturn is supported... " >&6; }
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
- /* end confdefs.h. */
- -_Noreturn int foo(void) { exit(0); }
- +#include <stdlib.h>
- + _Noreturn int foo(void) { exit(0); }
- _ACEOF
- if ac_fn_c_try_compile "$LINENO"
- then :
- diff --git a/configure.ac b/configure.ac
- index 6989e9360da23721..12e0518533201ccf 100644
- --- a/configure.ac
- +++ b/configure.ac
- @@ -68,7 +68,8 @@ AC_COMPILE_IFELSE(
-
- AC_MSG_CHECKING([whether _Noreturn is supported])
- AC_COMPILE_IFELSE(
- - [AC_LANG_SOURCE([[_Noreturn int foo(void) { exit(0); }]])],
- + [AC_LANG_SOURCE([[#include <stdlib.h>
- + _Noreturn int foo(void) { exit(0); }]])],
- [AC_DEFINE([HAVE_NORETURN], [1], [Define if _Noreturn is available])
- AC_MSG_RESULT([yes])],
- [AC_MSG_RESULT([no])])
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