[Backport #20633] Fix the condition for atomic_signal_fence (#11166)
atomic_signal_fence
[Bug #20633] Fix the condition for atomic_signal_fence
AC_CHECK_DECLS defines HAVE_DECL_SYMBOL to 1 if declared, 0 otherwise, not undefined.
AC_CHECK_DECLS
HAVE_DECL_SYMBOL
Co-authored-by: kimuraw (Wataru Kimura) [email protected]
Added by
[Backport #20633] Fix the condition for
atomic_signal_fence(#11166)[Bug #20633] Fix the condition for
atomic_signal_fenceAC_CHECK_DECLSdefinesHAVE_DECL_SYMBOLto 1 if declared, 0otherwise, not undefined.
Co-authored-by: kimuraw (Wataru Kimura) [email protected]