From 11022644f6dabf843bfe0ba422035b61fe4d4883 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dbaryshkov@gmail.com>
Date: Tue, 26 May 2020 13:06:03 +0300
Subject: configure.ac: add -fno-builtin-strcmp if valgrind is enabled

Recent GCC provides strcmp which makes Valgrind assume that it accesses
uninitialized data. Disable this optimization if Valgrind tests are
enabled.

Fixes #944

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 2aca4b9fca..f4c2e04bde 100644
--- a/configure.ac
+++ b/configure.ac
@@ -513,6 +513,10 @@ if test "$gl_gcc_warnings" = yes; then
   gl_WARN_ADD([-fdiagnostics-show-option])
 fi
 
+if test "$gl_cv_opt_valgrind_tests" != no; then
+  gl_WARN_ADD([-fno-builtin-strcmp])
+fi
+
 AC_SUBST([WERROR_CFLAGS])
 AC_SUBST([WSTACK_CFLAGS])
 AC_SUBST([WARN_CFLAGS])
-- 
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