build with -fstack-reuse=none

MarcoFalke · MarcoFalke · commit 5935f0126ef3 · 2019-05-16T10:08:58.000-04:00
Github-Pull: #15983 Rebased-From: faf38bc
diff --git a/configure.ac b/configure.ac
@@ -725,6 +725,10 @@ if test x$TARGET_OS != xwindows; then
   AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
 fi
 
+# All versions of gcc that we commonly use for building are subject to bug
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
+# -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
+AX_CHECK_COMPILE_FLAG([-fstack-reuse=none],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-reuse=none"])
 if test x$use_hardening != xno; then
   use_hardening=yes
   AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
