8265431: Add -fno-delete-null-pointer-checks to clang builds

mkartashev · erikj79 · commit 64ba2f0e8f38 · 2021-06-01T17:56:44.000Z
Reviewed-by: erikj
diff --git a/make/autoconf/flags-cflags.m4 b/make/autoconf/flags-cflags.m4
@@ -737,6 +737,15 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
     $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
 
     $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
+  elif test "x$TOOLCHAIN_TYPE" = xclang; then
+    NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
+    FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG],
+        PREFIX: $3,
+        IF_FALSE: [
+            NO_DELETE_NULL_POINTER_CHECKS_CFLAG=
+        ]
+    )
+    $1_TOOLCHAIN_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG}"
   fi
 
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft && test "x$ENABLE_REPRODUCIBLE_BUILD" = xtrue; then
