From 14dc9355bd71818cf01c1c690c1c91a0978ea9b8 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Wed, 12 Jun 2019 17:23:38 +0200
Subject: [PATCH] Issue 102: Fix ASAN build when using GCC.

GCC's address sanitizer sets the __SANITIZE_ADDRESS__ macro instead.
---
 jsstate.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/jsstate.c b/jsstate.c
index 10c25c5..75b7842 100644
--- a/jsstate.c
+++ b/jsstate.c
@@ -9,13 +9,14 @@
 
 static void *js_defaultalloc(void *actx, void *ptr, int size)
 {
-#if defined(__has_feature)
-#if __has_feature(address_sanitizer)
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
 	if (size == 0) {
 		free(ptr);
 		return NULL;
 	}
-#endif
 #endif
 	return realloc(ptr, (size_t)size);
 }