From bc944193381840386a00ec37a5c44908c8f16689 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Mon, 12 Aug 2019 02:33:31 -0700
Subject: Prevent memset from calling itself

With -ftree-loop-distribute-patterns, GCC detects that the body of memset
is equivalent to memset, and so turns it into a call to memset, causing
infinite recursion.

Closes #170.
---
 util/string.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'util')

diff --git a/util/string.c b/util/string.c
index 615c325..90d7127 100644
--- a/util/string.c
+++ b/util/string.c
@@ -4,6 +4,11 @@
 #include <stdint.h>
 #include <ctype.h>
 
+#ifdef __GNUC__
+// Don't let GCC pattern-match these functions' bodies into self-calls
+#pragma GCC optimize ("no-tree-loop-distribute-patterns")
+#endif
+
 void* memcpy(void* dest, const void* src, size_t len)
 {
   const char* s = src;
-- 
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