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See https://bugs.gentoo.org/show_bug.cgi?id=620952
From 54b5a09f00c027da280361b30d32a4ff309ba3ab Mon Sep 17 00:00:00 2001
From: Poul-Henning Kamp <phk@FreeBSD.org>
Date: Tue, 28 Mar 2017 18:44:12 +0000
Subject: [PATCH] Try to confuse GCC to not doing FP brain-damage.
Fixes #1875 (maybe)
---
bin/varnishd/mgt/mgt_param_tweak.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/bin/varnishd/mgt/mgt_param_tweak.c b/bin/varnishd/mgt/mgt_param_tweak.c
index 12a7a52ef..b26581e2e 100644
--- a/bin/varnishd/mgt/mgt_param_tweak.c
+++ b/bin/varnishd/mgt/mgt_param_tweak.c
@@ -52,7 +52,7 @@ static int
tweak_generic_double(struct vsb *vsb, volatile double *dest,
const char *arg, const char *min, const char *max, const char *fmt)
{
- double u, minv = 0, maxv = 0;
+ volatile double u, minv = 0, maxv = 0;
if (arg != NULL) {
if (min != NULL) {
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