From 8448fd2813c4a8bdeff08c739129c877204341a7 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 4 Jul 2022 09:41:57 +0930
Subject: [PATCH 1/1] ccan/rune: compile without warnings on -O3.
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```
ccan/ccan/rune/rune.c: In function ‘rune_alt_single_int’:
ccan/ccan/rune/rune.c:257:5: error: ‘runeval_int’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  257 |  if (cond)
      |     ^
ccan/ccan/rune/rune.c:305:6: note: ‘runeval_int’ was declared here
  305 |  s64 runeval_int;
      |      ^~~~~~~~~~~
cc1: all warnings being treated as errors
make: *** [Makefile:919: ccan-rune-rune.o] Error 1
```

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 ccan/rune/rune.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ccan/rune/rune.c b/ccan/rune/rune.c
index 0ff7968b..84296c66 100644
--- a/ccan/rune/rune.c
+++ b/ccan/rune/rune.c
@@ -302,7 +302,7 @@ static const char *rune_alt_single(const tal_t *ctx,
 				   const s64 *fieldval_int)
 {
 	char strfield[STR_MAX_CHARS(s64) + 1];
-	s64 runeval_int;
+	s64 runeval_int = 0 /* gcc v9.4.0 gets upset with uninitiaized var at -O3 */;
 	const char *err;
 
 	/* Caller can't set both! */
-- 
2.39.2