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From 0f859fc99325bbb25d506b28565e4a7385ffe0e6 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 18 Dec 2014 17:41:34 -0500
Subject: [PATCH] don't suppress sign output for NANs in printf
formally, it seems a sign is only required when the '+' modifier
appears in the format specifier, in which case either '+' or '-' must
be present in the output. but the specification is written such that
an optional negative sign is part of the output format anyway, and the
simplest approach to fixing the problem is removing the code that was
suppressing the sign.
---
src/stdio/vfprintf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index d421817..2ecf769 100644
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c
@@ -225,7 +225,7 @@ static int fmt_fp(FILE *f, long double y, int w, int p, int fl, int t)
if (!isfinite(y)) {
char *s = (t&32)?"inf":"INF";
- if (y!=y) s=(t&32)?"nan":"NAN", pl=0;
+ if (y!=y) s=(t&32)?"nan":"NAN";
pad(f, ' ', w, 3+pl, fl&~ZERO_PAD);
out(f, prefix, pl);
out(f, s, 3);
--
2.3.3
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