From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 8 Jan 2026 08:10:38 +0000 (+0100)
Subject: mprintf: drop old sprintf fallback
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7de35515d90d364e851cdde712062b942d6bf36a;p=thirdparty%2Fcurl.git

mprintf: drop old sprintf fallback

1. No modern systems lack snprintf()

2. If there actually exist any such systems, they get to manage without
   floating point output.

Closes #20218
---

diff --git a/lib/mprintf.c b/lib/mprintf.c
index 50ede212a4..85aedf4992 100644
--- a/lib/mprintf.c
+++ b/lib/mprintf.c
@@ -712,7 +712,8 @@ static bool out_double(void *userp,
   work[BUFFSIZE - 1] = 0;
 #endif
 #else
-  (sprintf)(work, formatbuf, dnum);
+  /* float and double outputs do not work without snprintf support */
+  work[0] = 0;
 #endif
 #ifdef __clang__
 #pragma clang diagnostic pop