From: Julien Ramseier <j.ramseier@gmail.com>
Date: Wed, 1 Jul 2020 13:12:14 +0000 (+0200)
Subject: vfscanf: fix possible invalid free due to uninitialized variable use
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=a62df9c9b7cad47e62b293abeddaf3fcdf09d8ae;p=musl

vfscanf: fix possible invalid free due to uninitialized variable use

vfscanf() may use the variable 'alloc' uninitialized when taking the
branch introduced by commit b287cd745c2243f8e5114331763a5a9813b5f6ee.
Spotted by clang.
---

diff --git a/src/stdio/vfscanf.c b/src/stdio/vfscanf.c
index b5ebc16e..b78a374d 100644
--- a/src/stdio/vfscanf.c
+++ b/src/stdio/vfscanf.c
@@ -57,7 +57,7 @@ int vfscanf(FILE *restrict f, const char *restrict fmt, va_list ap)
 {
 	int width;
 	int size;
-	int alloc;
+	int alloc = 0;
 	int base;
 	const unsigned char *p;
 	int c, t;