From: Rich Felker <dalias@aerifal.cx>
Date: Tue, 17 Apr 2012 15:50:02 +0000 (-0400)
Subject: avoid null pointer dereference on %*p fields in scanf
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=03de77f5210addfd2ca2b35137152edfe2ab70be;ds=sidebyside

avoid null pointer dereference on %*p fields in scanf
---

diff --git a/src/stdio/vfscanf.c b/src/stdio/vfscanf.c
index 5c1e49b1..926d8a9d 100644
--- a/src/stdio/vfscanf.c
+++ b/src/stdio/vfscanf.c
@@ -284,7 +284,7 @@ int vfscanf(FILE *f, const char *fmt, va_list ap)
 		int_common:
 			x = __intscan(f, base, 0, ULLONG_MAX);
 			if (!shcnt(f)) goto match_fail;
-			if (t=='p') *(void **)dest = (void *)(uintptr_t)x;
+			if (t=='p' && dest) *(void **)dest = (void *)(uintptr_t)x;
 			else store_int(dest, size, x);
 			break;
 		case 'a': case 'A':