From aedc31e92511dfb64d862822734fffac1cb25ab0 Mon Sep 17 00:00:00 2001
From: Giacomo Tesio <giacomo@tesio.it>
Date: Fri, 19 May 2017 01:33:09 +0200
Subject: [PATCH] libstdio: fix uninitialized variables

---
 sys/src/lib/stdio/vfprintf.c | 2 ++
 sys/src/lib/stdio/vfscanf.c  | 6 +++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/sys/src/lib/stdio/vfprintf.c b/sys/src/lib/stdio/vfprintf.c
index 559bb43..f0b5456 100644
--- a/sys/src/lib/stdio/vfprintf.c
+++ b/sys/src/lib/stdio/vfprintf.c
@@ -467,6 +467,8 @@ ocvt_flt(FILE *f, va_list *args, int flags, int width, int precision,
 	char *eptr;
 	double d;
 
+	digits = nil;
+	eptr = nil;
 	echr = 'e';
 	fmt = afmt;
 	d = va_arg(*args, double);
diff --git a/sys/src/lib/stdio/vfscanf.c b/sys/src/lib/stdio/vfscanf.c
index 8866f5e..045d656 100644
--- a/sys/src/lib/stdio/vfscanf.c
+++ b/sys/src/lib/stdio/vfscanf.c
@@ -300,7 +300,7 @@ Done:
 static int icvt_s(FILE *f, va_list *args, int store, int width, int type){
 #pragma ref type
 	int c, nn;
-	register char *s;
+	register char *s = nil;
 	if(store) s=va_arg(*args, char *);
 	do
 		c=ngetc(f);
@@ -328,7 +328,7 @@ Done:
 static int icvt_c(FILE *f, va_list *args, int store, int width, int type){
 #pragma ref type
 	int c;
-	register char *s;
+	register char *s = nil;
 	if(store) s=va_arg(*args, char *);
 	if(width<0) width=1;
 	for(;;){
@@ -360,7 +360,7 @@ static int match(int c, const char *pat){
 static int icvt_sq(FILE *f, va_list *args, int store, int width, int type){
 #pragma ref type
 	int c, nn;
-	register char *s;
+	register char *s = nil;
 	register const char *pat;
 	pat=++fmtp;
 	if(*fmtp=='^') fmtp++;