X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstdio%2Fopen_memstream.c;h=c7330abedb26b61b69f204d0f2659cc975b159b1;hb=835f9f950e2f6059532bd9ab9857a856ed21a4fd;hp=7fc16204daad7551d83ecf0e83b3383230cc1e00;hpb=c88f36f55623124d09f48631974ca38aaec00057;p=musl

diff --git a/src/stdio/open_memstream.c b/src/stdio/open_memstream.c
index 7fc16204..c7330abe 100644
--- a/src/stdio/open_memstream.c
+++ b/src/stdio/open_memstream.c
@@ -1,4 +1,7 @@
 #include "stdio_impl.h"
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
 
 struct cookie {
 	char **bufp;
@@ -32,8 +35,8 @@ static size_t ms_write(FILE *f, const unsigned char *buf, size_t len)
 		f->wpos = f->wbase;
 		if (ms_write(f, f->wbase, len2) < len2) return 0;
 	}
-	if (len >= c->space - c->pos) {
-		len2 = 2*c->space+1 | c->space+len+1;
+	if (len + c->pos >= c->space) {
+		len2 = 2*c->space+1 | c->pos+len+1;
 		newbuf = realloc(c->buf, len2);
 		if (!newbuf) return 0;
 		*c->bufp = c->buf = newbuf;