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-rw-r--r--lib/libc/stdio/vfscanf.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/stdio/vfscanf.c b/lib/libc/stdio/vfscanf.c
index 6aebd60..d9d3e1c 100644
--- a/lib/libc/stdio/vfscanf.c
+++ b/lib/libc/stdio/vfscanf.c
@@ -464,9 +464,11 @@ literal:
if (nconv != (size_t)-2) {
if (wctob(*wcp) != EOF &&
!ccltab[wctob(*wcp)]) {
- while (--n > 0)
+ while (n != 0) {
+ n--;
__ungetc(buf[n],
fp);
+ }
break;
}
nread += n;
@@ -562,9 +564,11 @@ literal:
*wcp = L'\0';
if (nconv != (size_t)-2) {
if (iswspace(*wcp)) {
- while (--n > 0)
+ while (n != 0) {
+ n--;
__ungetc(buf[n],
fp);
+ }
break;
}
nread += n;
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