diff options
| -rw-r--r-- | src/stdio/vfwscanf.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/stdio/vfwscanf.c b/src/stdio/vfwscanf.c index beb8e8fb..a52ba3a0 100644 --- a/src/stdio/vfwscanf.c +++ b/src/stdio/vfwscanf.c @@ -214,13 +214,14 @@ int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) break; case 's': + if (width < 1) width = -1; s = dest; while (width && !iswspace(c=getwc(f)) && c!=EOF) { int l = wctomb(s?s:tmp, c); if (l<0) goto input_fail; if (s) s+=l; pos++; - width--; + width-=(width>0); } if (width) ungetwc(c, f); if (s) *s = 0; @@ -228,8 +229,9 @@ int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) case 'S': wcs = dest; + if (width < 1) width = -1; while (width && !iswspace(c=getwc(f)) && c!=EOF) - width--, pos++, *wcs++ = c; + width-=(width>0), pos++, *wcs++ = c; if (width) ungetwc(c, f); if (wcs) *wcs = 0; break; @@ -243,6 +245,8 @@ int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) int gotmatch = 0; + if (width < 1) width = -1; + while (width) { if ((c=getwc(f))<0) break; if (in_set(p, c) == invert) @@ -255,7 +259,7 @@ int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) if (s) s+=l; } pos++; - width--; + width-=(width>0); gotmatch=1; } if (width) ungetwc(c, f); |