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| author | Rich Felker <dalias@aerifal.cx> | 2012-04-17 19:37:31 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-04-17 19:37:31 -0400 |
| commit | 00722515729bb6943dc84a8c4aa9ccd715e48e74 (patch) | |
| tree | d3576b82f86a08569f220ccf2a6141790d4e7d88 | |
| parent | e0d9f780d171326a12bf9daf2af1e2f0c51c89f6 (diff) | |
| download | musl-00722515729bb6943dc84a8c4aa9ccd715e48e74.tar.gz | |
fix wide scanf to respect field width for strings
| -rw-r--r-- | src/stdio/vfwscanf.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/stdio/vfwscanf.c b/src/stdio/vfwscanf.c index 4426a129..92b7fa40 100644 --- a/src/stdio/vfwscanf.c +++ b/src/stdio/vfwscanf.c @@ -83,7 +83,7 @@ static int in_set(const wchar_t *set, int c) #undef ungetwc #define ungetwc(c,f) \ - ((f)->rend && (c)<128 ? *--(f)->rpos : ungetwc((c),(f))) + ((f)->rend && (c)<128U ? *--(f)->rpos : ungetwc((c),(f))) #endif int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) @@ -215,19 +215,22 @@ int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap) case 's': s = dest; - while (!iswspace(c=getwc(f)) && c!=EOF) { + 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--; } + if (width) ungetwc(c, f); if (s) *s = 0; break; case 'S': wcs = dest; - while (!iswspace(c=getwc(f)) && c!=EOF) - pos++, *wcs++ = c; + while (width && !iswspace(c=getwc(f)) && c!=EOF) + width--, pos++, *wcs++ = c; + if (width) ungetwc(c, f); if (wcs) *wcs = 0; break; |