fix failure of wide printf/scanf functions to set wide orientation

[oweals/musl.git] / src / stdio / vfwprintf.c

diff --git a/src/stdio/vfwprintf.c b/src/stdio/vfwprintf.c
index 3557678f455d0189a169e5589b52c143e2d0b5b5..c6400591a01ac7d6e257721eb0ed19b4f3a5a556 100644 (file)
--- a/src/stdio/vfwprintf.c
+++ b/src/stdio/vfwprintf.c
@@ -253,7 +253,6 @@ static int wprintf_core(FILE *f, const wchar_t *fmt, va_list *ap, union arg *nl_
                /* Check validity of argument type (nl/normal) */
                if (st==NOARG) {
                        if (argpos>=0) return -1;
-                       else if (!f) continue;
                } else {
                        if (argpos>=0) nl_type[argpos]=st, arg=nl_arg[argpos];
                        else if (f) pop_arg(&arg, st, ap);
@@ -287,8 +286,7 @@ static int wprintf_core(FILE *f, const wchar_t *fmt, va_list *ap, union arg *nl_
                case 'S':
                        a = arg.p;
                        z = wmemchr(a, 0, p);
-                       if (!z) z=a+p;
-                       else p=z-a;
+                       if (z) p=z-a;
                        if (w<p) w=p;
                        if (!(fl&LEFT_ADJ)) fprintf(f, "%.*s", w-p, "");
                        out(f, a, p);
@@ -349,10 +347,15 @@ int vfwprintf(FILE *restrict f, const wchar_t *restrict fmt, va_list ap)
        union arg nl_arg[NL_ARGMAX];
        int ret;
 
+       /* the copy allows passing va_list* even if va_list is an array */
        va_copy(ap2, ap);
-       if (wprintf_core(0, fmt, &ap2, nl_arg, nl_type) < 0) return -1;
+       if (wprintf_core(0, fmt, &ap2, nl_arg, nl_type) < 0) {
+               va_end(ap2);
+               return -1;
+       }
 
        FLOCK(f);
+       f->mode |= f->mode+1;
        ret = wprintf_core(f, fmt, &ap2, nl_arg, nl_type);
        FUNLOCK(f);
        va_end(ap2);