Add some regression tests for printf() with positional arguments.

The first test comes from OpenBSD, and the others are additions or
adaptations.

This is based on OpenBSD's
src/regress/lib/libc/sprintf/sprintf_test.c, v1.3.
I deliberately did not use v1.4 because it's bogus.

2 files changed, 133 insertions, 1 deletions

diff --git a/tools/regression/lib/libc/stdio/Makefile b/tools/regression/lib/libc/stdio/Makefile
index 35131e2..554281f5 100644
--- a/tools/regression/lib/libc/stdio/Makefile
+++ b/tools/regression/lib/libc/stdio/Makefile
@@ -1,6 +1,6 @@
 # $FreeBSD$
 
-TESTS=	test-perror test-printfloat test-scanfloat
+TESTS=	test-perror test-print-positional test-printfloat test-scanfloat
 CFLAGS+= -lm
 
 .PHONY: tests
diff --git a/tools/regression/lib/libc/stdio/test-print-positional.c b/tools/regression/lib/libc/stdio/test-print-positional.c
new file mode 100644
index 0000000..6eeb8f1
--- /dev/null
+++ b/tools/regression/lib/libc/stdio/test-print-positional.c
@@ -0,0 +1,132 @@
+/*      $OpenBSD: sprintf_test.c,v 1.3 2004/09/16 20:22:26 otto Exp $ */
+
+/*
+ * Copyright (c) 2003 Theo de Raadt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    - Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+const char correct[] =
+	"|xx 01 02 03 04\n"
+	"|xx 05 06 07 08\n"
+	"|xx 09 10 11 12\n"
+	"|xx 13 14 15 16\n"
+	"|xx 17 18 19 20\n"
+	"|xx 21 22 23 24\n"
+	"|xx 25 26 27 28\n"
+	"|xx 29 30 31 32\n"
+	"|xx 33 34 35 36\n"
+	"|xx 37 38 39 40\n"
+	"|xx 41 42 43 44\n"
+	"|xx 45 -1 1 -1 1\n";
+
+const char correct2[] =
+	"b bs BSD";
+
+int
+main(int argc, char *argv[])
+{
+	char buf[1024];
+	wchar_t wbuf1[1024], wbuf2[1024];
+	const char *temp;
+
+	printf("1..4\n");
+
+	/* Test positional arguments */
+	snprintf(buf, sizeof buf,
+	    "|xx %1$s %2$s %3$s %4$s\n"
+	    "|xx %5$s %6$s %7$s %8$s\n"
+	    "|xx %9$s %10$s %11$s %12$s\n"
+	    "|xx %13$s %14$s %15$s %16$s\n"
+	    "|xx %17$s %18$s %19$s %20$s\n"
+	    "|xx %21$s %22$s %23$s %24$s\n"
+	    "|xx %25$s %26$s %27$s %28$s\n"
+	    "|xx %29$s %30$s %31$s %32$s\n"
+	    "|xx %33$s %34$s %35$s %36$s\n"
+	    "|xx %37$s %38$s %39$s %40$s\n"
+	    "|xx %41$s %42$s %43$s %44$s\n"
+	    "|xx %45$d %46$ld %47$lld %48$d %49$lld\n",
+	    "01", "02", "03", "04", "05", "06",
+	    "07", "08", "09", "10", "11", "12",
+	    "13", "14", "15", "16", "17", "18",
+	    "19", "20", "21", "22", "23", "24",
+	    "25", "26", "27", "28", "29", "30",
+	    "31", "32", "33", "34", "35", "36",
+	    "37", "38", "39", "40", "41", "42",
+	    "43", "44", 45, -1L, 1LL, -1, 1LL
+	    );
+	printf("%sok 1 - print-positional normal\n",
+	       strcmp(buf, correct) == 0 ? "" : "not ");
+
+	swprintf(wbuf1, sizeof wbuf1,
+	    L"|xx %1$s %2$s %3$s %4$s\n"
+	    "|xx %5$s %6$s %7$s %8$s\n"
+	    "|xx %9$s %10$s %11$s %12$s\n"
+	    "|xx %13$s %14$s %15$s %16$s\n"
+	    "|xx %17$s %18$s %19$s %20$s\n"
+	    "|xx %21$s %22$s %23$s %24$s\n"
+	    "|xx %25$s %26$s %27$s %28$s\n"
+	    "|xx %29$s %30$s %31$s %32$s\n"
+	    "|xx %33$s %34$s %35$s %36$s\n"
+	    "|xx %37$s %38$s %39$s %40$s\n"
+	    "|xx %41$s %42$s %43$s %44$s\n"
+	    "|xx %45$d %46$ld %47$lld %48$d %49$lld\n",
+	    "01", "02", "03", "04", "05", "06",
+	    "07", "08", "09", "10", "11", "12",
+	    "13", "14", "15", "16", "17", "18",
+	    "19", "20", "21", "22", "23", "24",
+	    "25", "26", "27", "28", "29", "30",
+	    "31", "32", "33", "34", "35", "36",
+	    "37", "38", "39", "40", "41", "42",
+	    "43", "44", 45, -1L, 1LL, -1, 1LL
+	    );
+	temp = correct;
+	mbsrtowcs(wbuf2, &temp, sizeof wbuf2, NULL);
+	printf("%sok 2 - print-positional wide\n",
+	       wcscmp(wbuf1, wbuf2) == 0 ? "" : "not ");
+
+	snprintf(buf, sizeof buf, "%2$.*4$s %2$.*3$s %1$s",
+		 "BSD", "bsd", 2, 1);
+	printf("%sok 3 - print-positional precision\n",
+	       strcmp(buf, correct2) == 0 ? "" : "not ");
+
+	swprintf(wbuf1, sizeof buf, L"%2$.*4$s %2$.*3$s %1$s",
+		 "BSD", "bsd", 2, 1);
+	temp = correct2;
+	mbsrtowcs(wbuf2, &temp, sizeof wbuf2, NULL);
+	printf("%sok 4 - print-positional precision wide\n",
+	       wcscmp(wbuf1, wbuf2) == 0 ? "" : "not ");
+
+	exit(0);
+}