1 files changed, 72 insertions, 0 deletions

diff --git a/openbsd-compat/regress/snprintftest.c b/openbsd-compat/regress/snprintftest.c
new file mode 100644
index 000000000..e25bf223f
--- /dev/null
+++ b/openbsd-compat/regress/snprintftest.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2005 Darren Tucker
+ * Copyright (c) 2005 Damien Miller
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define BUFSZ 2048
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+static int failed = 0;
+
+static void
+fail(const char *m)
+{
+        fprintf(stderr, "%s", m);
+        failed = 1;
+}
+
+int x_snprintf(char *str, size_t count, const char *fmt, ...)
+{
+        size_t ret;
+        va_list ap;
+
+        va_start(ap, fmt);
+        ret = vsnprintf(str, count, fmt, ap);
+        va_end(ap);
+        return ret;
+}
+
+int
+main(void)
+{
+        char b[5];
+        char *src;
+
+        snprintf(b,5,"123456789");
+        if (b[4] != '\0')
+                fail("snprintf does not correctly terminate long strings");
+
+        /* check for read overrun on unterminated string */
+        if ((src = malloc(BUFSZ)) == NULL) {
+                fail("malloc failed");
+        } else {
+                memset(src, 'a', BUFSZ);
+                snprintf(b, sizeof(b), "%.*s", 1, src);
+                if (strcmp(b, "a") != 0)
+                        fail("failed with length limit '%%.s'");
+        }
+
+        /* check that snprintf and vsnprintf return sane values */
+        if (snprintf(b, 1, "%s %d", "hello", 12345) != 11)
+                fail("snprintf does not return required length");
+        if (x_snprintf(b, 1, "%s %d", "hello", 12345) != 11)
+                fail("vsnprintf does not return required length");
+
+        return failed;
+}