Test if malloc() sets errno correctly if it returns NULL.

ok tdeval@ henning@

2 files changed, 50 insertions, 0 deletions

diff --git a/regress/lib/libc/malloc/malloc_errno/Makefile b/regress/lib/libc/malloc/malloc_errno/Makefile
new file mode 100644
index 00000000000..73ebe374919
--- /dev/null
+++ b/regress/lib/libc/malloc/malloc_errno/Makefile
@@ -0,0 +1,5 @@
+#	$OpenBSD: Makefile,v 1.1 2003/07/15 10:06:31 otto Exp $
+
+PROG=	malloc_errno
+
+.include <bsd.regress.mk>
diff --git a/regress/lib/libc/malloc/malloc_errno/malloc_errno.c b/regress/lib/libc/malloc/malloc_errno/malloc_errno.c
new file mode 100644
index 00000000000..61d85e5d410
--- /dev/null
+++ b/regress/lib/libc/malloc/malloc_errno/malloc_errno.c
@@ -0,0 +1,45 @@
+/*	$OpenBSD: malloc_errno.c,v 1.1 2003/07/15 10:06:31 otto Exp $	*/
+/*
+ * Public domain.  2003, Otto Moerbeek
+ */
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static void
+testerrno(size_t sz)
+{
+	void *p;
+
+	errno = -1;
+	p = malloc(sz);
+
+	if (p == NULL && errno != ENOMEM)
+		errx(1, "fail: %lx %p %d\n", (unsigned long)sz, p, errno);
+
+	/* if alloc succeeded, test if errno did not change */
+	if (p != NULL && errno != -1) 
+		errx(1, "fail: %lx %p %d\n", (unsigned long)sz, p, errno);
+
+	free(p);
+}
+
+/*
+ * Provide some (silly) arguments to malloc(), and check if ERRNO is set
+ * correctly.
+ */
+int
+main()
+{
+	size_t i;
+
+	testerrno(1);
+	testerrno(100000);
+	testerrno(-1);
+	testerrno(-1000);
+	testerrno(-10000);
+	for (i = 0; i < 0x10; i++)
+		testerrno(i * 0x10000000);
+	return 0;
+}