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

ok tdeval@ henning@

2 files changed, 50 insertions, 0 deletions

diff --git a/src/regress/lib/libc/malloc/malloc_errno/Makefile b/src/regress/lib/libc/malloc/malloc_errno/Makefile
new file mode 100644
index 0000000000..73ebe37491
--- /dev/null
+++ b/src/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/src/regress/lib/libc/malloc/malloc_errno/malloc_errno.c b/src/regress/lib/libc/malloc/malloc_errno/malloc_errno.c
new file mode 100644
index 0000000000..61d85e5d41
--- /dev/null
+++ b/src/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;
+}