test for what longjmp(.., 0) does

2 files changed, 39 insertions, 0 deletions

diff --git a/src/regress/lib/libc/longjmp/Makefile b/src/regress/lib/libc/longjmp/Makefile
new file mode 100644
index 0000000000..1444cd4374
--- /dev/null
+++ b/src/regress/lib/libc/longjmp/Makefile
@@ -0,0 +1,3 @@
+PROG=   longjmp
+
+.include <bsd.regress.mk>
diff --git a/src/regress/lib/libc/longjmp/longjmp.c b/src/regress/lib/libc/longjmp/longjmp.c
new file mode 100644
index 0000000000..d8b9fe86bd
--- /dev/null
+++ b/src/regress/lib/libc/longjmp/longjmp.c
@@ -0,0 +1,36 @@
+/*      $OpenBSD: longjmp.c,v 1.1 2002/01/04 13:02:57 art Exp $ */
+/*
+ * Artur Grabowski <art@openbsd.org> Public Domain.
+ */
+
+#include <setjmp.h>
+#include <err.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+
+jmp_buf buf;
+
+/*
+ * When longjmp is passed the incorrect arg (0), it should translate it into
+ * something better.
+ *
+ * Test is simple. rlimit the cpu time and throw an incorrect longjmp. If 0
+ * is not translated we'll spin until we hit the cpu time limit.
+ */
+int
+main()
+{
+        struct rlimit rl;
+
+        rl.rlim_cur = 2;
+        rl.rlim_max = 2;
+        if (setrlimit(RLIMIT_CPU, &rl) < 0)
+                err(1, "setrlimit");
+
+        if (setjmp(buf) == 0)
+                longjmp(buf, 0);
+
+        return 0;
+}