From a277170c9a9f775e6ef51f052cf971c7f1772575 Mon Sep 17 00:00:00 2001
From: Justine Tunney <jtunney@gmail.com>
Date: Sun, 13 Nov 2022 14:26:19 -0800
Subject: [PATCH] Make kprintf_test resistant to limbo

---
 test/libc/intrin/kprintf_test.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/test/libc/intrin/kprintf_test.c b/test/libc/intrin/kprintf_test.c
index ab6c64a11..aed2c997b 100644
--- a/test/libc/intrin/kprintf_test.c
+++ b/test/libc/intrin/kprintf_test.c
@@ -245,13 +245,16 @@ TEST(ksnprintf, fuzzTheUnbreakable) {
 
 TEST(kprintf, testFailure_wontClobberErrnoAndBypassesSystemCallSupport) {
   int n;
+  const char *s = 0;
   ASSERT_EQ(0, errno);
   EXPECT_SYS(0, 3, dup(2));
-  EXPECT_SYS(0, 0, close(2));
+  // <LIMBO>
+  if (close(2)) _Exit(200);
   n = __syscount;
-  EXPECT_EQ(n, __syscount);
-  EXPECT_EQ(0, errno);
-  EXPECT_SYS(0, 2, dup2(3, 2));
+  if (__syscount != n) _Exit(201);
+  if (errno != 0) _Exit(202);
+  if (dup2(3, 2) != 2) _Exit(203);
+  // </LIMBO>
   EXPECT_SYS(0, 0, close(3));
 }