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Make kprintf_test resistant to limbo

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Justine Tunney 2022-11-13 14:26:19 -08:00
parent 711bd095db
commit a277170c9a
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GPG key ID: BE714B4575D6E328
1 changed files with 7 additions and 4 deletions
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11
test/libc/intrin/kprintf_test.c
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@ -245,13 +245,16 @@ TEST(ksnprintf, fuzzTheUnbreakable) {
TEST(kprintf, testFailure_wontClobberErrnoAndBypassesSystemCallSupport) { TEST(kprintf, testFailure_wontClobberErrnoAndBypassesSystemCallSupport) {
int n; int n;
const char *s = 0;
ASSERT_EQ(0, errno); ASSERT_EQ(0, errno);
EXPECT_SYS(0, 3, dup(2)); EXPECT_SYS(0, 3, dup(2));
EXPECT_SYS(0, 0, close(2)); // <LIMBO>
if (close(2)) _Exit(200);
n = __syscount; n = __syscount;
EXPECT_EQ(n, __syscount); if (__syscount != n) _Exit(201);
EXPECT_EQ(0, errno); if (errno != 0) _Exit(202);
EXPECT_SYS(0, 2, dup2(3, 2)); if (dup2(3, 2) != 2) _Exit(203);
// </LIMBO>
EXPECT_SYS(0, 0, close(3)); EXPECT_SYS(0, 0, close(3));
} }