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-rw-r--r--test/syscalls/linux/pty.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc
index aabfa6955..f9392b9e0 100644
--- a/test/syscalls/linux/pty.cc
+++ b/test/syscalls/linux/pty.cc
@@ -634,6 +634,11 @@ TEST_F(PtyTest, TermiosAffectsSlave) {
// Verify this by setting ICRNL (which rewrites input \r to \n) and verify that
// it has no effect on the master.
TEST_F(PtyTest, MasterTermiosUnchangable) {
+ struct kernel_termios master_termios = {};
+ EXPECT_THAT(ioctl(master_.get(), TCGETS, &master_termios), SyscallSucceeds());
+ master_termios.c_lflag |= ICRNL;
+ EXPECT_THAT(ioctl(master_.get(), TCSETS, &master_termios), SyscallSucceeds());
+
char c = '\r';
ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1));