[PATCH xts] tet: Ignore SIGWINCH (terminal window size change)

[Aaron Plattner]

This signal is asserted when the controlling terminal changes size,
for example if you're running xts from an xterm and you resize the
window.  This causes test tests to fail:

  70||"VSW5TESTSUITE CASE FillPoly 3"
  10|34 /Xproto/pFillPoly 15:28:48|TC Start, scenario ref 71-0
  15|34 3.3-lite 3|TCM Start
  510|34|system 0: Abandoning testset: caught unexpected signal 28 (unknown signal)
  80|34 1 15:28:49|TC End, scenario ref 71-0

These signals can't affect the test environment, so just ignore them
all the time.

Signed-off-by: Aaron Plattner <aplattner at nvidia.com>
---
Tracking down test intermittency only to find that it's caused by me
unconsciously rearranging my windows all the time gets really old really
quickly.

 src/tet3/tcm/dtcm.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/tet3/tcm/dtcm.c b/src/tet3/tcm/dtcm.c
index ecfc0a3..3d56e8d 100644
--- a/src/tet3/tcm/dtcm.c
+++ b/src/tet3/tcm/dtcm.c
@@ -720,6 +720,14 @@ void	(*func)();
 	{
 		sig_init("TET_SIG_IGN", &sig_ign);
 		sig_init("TET_SIG_LEAVE", &sig_leave);
+#if defined(SIGWINCH)
+		/*
+		 * Ignore terminal window size changes, which don't affect the
+		 * test environment.
+		 */
+		sigaddset(&sig_ign, SIGWINCH);
+#endif
+
 		init_done = 1;
 	}
 
-- 
1.7.4.1