[PATCH] [PATCH] libstdc++: testsuite: Add csignal missing test case

[Xavier Bonaventura]

SIG_IGN also needs to be defined according to the C++ standard.
This was missing in the test.

libstdc++-v3/testsuite/ChangeLog:

    * 18_support/headers/csignal/macros.cc: New test.

Signed-off-by: Xavier Bonaventura <xavibonaventura@gmail.com>
---
 libstdc++-v3/testsuite/18_support/headers/csignal/macros.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libstdc++-v3/testsuite/18_support/headers/csignal/macros.cc b/libstdc++-v3/testsuite/18_support/headers/csignal/macros.cc
index 6d6c8217b36..1076cbca24d 100644
--- a/libstdc++-v3/testsuite/18_support/headers/csignal/macros.cc
+++ b/libstdc++-v3/testsuite/18_support/headers/csignal/macros.cc
@@ -37,6 +37,10 @@ namespace gnu
     #error "SIG_DFL_must_be_a_macro"
 #endif
 
+#ifndef SIG_IGN
+    #error "SIG_IGN_must_be_a_macro"
+#endif
+
 #ifndef SIGFPE
     #error "SIGFPE_must_be_a_macro"
 #endif
-- 
2.43.0