From 5642f5d5d5e3f6867cbe4b7b6fb1588365514c9c Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 24 Sep 2010 16:14:40 +0100
Subject: common.opt (undef): New.

	* common.opt (undef): New.

testsuite:
	* gcc.dg/cpp/undef-opt-1.c: New test.

From-SVN: r164599
---
 gcc/testsuite/gcc.dg/cpp/undef-opt-1.c | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/cpp/undef-opt-1.c

(limited to 'gcc/testsuite/gcc.dg')

diff --git a/gcc/testsuite/gcc.dg/cpp/undef-opt-1.c b/gcc/testsuite/gcc.dg/cpp/undef-opt-1.c
new file mode 100644
index 0000000..99c5246
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/undef-opt-1.c
@@ -0,0 +1,8 @@
+/* Test -undef.  A bug in its handling broke glibc builds because
+   "linux" was wrongly defined.  */
+/* { dg-do preprocess } */
+/* { dg-options "-undef" } */
+
+#ifdef linux
+#error -undef broken
+#endif
-- 
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