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Another cpplib testcase
- To: gcc-patches at gcc dot gnu dot org
- Subject: Another cpplib testcase
- From: Neil Booth <neil at daikokuya dot demon dot co dot uk>
- Date: Tue, 2 Oct 2001 23:27:51 +0100
I realised that my initial (local) version of the _Pragma patch I
posted earlier today broke the example below, which I don't think is
covered in the testsuite. So I'll add it. [The mailed and committed
patch doesn't have the bug].
Neil.
* gcc.dg/cpp/macro11.c: New test.
Index: gcc.dg/cpp/macro11.c
===================================================================
RCS file: macro11.c
diff -N macro11.c
--- /dev/null Tue May 5 13:32:27 1998
+++ macro11.c Tue Oct 2 15:27:31 2001
@@ -0,0 +1,16 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc. */
+
+/* { dg-do preprocess } */
+
+/* Source: Neil Booth, 2 Oct 2001.
+
+ Tests that we clear the disabled flag that is set by the
+ macro-defined-to-itself optimization (the optimization might not be
+ worth it). */
+
+#define foo foo
+#undef foo
+#define foo 1
+#if !foo
+#error foo still disabled!
+#endif