Re: -Wtraditional vs glibc

[Richard Henderson <rth at redhat dot com>]

On Fri, Dec 21, 2001 at 06:45:17PM +0000, Joseph S. Myers wrote:
> You should have a testcase (perhaps by adding a suitable case, with
> __extension__, to wtr-aggr-init-1.c).

Done.


r~


        * gcc.dg/wtr-aggr-init-1.c: Test that __extension__ disables then
        re-enables the warning.

Index: gcc.dg/wtr-aggr-init-1.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/testsuite/gcc.dg/wtr-aggr-init-1.c,v
retrieving revision 1.2
diff -u -p -r1.2 wtr-aggr-init-1.c
--- wtr-aggr-init-1.c	2000/12/07 23:21:09	1.2
+++ wtr-aggr-init-1.c	2001/12/21 19:13:20
@@ -20,19 +20,29 @@ testfunc1 (void)
   static struct foo f4 = { 0, 0 };
   
   f3 = f4;
+
+  __extension__ ({
+    struct foo f5 = { 0, 0 }; /* { dg-bogus "traditional C rejects automatic" "__extension__ disables warnings" } */
+    f5.i = 0;
+  });
+
+  {
+    struct foo f6 = { 0, 0 }; /* { dg-warning "traditional C rejects automatic" "__extension__ reenables warnings" } */
+    f6.i = 0;
+  }
 }
   
-# 26 "sys-header.h" 3
+# 35 "sys-header.h" 3
 /* We are in system headers now, no -Wtraditional warnings should issue.  */
 
-struct foo f5 = { 0, 0 };
-static struct foo f6 = { 0, 0 };
+struct foo f7 = { 0, 0 };
+static struct foo f8 = { 0, 0 };
 
 void
 testfunc2 (void)
 {
-  struct foo f7 = { 0, 0 };
-  static struct foo f8 = { 0, 0 };
+  struct foo f9 = { 0, 0 };
+  static struct foo f10 = { 0, 0 };
   
-  f7 = f8;
+  f9 = f10;
 }