Re: RFA: PR 66655: Use COFF/PE weak symbols

[Nick Clifton <nickc at redhat dot com>]

Hi Jeff,


> > The attached patch adds the test derived from the BZ.  There is one
> > small problem - I could not find a way to stop the additional source
> > file from being compiled as a test on its own.

> I think for C++ code it's usually worked around by naming the
> additional-source file with ".cc" rather than .C.  Can you give that a
> quick whirl and see if that avoids having the additional file used as a
> a test on its own?

Thanks - that worked. :-)

Revised test attached.  OK to apply ?

Cheers
  Nick

--- /dev/null	2016-01-07 09:30:14.144966933 +0000
+++ gcc/testsuite/g++.dg/pr66655.C	2016-01-07 12:13:15.757187619 +0000
@@ -0,0 +1,25 @@
+/* { dg-do run } */
+/* { dg-additional-sources "pr66655_1.cc" } */
+
+#include "pr66655.h"
+
+extern "C" void abort (void);
+
+#define COOKIE 0xabcd0123
+
+int
+g (void)
+{
+  return COOKIE;
+}
+
+extern int f (void);
+
+int
+main (void)
+{
+  S::set(0);
+  if (f () != COOKIE)
+    abort ();
+  return 0;
+}
--- /dev/null	2016-01-07 09:30:14.144966933 +0000
+++ gcc/testsuite/g++.dg/pr66655_1.cc	2016-01-07 12:04:30.586623022 +0000
@@ -0,0 +1,14 @@
+#include "pr66655.h"
+
+extern int g (void);
+
+int S::i;
+
+int
+f (void)
+{
+  int ret = g ();
+
+  S::set (ret);
+  return ret;
+}
--- /dev/null	2016-01-07 09:30:14.144966933 +0000
+++ gcc/testsuite/g++.dg/pr66655.h	2016-01-05 10:41:45.629561622 +0000
@@ -0,0 +1,5 @@
+struct S
+{
+  static int i;
+  static void set (int ii) { i = -ii; }
+};