[Bug target/63815] [5 Regression] g++.dg/other/pr53811.C fails with -mcmodel=large -fpic

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63815

--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #9)
> (In reply to Uroš Bizjak from comment #8)
> > (In reply to H.J. Lu from comment #7)
> > > Created attachment 33942 [details]
> > > A patch
> > 
> > Please also add a testcase that will exercise this functionality.
> 
> ... runtime testcase ...

Here is a testcase:

[hjl@gnu-6 tmp]$ cat foo.h 
struct ICCStringClass
{
  virtual int CreateString (int) = 0;
};

struct AGSCCDynamicObject
{
  virtual void Unserialize () = 0;
};


struct ScriptString:AGSCCDynamicObject, ICCStringClass
{
  virtual int CreateString (int);
  virtual void Unserialize ();
};
[hjl@gnu-6 tmp]$ cat foo1.cc 
#include "foo.h"

int
__attribute__ ((noinline))
CreateNewScriptString (int fromText, bool reAllocate = true)
{
  return fromText;
}

int
__attribute__ ((noinline))
ScriptString::CreateString (int fromText)
{
  return CreateNewScriptString (fromText);
}

void
__attribute__ ((noinline))
ScriptString::Unserialize ()
{
}
[hjl@gnu-6 tmp]$ cat foo2.cc 
#include "foo.h"

int
main ()
{
  ICCStringClass *x = new ScriptString;
  if (x->CreateString (1) != 1)
    __builtin_abort ();
  return 0;
}
[hjl@gnu-6 tmp]$ g++ -shared -fpic -O2 -mcmodel=large -o libfoo.so foo1.cc 
[hjl@gnu-6 tmp]$ g++ foo2.cc ./libfoo.so 
[hjl@gnu-6 tmp]$ ./a.out 
Segmentation fault
[hjl@gnu-6 tmp]$ 

But I am having a hard time to add it to gcc testsuite.