[Bug c++/39187] New: G++ doesn't use string literal in inline function

["hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

[hjl@gnu-6 936]$ cat x.cc
#include "foo.h"

const char *
x (void)
{
  return f ();
}
[hjl@gnu-6 936]$ cat y.cc
#include <stdio.h>
#include "foo.h"

extern const char *x (void);

int
main ()
{
  printf ("%p, %p\n", x (), f ());
  return 0;
}
[hjl@gnu-6 936]$ cat foo.h
inline const char *
f ()
{
  static const char *p = "Itanium C++ ABI";
  return p;
}
[hjl@gnu-6 936]$ cat x.s
        .file   "x.cc"
        .section        .text._Z1fv,"axG",@progbits,_Z1fv,comdat
        .p2align 4,,15
        .weak   _Z1fv
        .type   _Z1fv, @function
_Z1fv:
        movq    _ZZ1fvE1p(%rip), %rax
        ret
        .size   _Z1fv, .-_Z1fv
        .text
        .p2align 4,,15
.globl _Z1xv
        .type   _Z1xv, @function
_Z1xv:
        movq    _ZZ1fvE1p(%rip), %rax
        ret
        .size   _Z1xv, .-_Z1xv
        .weak   _ZZ1fvE1p
        .section        .rodata.str1.1,"aMS",@progbits,1
.LC0:
        .string "Itanium C++ ABI"

Both x.s and y.s have a string:

.string "Itanium C++ ABI"

It should be put in string literal as specified in C++ ABI:

http://www.codesourcery.com/public/cxx-abi/abi.html#mangling

so that only one copy will be in the executable/DSO.


-- 
           Summary: G++ doesn't use string literal in inline function
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39187