Re: AIX/g++ const structs containing function addresses fail.

["Norman E. Brake, Jr." <nebrake at austin dot ibm dot com>]

My fix was to move an opcode constant from the c++ sub-tree
up to the
main C compiler and add it to the code gen switch to trigger
a switch
away from the text sect.  As follows:

diff -c -r gcc-2.95.1/gcc/cp/cp-tree.def
gcc-2.95.1-norm/gcc/cp/cp-tree.def
*** gcc-2.95.1/gcc/cp/cp-tree.def       Mon May 17 11:07:30
1999
--- gcc-2.95.1-norm/gcc/cp/cp-tree.def  Tue Aug 24 13:41:18
1999
***************
*** 29,39 ****
     just won't work for us.  */
  DEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2)
  
- /* A pointer-to-member constant.  For a pointer-to-member
constant
-    `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X'
and the
-    PTRMEM_CST_MEMBER is the _DECL for `Y'.  */
- DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 1)
- 
  /* For NEW_EXPR, operand 0 is the placement list.
     Operand 1 is the new-declarator.
     Operand 2 is the initializer.  */
--- 29,34 ----
diff -c -r gcc-2.95.1/gcc/tree.def
gcc-2.95.1-norm/gcc/tree.def
*** gcc-2.95.1/gcc/tree.def     Mon May 17 02:21:12 1999
--- gcc-2.95.1-norm/gcc/tree.def        Tue Aug 24 13:41:14
1999
***************
*** 790,795 ****
--- 790,800 ----
     Operand 1 contains the case values. The way they're
organized is
     front-end implementation defined. */
  DEFTREECODE (SWITCH_EXPR, "switch_expr", 'e', 2)
+ 
+ /* A pointer-to-member constant.  For a pointer-to-member
constant
+    `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X'
and the
+    PTRMEM_CST_MEMBER is the _DECL for `Y'.  */
+ DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 1)
  /*
  Local variables:
  mode:c
Only in gcc-2.95.1-norm/gcc: tree.def~
diff -c -r gcc-2.95.1/gcc/varasm.c
gcc-2.95.1-norm/gcc/varasm.c
*** gcc-2.95.1/gcc/varasm.c     Wed Jun  9 07:13:49 1999
--- gcc-2.95.1-norm/gcc/varasm.c        Tue Aug 24 13:42:25
1999
***************
*** 3871,3876 ****
--- 3871,3880 ----
        }
        break;
  
+     case PTRMEM_CST:
+       reloc = 1; 
+       break;
+ 
      default:
        break;
      }



> Matthew Brown wrote:
> 
> Has there been any resolution to this one? I think that I
> may be observing a similar problem if not the same one:
> 
> I am attempting to build libstdc++ version 2.90.6 on AIX
> 4.2.1 for PPC RS/6000. When linking the shared object
> version of the library, the linker returns the error --
> ld: 0711-302 ERROR: Object localename.o, csect
> <_localename.rw_cc>
>         The csect is part of the .text section, and
> relocation entries
>         from the csect have been written to the .loader
> section.
> 
> The static library links fine and when I dump headers from
> localename.o, there is no .loader section listed.
> 
> I have received the same behavior with GCC versions 2.95.1
> and 2.95.2.
> 
> Thanks for any help or pointers.
> 
> -- Matthew Brown