[Bug c++/12844] New: ICE on anonymous struct inheritance with -gxcoff on AIX

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12844

           Summary: ICE on anonymous struct inheritance with -gxcoff on AIX
           Product: gcc
           Version: 3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: casey dot liscum at isinet dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-ibm-aix5.1.0.0
  GCC host triplet: powerpc-ibm-aix5.1.0.0
GCC target triplet: powerpc-ibm-aix5.1.0.0

ICE in g++ when inheriting a typedef'd anonymous struct, and when compiling with
-gxcoff on AIX. This code works on Linux i686 and Solaris with the same compiler
version. The problem is non-existant without -gxcoff.

Environment:
System: AIX sandbox 1 5 000CC40D4C00


	
host: powerpc-ibm-aix5.1.0.0
build: powerpc-ibm-aix5.1.0.0
target: powerpc-ibm-aix5.1.0.0
configured with: ./configure --prefix=/links/extern/aix51

How-To-Repeat:
--- foo.cpp -------------------------
typedef struct {} foo_s;
class foo : public foo_s {};
-------------------------------------

$ g++ -Wall -gxcoff -c -o foo.o foo.cpp
foo.cpp:2: Internal compiler error in tree_low_cst, at tree.c:3485
...

--- foo.ii --------------------------
# 1 "foo.cpp"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "foo.cpp"
typedef struct {} foo_s;
class foo : public foo_s {};
-------------------------------------

--- foo.s ---------------------------
        .file   "foo.cpp"
        .toc
        .csect _foo.rw_cpp[RW],3
        .csect .text[PR]
        .stabx  "__int128_t:t1=r1;0;-1;",0,140,0
        .stabx  "__uint128_t:t2=r2;0;-1;",0,140,0
        .stabx  "complex int:t3=s8real:-1,0,32;imag:-1,32,32;;",0,140,0
        .stabx  "complex float:t4=R3;8;0;",0,140,0
        .stabx  "complex double:t5=R4;16;0;",0,140,0
        .stabx  "complex long double:t6=R4;16;0;",0,140,0
        .stabx  "wchar_t:t7=r7;0;65535;",0,140,0
        .stabx  "__builtin_va_list:t8=*-2",0,140,0
        .stabx  "bool:t9=eFalse:0,True:1,;",0,140,0
        .stabx  "__vtbl_ptr_type:t10=*11=f-1",0,140,0
        .stabx  "foo_s:t12=s1;",0,140,0
        .stabx  "foo:T13=s1foo_s:12,0,sandbox:/work/links/cliscum/Links-MAIN/isilib/ctree 
------------------------------------
------- Additional Comments From casey dot liscum at isinet dot com  2003-10-30 17:23 -------
Fix:
1) Compile without -gxcoff 
2) Change line 1 of foo.cpp thus:
< typedef struct {} foo_s;
---
> typedef struct SOMENAME {} foo_s;