[Bug binutils/2842] New: Objcopy fails on AIX 5.1

[henrik_goldman at mail dot tele dot dk]

I would like to localize symbols within an unlinked object file on AIX 5.1. 

However it seems that the symbols doesn't really get localized by 
examining 'nm' output:

test.cpp:
#include <stdio.h>
#include <stdlib.h>

void foo()
{
printf("foo\n");
}

void bar()
{
printf("bar\n");
}

int main()
{
foo();
bar();

return 0;
}

bash-3.00# nm test.o
0000000000000148 d .data
0000000000000148 D _GLOBAL__F__Z3foov
                 U __gxx_personality_v0
0000000000000208 d LC..0
0000000000000210 d LC..2
0000000000000130 D main
0000000000000130 d main
00000000000000a0 T .main
                 U .printf
00000000000000f0 t _test.rw_cpp
0000000000000000 t .text
0000000000000208 d TOC
0000000000000118 d _Z3barv
0000000000000118 D _Z3barv
0000000000000050 T ._Z3barv
0000000000000100 d _Z3foov
0000000000000100 D _Z3foov
0000000000000000 T ._Z3foov

bash-3.00# objcopy -G main test.o test2.o

bash-3.00# nm test2.o
0000000000000148 d .data
0000000000000148 D _GLOBAL__F__Z3foov
                 U __gxx_personality_v0
0000000000000208 d LC..0
0000000000000210 d LC..2
0000000000000130 D main
0000000000000130 d main
00000000000000a0 T .main
                 U .printf
00000000000000f0 t _test.rw_cpp
0000000000000000 t .text
0000000000000208 d TOC
0000000000000118 d _Z3barv
0000000000000118 D _Z3barv
0000000000000050 T ._Z3barv
0000000000000100 d _Z3foov
0000000000000100 D _Z3foov
0000000000000000 T ._Z3foov

Looking at the last output foo and bar symbols are the same as before.

Also when compiling with 'g++ -maix64' switch on large objects (around 1 mb) 
objcopy fails by generating bad code:

(objcopy -G main in.o out.o was invoked prior to this command)

gcc -maix64 -lpthread -o test-broken broken.o 
ld: 0711-590 SEVERE ERROR: Object lmxserverrtw.o cannot be processed.
        The length field at the beginning of the string table is invalid.
collect2: ld returned 12 exit status

A broken object file (which worked fine prior to being processed with objcopy) 
can be given upon request to address@hidden

-- 
           Summary: Objcopy fails on AIX 5.1
           Product: binutils
           Version: 2.17
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: binutils
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: henrik_goldman at mail dot tele dot dk
                CC: bug-binutils at gnu dot org


http://sourceware.org/bugzilla/show_bug.cgi?id=2842

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