[Bug c++/30496] New: Compilation errors when compiled with optimization flags

[csandu4096 at gmail dot com]

When I compile the following code with optimization flags (O1, O2, O3, Os) I
get compilation errors. If the code is compiled without optimizations (-g, -O0)
then everything is ok.

Error.cpp :
#include <libintl.h>

#define _(x) gettext(x)

typedef struct
{
    int code;
    const char* p_str;
} ErrorStr;

static ErrorStr g_errorStrTab[] =
    {
        { 1,        _("Success") },
        { 2,        _("Invalid error code") },
        { 3,        _("Invalid argument") },
        { 4,        _("Convertion error") }
    };

The platform is : Debian 2.2 Potato, glibc 2.1.3

The output of "gcc -v -save-temps -Os -c Error.cpp" is :
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ./configure --enable-languages=c,c++
Thread model: posix
gcc version 4.1.1
 /usr/local/libexec/gcc/i686-pc-linux-gnu/4.1.1/cc1plus -E -quiet -v
-D_GNU_SOURCE Error.cpp -mtune=pentiumpro -Os -fpch-preprocess -o Erro
r.ii
ignoring nonexistent directory "NONE/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1

/usr/local/lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/i686-pc-linux-gnu

/usr/local/lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/backward
 /usr/local/include
 /usr/local/lib/gcc/i686-pc-linux-gnu/4.1.1/include
 /usr/include 
End of search list.
 /usr/local/libexec/gcc/i686-pc-linux-gnu/4.1.1/cc1plus -fpreprocessed Error.ii
-quiet -dumpbase Error.cpp -mtune=pentiumpro -auxbase Error
 -Os -version -o Error.s
GNU C++ version 4.1.1 (i686-pc-linux-gnu) 
    compiled by GNU C version 4.1.1.
GGC heuristics: --param ggc-min-expand=38 --param ggc-min-heapsize=15901
Compiler executable checksum: 6b1156c38beeebd4aa05553feb32ed24
Error.cpp:13: error: statement-expressions are allowed only inside functions
Error.cpp:14: error: statement-expressions are allowed only inside functions
Error.cpp:14: error: redefinition of 'char* __result'
Error.cpp:13: error: 'char* __result' previously declared here
Error.cpp:14: error: redefinition of 'char* __translation__'
Error.cpp:13: error: 'char* __translation__' previously declared here
Error.cpp:14: error: redefinition of 'int __catalog_counter__'
Error.cpp:13: error: 'int __catalog_counter__' previously declared here
Error.cpp:15: error: statement-expressions are allowed only inside functions
Error.cpp:15: error: redefinition of 'char* __result'
Error.cpp:13: error: 'char* __result' previously declared here
Error.cpp:15: error: redefinition of 'char* __translation__'
Error.cpp:13: error: 'char* __translation__' previously declared here
Error.cpp:15: error: redefinition of 'int __catalog_counter__'
Error.cpp:13: error: 'int __catalog_counter__' previously declared here
Error.cpp:16: error: statement-expressions are allowed only inside functions
Error.cpp:16: error: redefinition of 'char* __result'
Error.cpp:13: error: 'char* __result' previously declared here
Error.cpp:16: error: redefinition of 'char* __translation__'
Error.cpp:13: error: 'char* __translation__' previously declared here
Error.cpp:16: error: redefinition of 'int __catalog_counter__'
Error.cpp:13: error: 'int __catalog_counter__' previously declared here


-- 
           Summary: Compilation errors when compiled with optimization flags
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: csandu4096 at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30496