Re: GCC testsuite run before and after ~2.12.1 upgraded to pre-2.13

["H. J. Lu" <hjl@lucon.org>]

On Thu, Jul 25, 2002 at 11:30:24PM -0500, Loren James Rittle wrote:
> (Based upon the analysis below, I am CCing gcc-bugs RE PR 7171.  The
>  version numbers in the subject line refer to binutils.  Quick
>  summary: More C++ test cases fail with binutils pre-2.13 than failed
>  with binutils ~2.12.1.  This behavior has been spotted on a wide
>  variety of platforms.)
> 
> Thank you Jason R Thorpe, Alan Modra and Ian Lance Taylor for the
> discussion you held last week on this topic.  Here is what I see when
> I build "element_access.exe" on i386-unknown-freebsd4.6 (a newly
> failing C++ libstdc++-v3 test case, upon binutils upgrade to pre-2.13
> with full rebootstrap of gcc) with -Map:
> 
> [...]
> .rodata         0x08048e80      0x14d
>  *(.rodata .rodata.* .gnu.linkonce.r.*)
>  .rodata        0x08048e80        0x1 /usr/lib/crt1.o
>  *fill*         0x08048e81       0x1f 00
>  .rodata        0x08048ea0      0x10f /var/tmp//ccAEn9wX.o
>  *fill*         0x08048faf        0x1 00
>  .gnu.linkonce.r._ZTISt12out_of_range
>                 0x08048fb0        0xc /var/tmp//ccAEn9wX.o
>                 0x08048fb0                _ZTISt12out_of_range
>  .gnu.linkonce.r._ZTSSt12out_of_range
>                 0x08048fbc       0x11 /var/tmp//ccAEn9wX.o
>                 0x08048fbc                _ZTSSt12out_of_range
> [...]
> 
> Tracing back, I see these entries in "element_access.o":
> 
>   [16] .gnu.linkonce.r._ PROGBITS        00000000 008f2c 00000c 00  WA  0   0  4
>   [18] .gnu.linkonce.r._ PROGBITS        00000000 008f38 000011 00   A  0   0  1
> 
> Based on size of element, it appears that _ZTISt12out_of_range (AKA
> ``typeinfo for std::out_of_range'') is of interest.  Tracing back from
> here, I see this in the g++-produced asm:
> 
>         .section        .gnu.linkonce.r._ZTISt12out_of_range,"aw",@progbits
> 

FWIW, on Linux/x86, I got

        .section        .gnu.linkonce.d._ZTISt12out_of_range,"aw",@progbits
        .section        .gnu.linkonce.r._ZTSSt12out_of_range,"a",@progbits
        .section        .gnu.linkonce.d._ZTISt11logic_error,"aw",@progbits
        .section        .gnu.linkonce.r._ZTSSt11logic_error,"a",@progbits
        .section        .gnu.linkonce.d._ZTISt9exception,"aw",@progbits
        .section        .gnu.linkonce.r._ZTSSt9exception,"a",@progbits

You may want to check out why BSDs are different.


H.J.