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References: <bug-44724-19380@http.gcc.gnu.org/bugzilla/>
Subject: [Bug lto/44724] LTO segfault with -fuse-linker-plugin
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------- Comment #5 from rguenth at gcc dot gnu dot org  2010-07-01 11:35 -------
Confirmed.  Works without -fuse-linker-plugin.

Reduced testcases:

wave.ii
-------
typedef unsigned int reg8;
typedef unsigned int reg12;
class WaveformGenerator {
public:
    reg8 readOSC();
    inline reg12 output();
    reg8 waveform;
    reg12 output____();
};
inline reg12 WaveformGenerator::output() {
    switch (waveform) {
        default:
            return output____();
    }
}
reg8 WaveformGenerator::readOSC() {
    return output() >> 4;
}

sid.ii
------
typedef unsigned int reg8;
typedef unsigned int reg12;
typedef int sound_sample;
class WaveformGenerator {
public:
    reg8 readOSC();
    inline reg12 output();
    reg8 waveform;
    reg12 output____();
};
inline reg12 WaveformGenerator::output() {
    switch (waveform) {
        case 0x0:
            return output____();
    }
}
class Voice {
    inline sound_sample output();
    WaveformGenerator wave;
    friend class SID;
};
inline sound_sample Voice::output() {
    return wave.output();
};
class Filter {
public:
    void clock(sound_sample voice1, sound_sample voice2, sound_sample voice3);
};
class SID {
    void clock();
    Voice voice[3];
    Filter filter;
};
void SID::clock() {
  filter.clock(voice[0].output(), voice[1].output(), voice[2].output());
}

rguenther@murzim:/tmp> g++-4.5 -r -nostdlib -O2 -march=pentium4 -flto
-fuse-linker-plugin -m32 sid.3.ii wave.3.ii
/usr/bin/gold: error: /tmp/ccbAKTWf.lto.o: incompatible target
collect2: ld returned 1 exit status
rguenther@murzim:/tmp> g++-4.5 -r -nostdlib -O2 -march=pentium4 -flto
-fuse-linker-plugin -m32 wave.3.ii sid.3.ii
lto1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.
lto-wrapper: g++-4.5 returned 1 exit status
/usr/bin/gold: fatal error: lto-wrapper failed
collect2: ld returned 1 exit status


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |lto
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-01 11:35:19
               date|                            |
            Summary|LTO segfault                |LTO segfault with -fuse-
                   |                            |linker-plugin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44724