confusing "bug is not reproducible, so it is likely a hardware or OS problem" message

[Basile Starynkevitch]

Hello All,

When a plugin calls fatal_error, the compilation naturally fails, 
but the last error message is misleading, it says 
(while getting a bug in the MELT plugin for example)


cc1: fatal error: MELT plugin module compilation failed (512) in /home/basile/tmp for command make -s -f /usr/lib/gcc/x86_64-linux-gnu/4.7/plugin/melt-module-0.9.7-rc1.mk GCCMELT_MODULE_SOURCEBASE=/tmp/filegInaXb-GccMeltTmp-e6c45b3/MELTrun0001_eXt GCCMELT_MODULE_BINARYBASE=/tmp/filegInaXb-GccMeltTmp-e6c45b3/MELTrun0001_eXt  MELTGCC_BUILD_WITH_CXX=YesPlugin GCCMELT_CFLAGS=-I\ /usr/lib/gcc/x86_64-linux-gnu/4.7/plugin/melt-headers/0.9.7-rc1\ -I\ /usr/lib/gcc/x86_64-linux-gnu/4.7/plugin/include\ -I\ /usr/lib/gcc/x86_64-linux-gnu/4.7/plugin/include/c-family\ \ -DIN_GCC\ -DMELT_IS_PLUGIN\ -O  GCCMELT_MODULE_WORKSPACE=/tmp/filegInaXb-GccMeltTmp-e6c45b3/ GCCMELT_MODULE_FLAVOR=runextend melt_module
compilation terminated.
The bug is not reproducible, so it is likely a hardware or OS problem.

This last sentence is very confusing. I would like to replace it with e.g.

  The bug is not reproducible, so it could be a plugin, hardware or OS problem

But I didn't find that string with grep on GCC trunk's source files. 

Where does that message come from?

Regards.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359
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