[Bug c++/56926] Crash (without ICE) while compiling Boost.Math

["asmwarrior at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56926

--- Comment #6 from asmwarrior <asmwarrior at gmail dot com> ---
It is very simple to reproduce this bug. Here is the steps I do
1, download the GCC 4.8.2 from MinGW-w64 site, I'm using
i686-4.8.2-release-posix-dwarf-rt_v3-rev1

2, download the boost source package, I'm using boost_1_55_0.7z download from
boost official site, extract its source to some folder like:
D:\mingw-builds\boost_1_55_0.  (Note, no need to build boost library, only the
boost header files are needed for testing)

3, create a simple file named "pch.h", which contains following:
--------------------
#ifndef pch_h
#define pch_h

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"

#include <boost/asio.hpp>
#include <boost/iostreams/filtering_stream.hpp>
#include <boost/program_options.hpp>
#include <boost/thread.hpp>

#pragma GCC diagnostic pop
#endif
-------------------- 

4, create a simple "test.cpp" file, which contains following:
--------------------
#include "pch.h"

int main()
{
    int a;
    int b;
    int c;
    a++;
    b++;
}
--------------------

5, build the pch file by running the command.

g++.exe -Wall -fexceptions  -g  -march=core2 -Wall
-ID:\mingw-builds\boost_1_55_0  -c pch.h -o pch.h.gch

6, now, you will see a file named "pch.h.gch" was generated, its size is bigger
than 200M.

7, compile the test.cpp file by running the command:
g++.exe -v -Wall -fexceptions  -g  -march=core2 -Wall
-ID:\mingw-builds\boost_1_55_0  -Winvalid-pch -include pch.h -c test.cpp -o
test.o

8, I see some verbose messages, but no "test.o" file was generated in the
working directory, also I see no crash dialog shown.

So, this is indeed a bug.

Now, if you comment out some lines in the pch.h file, e.g. only leave the first
#include directive: #include <boost/asio.hpp>, and comment out the later three
include directive, and run the steps again, you get a 47M pch.h.gch and a 206K
test.o file.

I try to use GDB to catch the errors, but failed.
Try use GDB, I did such thing:
gdb g++.exe [enter]
then
set args -v -Wall -fexceptions  -g  -march=core2 -Wall
-ID:\mingw-builds\boost_1_55_0  -Winvalid-pch -include pch.h -c test.cpp -o
test.o [enter]
then
r [enter]

GDB can't catch anything, just the same as I run the command in the Command
line, the last message from GDB is: [Inferior 1 (process 2000) exited with code
01]

Does exit code "01" has some special meaning?

BTW: I have test the GCC 4.9 snapshot
i686-4.9.0-snapshot-20131119-rev205009-posix-dwarf-rt_v4.7z from mingw-w64
site, it has the same bug.