Created attachment 6361 [details] source and exe Windows 64 bit XP Sp2 (though probably affects any 64 bit win) Intel Free pascal version 2.4.4 does generate broken dwarf2 info. It is expected that gdb reports errors in an attempt to use them. GDB 7.3 reports such errors as expected GDB 7.4 crashes Attached is a simple pascal program, and the exe compiled with fpc 2.4.4 (must be 2.4.4 / other fpc do not generate the required broken dwarf) The source was compiled using: fpc.exe -gw hello.pas GDB was downloaded from http://www.drangon.org/mingw/ mingw-w64-bin-x86_64-20120225.7z : native mingw-w64 toolchain under Windows XP/2003 x64, build (gcc 4.6 branch) from SVN 2012-02-25 (29M) http://www.drangon.org/mingw/mirror.php?num=2&fname=mingw-w64-bin-x86_64-20120225.7z Run gdb as follows: gdb.exe -i mi hello.exe Then enter -break-insert main this crashes gdb 7.4 While this is primarily an issue of fpc and while such a broken file can not be debugged, it still should not lead to a crash. Especially since previous gdb versions were able to detect the error
With CVS gdb I get: (gdb) b main invalid dwarf2 offset 118916 ... which is really quite unfriendly, but at least it doesn't crash. I'm not going to close the bug, since I think we ought to fix the error message to convey enough information to diagnose the problem.