> I'm using gcc version 2.95.2 19991024 (release) with cygwin B20. > > Is this known behavior? The debugging works for me just fine, on i586-pc-linux-gnu, with gcc 2.95.2 and gdb 4.17.0.13 with Linux support. So either you are not using the right gdb version, or the bug is platform-specific. Regards, Martin