Hi,

with global system gcc-5.0 if one also installs ccache (needing a different
patch for -fplugin=libcc1plugin) it breaks as GDB will read from inferior
DW_AT_producer containing -fpreprocessed (due to ccache used to compile the
inferior).
    <c>   DW_AT_producer    : (indirect string, offset: 0x52): GNU C11 5.0.0 20150114 (Red Hat 5.0.0-0.1) -fpreprocessed -mtune=generic -march=x86-64 -g

It is wrong that gcc puts -fpreprocessed into DW_AT_producer - I may post a gcc
patch for it.  But even if it gets accepted there are already built inferiors
out there which GDB could be compatible (for the 'compile' mode) with.

gdb.compile/*.exp PASSes for it on {x86_64,x86_64-m32}-fedora22pre-linux-gnu.


Thanks,
Jan