[Bug go/67968] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:1812

["vogt at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67968

--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Unfortunately I cannot reproduce this yet.  Please try to identify the "faulty"
source file and strip it down to the minimum.

1. Find out in which file the ICE occurs.

1.a Recompile GCC with debug information, e.g. with

$ make CXXFLAGS="-g3 -O2" CFLAGS="$CXXFLAGS" GOCFLAGS="$CXXFLAGS" -j 7 all

1.b Use the commands from comment 4 to run the gccgo-5 command line manually. 
This whould still generate an ICE.

1.c Run the go1 command in gdb.  Just add the option

  -wrapper gdb,--args

at the end of the gccgo-5 command line.  Then type "run" in the debugger.  Gdb
should automatically stop when the ICE occurs.  From there, check the available
information in the current stack frame and the higher ones and see if you can
find the name of the current source file or the function name and possibly the
line number in some structure.  I know nothing about the Go frontent, so
unfortunately you have to figure that out on your own.

2. Strip down the sources as much as possible.

Now that you know which file generates the ICE, try to strip down the api
module as much as possible.  The first step is to get rid of all the other
files in the package.  Next, remove the imports in the faulty file and finally
strip down the file as much as possible to make a standalone test case.