The following invalid code snippet triggers an ICE since GCC 4.2.0:
====================================================
%:%:;
====================================================
bug.cc:1: error: stray '%:%:' in program
bug.cc:1: internal compiler error: vector VEC(fs_p,base) index domain error, in
restore_input_file_stack at toplev.c:1021
Please submit a full bug report, [etc.]
The C frontend doesn't have this problem. Also the version without digraphs
is rejected correctly:
====================================================
##;
====================================================
bug.cc:1: error: stray '##' in program
--
Summary: [4.2/4.3/4.4 regression] ICE with stray digraph token
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, error-recovery, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35326
