https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83173
--- Comment #12 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Author: dmalcolm Date: Tue Nov 27 15:49:43 2018 New Revision: 266516 URL: https://gcc.gnu.org/viewcvs?rev=266516&root=gcc&view=rev Log: PR preprocessor/83173: Additional check before decrementing highest_location 2018-11-27 Mike Gulick <mgul...@mathworks.com> PR preprocessor/83173 * files.c (_cpp_stack_include): Check if line_table->highest_location is past current line before decrementing. Modified: trunk/libcpp/ChangeLog trunk/libcpp/files.c