https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485 --- Comment #2 from Sergio Prado <sergio.prado@e-labworks.com> --- Created attachment 41957 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41957&action=edit Pre-processed file from rtcm2_json.c compiled with -E option Here is the pre-processed file.