https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94737
Bug ID: 94737 Summary: BIND(C) names are not always treated as case sensitive. Versions < 8 are ok. Product: gcc Version: 8.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: busby1 at llnl dot gov Target Milestone: --- Created attachment 48365 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48365&action=edit A fortran module. Compilation instructions (Linux) and output are in it I will attach a small reproducer for the problem. There is an obvious workaround in this case, to use a C name that is unique even if case sensitivity is disregarded. I do not have easy access to gfortran version 9 or 10, sorry I cannot report on those. Thank you, Lee Busby