https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120207
Bug ID: 120207 Summary: [12/13/14/15/16 Regression] print_rtl_single_with_indent is undefined Product: gcc Version: 16.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com Target Milestone: --- rtl.h has extern void print_rtl_single_with_indent (FILE *, const_rtx, int); But it isn't defined. It looks like an oversight when switching GCC source to C++.