commit 6238cc20f0e588f272569230b33458fedf755ab2
author Lewis Hyatt <lhyatt@gmail.com> Tue Nov 01 17:50:27 2022 -0400
committer Lewis Hyatt <lhyatt@gmail.com> Tue Nov 15 10:50:23 2022 -0500
tree 300f206677cf5b7b0739d258452779dd8c188f1c
parent 3037f11fb86eda234a27ab26748958f71a805005

diagnostics: Fix macro tracking for ad-hoc locations

The result of linemap_resolve_location() can be an ad-hoc location, if that is
what was stored in a relevant macro map.  maybe_unwind_expanded_macro_loc()
did not previously handle this case, causing it to print the wrong tracking
information for an example such as the new testcase macro-trace-1.c.  Fix that
by checking for ad-hoc locations where needed.

gcc/ChangeLog:

	* tree-diagnostic.cc (maybe_unwind_expanded_macro_loc): Handle ad-hoc
	location in return value of linemap_resolve_location().

gcc/testsuite/ChangeLog:

	* c-c++-common/cpp/macro-trace-1.c: New test.