[Bug tree-optimization/87562] [9 Regression] ICE in in linemap_position_for_line_and_column, at libcpp/line-map.c:848

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87562

--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
linemap_position_for_line_and_column(line_maps*, line_map_ordinary const*,
unsigned int, unsigned int) at libcpp/line-map.c:848
is:
  linemap_assert (ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map) <= line);

I wonder if I introduced this in r264887 with the changes to input.c
(macro-handling and concatenated strings), which touched the function in the
next frame.

I'll see if I can reproduce it.