[Bug preprocessor/69650] [6 Regression] ICE in linemap_line_start, at libcpp/line-map.c:803

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69650

--- Comment #20 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #18)
> FWIW Bernd posted a different patch for this, here:
>   https://gcc.gnu.org/ml/gcc-patches/2016-03/msg00598.html

FWIW, if that works for all testcases here, it seems a better solution. Even if
it misses some corner-case, it seems a better design to catch this invalid
input at the caller and give an error than try to guess in line-map.c what the
caller was trying to do and recover somehow.