[Bug preprocessor/82469] New: ICE in _cpp_process_line_notes, at libcpp/lex.c:1066

[heiko at hexco dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82469

            Bug ID: 82469
           Summary: ICE in _cpp_process_line_notes, at libcpp/lex.c:1066
           Product: gcc
           Version: 6.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: heiko at hexco dot de
  Target Milestone: ---
              Host: x86_64-linux-gnu
            Target: x86_64-linux-gnu
             Build: x86_64-linux-gnu (gcc version 6.3.0 20170406 (Ubuntu
                    6.3.0-12ubuntu2))

Created attachment 42322
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42322&action=edit
test code to trigger ICE

Hi,

this code
===
#define B */
#define A /B
#if A
A 1
#endif
===
when run with with "cpp -traditional-cpp -ffreestanding -P issues/ICE.c"
gives

<built-in>: internal compiler error: in _cpp_process_line_notes, at
libcpp/lex.c:1066
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.

In trunk the abort() is now at line 1163 in libcpp/lex.c.

BTW: Wouldn't it be useful for bug reporters to have online access to the
latest build of the compilers in order to quickly check if their bug test cases
are still relevant?

Thanks, Heiko