[Bug c/81289] New: [8 Regression] ICE in libcpp/line-map.c

["asolokha at gmx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81289

            Bug ID: 81289
           Summary: [8 Regression] ICE in libcpp/line-map.c
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu*, powerpcspe-*-linux-gnu*

gcc-8.0.0-alpha20170625 snapshot ICEs most of the time in one of the following
ways when compiling this snippet:

--------8<--------

ke ()
{
  mm == *&&

-------->8--------

ICE 1:

% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20170625 -w pnr6edbg.c
pnr6edbg.c: In function 'ke':
pnr6edbg.c:3:3: error: 'mm' undeclared (first use in this function)
   mm == *&&
   ^~
pnr6edbg.c:3:3: note: each undeclared identifier is reported only once for each
function it appears in
pnr6edbg.c:3:3: error: expected identifier at end of input
pnr6edbg.c:3:3: internal compiler error: Segmentation fault
0xc5e1f9 crash_signal
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/toplev.c:338
0x14e4064 get_range_from_adhoc_loc
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/libcpp/line-map.c:276
0x14e4064 get_range_from_loc(line_maps*, unsigned int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/libcpp/line-map.c:287
0x14beffb get_finish
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/input.h:107
0x14beffb make_location(unsigned int, unsigned int, unsigned int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/input.c:859
0x637cb4 c_parser_unary_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:7014
0x638d87 c_parser_cast_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6927
0x63960e c_parser_binary_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6857
0x63a1b7 c_parser_conditional_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6475
0x63a9b5 c_parser_expr_no_commas
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6392
0x63ac6d c_parser_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:8623
0x63d363 c_parser_expression_conv
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:8656
0x6506c8 c_parser_statement_after_labels
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:5410
0x6521c4 c_parser_compound_statement_nostart
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:4924
0x65275e c_parser_compound_statement
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:4757
0x64e29a c_parser_declaration_or_fndef
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:2125
0x655dd6 c_parser_external_declaration
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:1469
0x6567f1 c_parser_translation_unit
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:1349
0x6567f1 c_parse_file()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:18131
0x6bda82 c_common_parse_file()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c-family/c-opts.c:1104

ICE 2:

% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20170625 -O2 -w pnr6edbg.c
pnr6edbg.c: In function 'ke':
pnr6edbg.c:3:3: error: 'mm' undeclared (first use in this function)
   mm == *&&
   ^~
pnr6edbg.c:3:3: note: each undeclared identifier is reported only once for each
function it appears in
pnr6edbg.c:3:3: error: expected identifier at end of input
pnr6edbg.c:3:3: internal compiler error: in linemap_macro_map_lookup, at
libcpp/line-map.c:1013
0x14e3f6d linemap_macro_map_lookup
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/libcpp/line-map.c:1013
0x14e3f6d linemap_lookup(line_maps*, unsigned int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/libcpp/line-map.c:947
0x14e3ffc get_range_from_loc(line_maps*, unsigned int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/libcpp/line-map.c:294
0x14beffb get_finish
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/input.h:107
0x14beffb make_location(unsigned int, unsigned int, unsigned int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/input.c:859
0x637cb4 c_parser_unary_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:7014
0x638d87 c_parser_cast_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6927
0x63960e c_parser_binary_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6857
0x63a1b7 c_parser_conditional_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6475
0x63a9b5 c_parser_expr_no_commas
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:6392
0x63ac6d c_parser_expression
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:8623
0x63d363 c_parser_expression_conv
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:8656
0x6506c8 c_parser_statement_after_labels
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:5410
0x6521c4 c_parser_compound_statement_nostart
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:4924
0x65275e c_parser_compound_statement
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:4757
0x64e29a c_parser_declaration_or_fndef
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:2125
0x655dd6 c_parser_external_declaration
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:1469
0x6567f1 c_parser_translation_unit
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:1349
0x6567f1 c_parse_file()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c/c-parser.c:18131
0x6bda82 c_common_parse_file()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20170625/work/gcc-8-20170625/gcc/c-family/c-opts.c:1104