https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78341
Bug ID: 78341
Summary: crash on invalid C++ code on x86_64-linux-gnu
(internal compiler error: in
cp_parser_std_attribute_spec, at cp/parser.c:24597)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 7.0.0 20161110 (experimental) [trunk revision 242039] (GCC)
$
$ gcc-trunk small.C
small.C:1:18: internal compiler error: in cp_parser_std_attribute_spec, at
cp/parser.c:24597
alignas (alignas double
^~~~~~
0x7b35cb cp_parser_std_attribute_spec
../../gcc-source-trunk/gcc/cp/parser.c:24596
0x7b35cb cp_parser_std_attribute_spec_seq
../../gcc-source-trunk/gcc/cp/parser.c:24648
0x7b674f cp_parser_decl_specifier_seq
../../gcc-source-trunk/gcc/cp/parser.c:12855
0x7c1191 cp_parser_simple_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12577
0x7c1611 cp_parser_block_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12524
0x7c86d0 cp_parser_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12421
0x7c8ad4 cp_parser_declaration_seq_opt
../../gcc-source-trunk/gcc/cp/parser.c:12297
0x7c8e18 cp_parser_translation_unit
../../gcc-source-trunk/gcc/cp/parser.c:4360
0x7c8e18 c_parse_file()
../../gcc-source-trunk/gcc/cp/parser.c:37988
0x92e852 c_common_parse_file()
../../gcc-source-trunk/gcc/c-family/c-opts.c:1086
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
$ cat small.C
alignas (alignas double
$
