[Bug target/95782] [ppc64le] ICE in _cpp_pop_context

["evan@coeus-group.com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95782

--- Comment #1 from Evan Nemerson <evan@coeus-group.com> ---
This seems to also happen on s390x with -mzvector:


# s390x-linux-gnu-gcc-10 -march=z14 -mzvector -o test test.c
test.c:4:1: internal compiler error: in _cpp_pop_context, at
libcpp/macro.c:2644
    4 | b(vector double)
      | ^
0x11da337 _cpp_pop_context
        ../../src/libcpp/macro.c:2644
0x11dcd67 expand_arg
        ../../src/libcpp/macro.c:2601
0x11dc41f replace_args
        ../../src/libcpp/macro.c:1879
0x11dc41f enter_macro_context
        ../../src/libcpp/macro.c:1421
0x11dc7e8 cpp_get_token_1
        ../../src/libcpp/macro.c:2891
0x6393fe c_lex_with_flags(tree_node**, unsigned int*, unsigned char*, int)
        ../../src/gcc/c-family/c-lex.c:458
0x5c96a5 c_lex_one_token
        ../../src/gcc/c/c-parser.c:270
0x5f6517 c_parser_peek_token(c_parser*)
        ../../src/gcc/c/c-parser.c:474
0x5f6517 c_parse_file()
        ../../src/gcc/c/c-parser.c:21742
0x64054b c_common_parse_file()
        ../../src/gcc/c-family/c-opts.c:1190
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