https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84259
--- Comment #1 from Matthias Klose <doko at gcc dot gnu.org> ---
$ cat aatree.ii
#pragma GCC target "sse4.2"
(sid)doko@x1:/home/packages/gcc/8/gcc-8-8-20180207$ build/gcc/xg++ -Bbuild/gcc/
-mrtm -mcet -std=gnu++11 -fcf-protection=full -funwind-tables -fno-exceptions
-fno-rtti -fabi-version=4 -fPIC -c -g -O0 -Wall aatree.ii
aatree.ii:1:20: internal compiler error: in ix86_option_override_internal, at
config/i386/i386.c:4948
#pragma GCC target "sse4.2"
^~~~~~~~
0xdeaf3a ix86_option_override_internal
../../src/gcc/config/i386/i386.c:4948
0xdf8558 ix86_valid_target_attribute_tree(tree_node*, gcc_options*,
gcc_options*)
../../src/gcc/config/i386/i386.c:5652
0x7770fb ix86_pragma_target_parse
../../src/gcc/config/i386/i386-c.c:538
0x75e65d handle_pragma_target
../../src/gcc/c-family/c-pragma.c:907
0x6840fc cp_parser_pragma
../../src/gcc/cp/parser.c:38764
0x6a7e33 cp_parser_declaration_seq_opt
../../src/gcc/cp/parser.c:12595
0x6a80cc cp_parser_translation_unit
../../src/gcc/cp/parser.c:4559
0x6a80cc c_parse_file()
../../src/gcc/cp/parser.c:38820
0x75c036 c_common_parse_file()
../../src/gcc/c-family/c-opts.c:1132
Please submit a full bug report,
with preprocessed source if appropriate.
