[Bug target/67129] x86: erratic parsing of "#pragma GCC target ("...")"

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67129

--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 36139
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36139&action=edit
experimental fix

The attached patch fixes the problem for me (on x86), but it really needs
reviewing.