[Bug preprocessor/53525] Performance regression due to enabling track-macro-expansion

[jimis at gmx dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53525

--- Comment #5 from jimis <jimis at gmx dot net> 2012-05-30 05:28:31 UTC ---
Created attachment 27520
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27520
In macro.c:collect_args() use obstacks for virt_locs instead of malloc/realloc
vectors.