[Bug c++/65328] GCC perf issue when compiling templates - 120x slower than Clang

[juchem at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65328

--- Comment #3 from juchem at gmail dot com ---
Created attachment 34965
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34965&action=edit
preprocessed files from gcc 4.9

generated with:

$ time g++-4.9 -Wall -std=c++11 -E -I .
fatal/type/benchmark/prefix_tree_benchmark.cpp

real    0m0.468s
user    0m0.452s
sys     0m0.016s