https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60976
--- Comment #30 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Giuseppe Ottaviano from comment #19) > At Facebook we experienced a similar regression, compilation times more than > doubled for several large C++ files. > We found that the regression was mostly caused by r207240, specifically to > the changes in bits/alloc_traits.h. Just reverting that file brought back > build times almost to previous levels. Do you have a testcase showing this slowdown? I tried a partial specialization and it doesn't make much difference to the test file in comment 5, confirming that the Facebook issue is different from the original bug report, which is caused by the constructor overloads that are required by the standard.
