On Thu, 13 Jan 2022 at 11:46, Alex Hornby via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > When compiling folly on Fedora 35 with gcc from the included 11.2.1-7 package, I found that the badge_test code fails to compile, whereas it builds fine with gcc 10.x and with the fedora 35 clang (13.0.0-3.fc35)). > > Bisecting from https://gcc.gnu.org/git/gcc.git with pre-processed source indicates problem introduced in commit: [a2531859bf5bf6cf1f29c0dca85fd26e80904a5d] c++: Alias template in pack expansion [PR99445] Please report this to Bugzilla, thanks.