https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92136
Pilar Latiesa <pilarlatiesa at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pilarlatiesa at gmail dot com --- Comment #4 from Pilar Latiesa <pilarlatiesa at gmail dot com> --- The issue vanished for 10.0.0 20191126 (x86_64-pc-linux-gnu). Maybe Jason fixed it while implementing CTAD for alias templates. The testcases, however, produce an ICE in 9.2, 8.3, and 7.5, when compiled with -std=c++17 -fchecking.