https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66924
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-08-21 CC| |egallager at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> --- Confirmed: $ /usr/local/bin/g++ -c -Wall -Wextra -pedantic 66924.cc 66924.cc: In function ‘int main()’: 66924.cc:5:37: error: parse error in template argument list auto f = [] (int x) -> decltype(variable<x>) {return{};}; ^~~~~~~~~~~ 66924.cc:5:37: error: template argument 1 is invalid 66924.cc: In lambda function: 66924.cc:5:22: warning: unused parameter ‘x’ [-Wunused-parameter] auto f = [] (int x) -> decltype(variable<x>) {return{};}; ^ $