https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78388
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic Status|UNCONFIRMED |NEW Last reconfirmed| |2017-08-23 CC| |egallager at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> --- Confirmed that gcc errors and clang doesn't: $ /usr/local/bin/g++ -c -Wall -Wextra -pedantic -Wshadow 78388.cc 78388.cc: In function ‘void f()’: 78388.cc:4:17: error: declaration of ‘void i’ shadows template parameter (int((void(i), 1))) + 0; ^ 78388.cc:1:10: note: template parameter ‘i’ declared here template<int i> ^~~ $ /sw/opt/llvm-3.1/bin/clang++ -c -Wall -Wextra -pedantic -Wshadow 78388.cc 78388.cc:4:25: warning: expression result unused [-Wunused-value] (int((void(i), 1))) + 0; ~~~~~~~~~~~~~~~~~~~ ^ ~ 1 warning generated. $ Function-style casts are evil, see bug 69818 (which is asking for a warning in a different context, but still)