https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70248
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail|6.0 |6.1.0 --- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> --- Below is another example, one that even elicits a warning where GCC points out the unspecified behavior: $ cat xx.cpp && gcc -S -Wall -Wextra -Wpedantic -o/dev/null xx.cpp constexpr int b = "" == ""; xx.cpp:1:25: warning: comparison with string literal results in unspecified behavior [-Waddress] constexpr int b = "" == ""; ^~