Hi Clang-users! What are the expectations for the -Wunsequenced warning in Clang with C11?
My understanding was the following expression would be unsequenced according to the spec, but clang doesn't give me a warning: ((*p = 3) + (*q = 4)) Is clang only going to warn if it knows p and q definitely alias each other here? I also tried the expression: ((*p = 3) + (*p = 4)) Which also gave no warnings, despite p aliasing itself. Is the warning based on a heuristic of whether the unsequenced behaviour will be observable, or on whether the two assignments ever alias, or will it only warn if it knows two side-effecting expressions are definitely unsequenced? Maybe this kind of analysis isn't for clang, and instead is for the clang static analyser. Thank you in advance! Sam _______________________________________________ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
