zygoloid wrote: It looks like GCC changed their behavior in version 9 onwards. In [prior versions](https://godbolt.org/z/85dvbe1rG), a `continue` in the condition or increment of a `for` loop would branch to the continue block of that `for` loop. But, only in C++ (in C it branches to the continue block of the outer loop), and only if there *is* an outer loop (otherwise it gets rejected early).
Prior to C++11, various major libraries (including both boost and Qt, as I recall) provided foreach macros that relied on this behavior, so Clang had to follow it. And instead of following it only in C++ and only when there's an enclosing loop, we chose to behave more consistently and allow it in both C and C++, regardless of whether there's an enclosing loop. It looks like GCC 9 onwards finally converged on the more sensible behavior -- that `break` and `continue` in a loop increment / condition are not in the scope of that loop. I guess we should follow suit, but this is a breaking change for code that old GCC and Clang supported. https://github.com/llvm/llvm-project/pull/152606 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
