When that SO answer was written, it was not a guarantee. You can now get a guarantee by using non-standard compiler attributes: https://clang.llvm.org/docs/At

When that SO answer was written, it was not a guarantee. You can now get a guarantee by using non-standard compiler attributes: https://clang.llvm.org/docs/AttributeReference.html#musttail https://clang.llvm.org/docs/AttributeReference.html#musttail https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#index-musttail-statement-attribute https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html...