vsk added a comment. The "Cannot represent a difference across sections" error is almost certainly related to -fsanitize=function. Time permitting, could you file a separate PR for that and attach the IR? It'd be great to know whether the issue reproduces without coroutines involved.
Also, could you check in a simple test (something along the lines of what you posted to llvm-dev)? You can just pass '-emit-llvm -fcoroutines -fsanitize=null' and check that the string '__ubsan' doesn't appear. ================ Comment at: lib/CodeGen/CodeGenFunction.cpp:1307 + if (Body && Body->getStmtClass() == Stmt::CoroutineBodyStmtClass) + SanOpts.clear(); + ---------------- The suppression should live right next to the logic which handles no_sanitize attributes, in CGF::StartFunction. In general you can end up in CGF::StartFunction without the immediate caller being CGF::GenerateCode. Repository: rC Clang https://reviews.llvm.org/D44672 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
