https://issues.dlang.org/show_bug.cgi?id=16243
Martin Nowak <c...@dawg.eu> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|wrong argument passed with |wrong C++ argument passing |empty struct and 6 integers |with empty struct and 6 | |integers --- Comment #1 from Martin Nowak <c...@dawg.eu> --- Complete test case, also requires a C++ roundtrip. C++ compiler is. ---- Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn) Target: x86_64-apple-darwin12.2.0 Thread model: posix ---- cat > cpp.cc << CODE struct S13956 { }; void check13956(S13956 arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6); void func13956(S13956 arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6) { check13956(arg0, arg1, arg2, arg3, arg4, arg5, arg6); } CODE cat > bug.d << CODE struct S13956 { } extern(C++) void func13956(S13956 arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6) { check13956(arg0, arg1, arg2, arg3, arg4, arg5, arg6); } extern(C++) void check13956(S13956 arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6) { assert(arg0 == S13956()); assert(arg1 == 1); assert(arg2 == 2); assert(arg3 == 3); assert(arg4 == 4); assert(arg5 == 5); assert(arg6 == 6); // fails on OSX 32-bit } void main() { func13956(S13956(), 1, 2, 3, 4, 5, 6); } CODE c++ -m32 -c cpp.cc dmd -m32 cpp.o -run bug --