Comment 2 for bug 1642109

not reproducible:

$ g++ -finline-functions -m64 -O3 -c -g -MMD -MP -MF "main.o.d" -o main.o main.cpp
main.cpp: In function 'void p(AV)':
main.cpp:80:6: note: The ABI for passing parameters with 32-byte alignment has changed in GCC 4.6
 void p(union AV a) {
      ^