Comment # 2 on bug 1067478 from Bernhard Wiedemann

I did clang -E and reduced the result to this standalone minimal reproducer:


cat > test.m <<EOF
typedef id (*IMP)(id, ...);
static Class c1;
void f1(void)
{
   @selector(f2);
   IMP v1 = @selector(f3);
}
EOF
for i in $(seq 15) ; do 
  clang -c test.m -o /dev/stdout 2>/dev/null | md5sum ; done |
  sort | uniq -c | wc -l


If you don't know how to fix, I'd like some help filing this upstream.