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Hello, I have a fix for Bug17623 (http://llvm.org/bugs/show_bug.cgi?id=17623) but I am not sure how best to install a regression test. The commands I use to run the test are (approximately) $LLVM/clang -flto -O2 -o BUG.o -c BUG.c $LLVM/llvm-lto -exported-symbol=main -o lto.o BUG.o $LLVM/clang -o bug lto.o ./bug Where the failing behavior is to seg fault and corrected behavior is to run to