Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lld/test/COFF/Inputs/pdb-diff.cpp

@@ -0,0 +1,10 @@
+// Build with cl:
+//    cl.exe /Z7 pdb-diff.cpp /link /debug /pdb:pdb-diff-cl.pdb
+//           /nodefaultlib /entry:main
+// Build with lld (after running the above cl command):
+//    lld-link.exe /debug /pdb:pdb-diff-lld.pdb /nodefaultlib
+//                 /entry:main pdb-diff.obj
+
+void *__purecall = 0;
+
+int main() { return 42; }