void Verifier::visitDISubprogram(const DISubprogram &N) {
Assert(N.getTag() == dwarf::DW_TAG_subprogram, "invalid tag", &N);
Assert(isScopeRef(N, N.getRawScope()), "invalid scope", &N, N.getRawScope());
+ if (auto *F = N.getRawFile())
+ Assert(isa<DIFile>(F), "invalid file", &N, F);
if (auto *T = N.getRawType())
Assert(isa<DISubroutineType>(T), "invalid subroutine type", &N, T);
Assert(isTypeRef(N, N.getRawContainingType()), "invalid containing type", &N,
--- /dev/null
+; RUN: not llvm-as -disable-output <%s 2>&1 | FileCheck %s
+; CHECK: assembly parsed, but does not verify
+; CHECK-NEXT: invalid file
+
+!llvm.module.flags = !{!0}
+!0 = !{i32 2, !"Debug Info Version", i32 3}
+!llvm.dbg.cu = !{!1}
+!1 = distinct !DICompileUnit(file: !2, language: DW_LANG_C99, subprograms: !{!3})
+!2 = !DIFile(filename: "file.c", directory: "/path/to/dir")
+!3 = distinct !DISubprogram(name: "blah", file: !1)