No functionality change. Use unreachable in getCUOffset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176963 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 2da0bb3..b169602 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1889,13 +1889,15 @@
/// For a given compile unit DIE, returns offset from beginning of debug info.
unsigned DwarfUnits::getCUOffset(DIE *Die) {
+ assert(Die->getTag() == dwarf::DW_TAG_compile_unit &&
+ "Input DIE should be compile unit in getCUOffset.");
for (SmallVector<CompileUnit *, 1>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
CompileUnit *TheCU = *I;
if (TheCU->getCUDie() == Die)
return TheCU->getDebugInfoOffset();
}
- return 0;
+ llvm_unreachable("The compile unit DIE should belong to CUs in DwarfUnits.");
}
// Emit the debug info section.
