Fix crash in DebugInfoFinder when adding a module with forward declared composite type
The testcase that is included in the patch caused a crash when doing DebugInfoFinder::processModule
on the module due to DCT->getElements() returning nullptr in DebugInfoFinder::processType.
By doing "DCT->getElements()" instead of "DCT->getElements()->operands()" one gets a DIArray
instead of a raw MDTuple. The former has code to handle null as a 0-element array and
therefore avoids the crash.
Differential Revision: http://reviews.llvm.org/D9008
llvm-svn: 234875
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index d289f80..ca7a4f4 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -182,7 +182,7 @@
processType(Ref.resolve(TypeIdentifierMap));
return;
}
- for (Metadata *D : DCT->getElements()->operands()) {
+ for (Metadata *D : DCT->getElements()) {
if (DIType T = dyn_cast<MDType>(D))
processType(T);
else if (DISubprogram SP = dyn_cast<MDSubprogram>(D))