Fix problem linking in a method prototype when a method body exists
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@965 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/Linker.cpp b/lib/Transforms/Utils/Linker.cpp
index 33acbb4..55023b8 100644
--- a/lib/Transforms/Utils/Linker.cpp
+++ b/lib/Transforms/Utils/Linker.cpp
@@ -294,12 +294,20 @@
// Loop over all of the methods in the src module, mapping them over as we go
//
for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
- const Method *SM = *I; // Source Method
- Method *DM = cast<Method>(ValueMap[SM]); // Destination method
+ const Method *SM = *I; // Source Method
+ if (!SM->isExternal()) { // No body if method is external
+ Method *DM = cast<Method>(ValueMap[SM]); // Destination method
- assert(DM && DM->isExternal() && "LinkMethodProtos failed!");
- if (!SM->isExternal()) // External methods are already done
+ // DM not external SM external?
+ if (!DM->isExternal()) {
+ if (Err)
+ *Err = "Method '" + (SM->hasName() ? SM->getName() : string("")) +
+ "' body multiply defined!";
+ return true;
+ }
+
if (LinkMethodBody(DM, SM, ValueMap, Err)) return true;
+ }
}
return false;
}