Don't forget to subtract materialization instructions when computing the offset of the frame pointe…

runtime/vm/stack_frame.cc

Index: runtime/vm/stack_frame.cc
diff --git a/runtime/vm/stack_frame.cc b/runtime/vm/stack_frame.cc
index 76b4370419c6ea496a21d1d34925d92894478a51..7c1e5e74f2b643dfa3423a60217d2cdfcdded829 100644
--- a/runtime/vm/stack_frame.cc
+++ b/runtime/vm/stack_frame.cc
@@ -365,6 +365,7 @@ EntryFrame* StackFrameIterator::NextEntryFrame() {
 
 InlinedFunctionsIterator::InlinedFunctionsIterator(const Code& code, uword pc)
   : index_(0),
+    num_materializations_(0),
     code_(Code::Handle(code.raw())),
     deopt_info_(DeoptInfo::Handle()),
     function_(Function::Handle()),
@@ -386,6 +387,7 @@ InlinedFunctionsIterator::InlinedFunctionsIterator(const Code& code, uword pc)
     const Array& deopt_table = Array::Handle(code_.deopt_info_array());
     ASSERT(!deopt_table.IsNull());
     deopt_info_.ToInstructions(deopt_table, &deopt_instructions_);
+    num_materializations_ = deopt_info_.NumMaterializations();
     object_table_ = code_.object_table();
     Advance();
   }
@@ -426,7 +428,7 @@ intptr_t InlinedFunctionsIterator::GetDeoptFpOffset() const {
        index++) {
     DeoptInstr* deopt_instr = deopt_instructions_[index];
     if (deopt_instr->kind() == DeoptInstr::kCallerFp) {
-      return index;
+      return (index - num_materializations_);
     }
   }
   UNREACHABLE();