fix

Author: daveMueller

src/coverlet.core/Symbols/CecilSymbolHelper.cs

@@ -497,8 +497,11 @@ static bool CheckForAsyncEnumerator(List<Instruction> instructions, Instruction
                     (instructions[currentIndex - 2].OpCode == OpCodes.Ldarg ||
                      instructions[currentIndex - 2].OpCode == OpCodes.Ldarg_0) &&
                     instructions[currentIndex - 1].OpCode == OpCodes.Ldfld &&
-                    instructions[currentIndex - 1].Operand is FieldDefinition field &&
-                    IsCompilerGenerated(field) && field.FieldType.FullName.StartsWith("System.Collections.Generic.IAsyncEnumerator"))
+                    (
+                        (instructions[currentIndex - 1].Operand is FieldDefinition field && IsCompilerGenerated(field) && field.FieldType.FullName.StartsWith("System.Collections.Generic.IAsyncEnumerator")) ||
+                        (instructions[currentIndex - 1].Operand is FieldReference fieldRef && IsCompilerGenerated(fieldRef.Resolve()) && fieldRef.FieldType.FullName.StartsWith("System.Collections.Generic.IAsyncEnumerator"))
+                    )
+                )
                 {
                     return true;
                 }
@@ -540,8 +543,9 @@ static bool CheckIfExceptionThrown(List<Instruction> instructions, Instruction i
                 for (int i = currentIndex - 1; i >= minFieldIndex; --i)
                 {
                     if (instructions[i].OpCode == OpCodes.Ldfld &&
-                        instructions[i].Operand is FieldDefinition field &&
-                        IsCompilerGenerated(field) && field.FieldType.FullName == "System.Object")
+                        ((instructions[i].Operand is FieldDefinition field && IsCompilerGenerated(field) && field.FieldType.FullName == "System.Object") ||
+                        (instructions[i].Operand is FieldReference fieldRef && IsCompilerGenerated(fieldRef.Resolve()) && fieldRef.FieldType.FullName == "System.Object"))
+                        )
                     {
                         // We expect the call to GetResult() to be no more than four
                         // instructions before the loading of the field's value.