[lldb] Fix undefined behavior in DWARFExpressionTest

JDevlieghere · JDevlieghere · commit 87404eaf0445 · 2025-08-06T14:32:41.000-07:00
RegisterInfo is a trivial class and doesn't default initialize its
members. Thanks Alex for getting to the bottom of this.
diff --git a/lldb/unittests/Expression/DWARFExpressionTest.cpp b/lldb/unittests/Expression/DWARFExpressionTest.cpp
@@ -125,8 +125,8 @@ class MockRegisterContext : public RegisterContext {
   }
 
 private:
-  RegisterInfo m_reg_info;
-  RegisterValue m_reg_value;
+  RegisterInfo m_reg_info{};
+  RegisterValue m_reg_value{};
 };
 } // namespace
 

Original file line number	Diff line number	Diff line change
`@@ -125,8 +125,8 @@ class MockRegisterContext : public RegisterContext {`
`125`	`125`	`}`
`126`	`126`
`127`	`127`	`private:`
`128`		`- RegisterInfo m_reg_info;`
`129`		`- RegisterValue m_reg_value;`
	`128`	`+ RegisterInfo m_reg_info{};`
	`129`	`+ RegisterValue m_reg_value{};`
`130`	`130`	`};`
`131`	`131`	`} // namespace`
`132`	`132`