disable warning by default

Author: usx95

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -10233,10 +10233,10 @@ def warn_dangling_pointer_assignment : Warning<
    InGroup<DanglingAssignment>;
 def warn_dangling_reference_captured : Warning<
    "object whose reference is captured by '%0' will be destroyed at the end of "
-   "the full-expression">, InGroup<DanglingCapture>;
+   "the full-expression">, InGroup<DanglingCapture>, DefaultIgnore;
 def warn_dangling_reference_captured_by_unknown : Warning<
    "object whose reference is captured will be destroyed at the end of "
-   "the full-expression">, InGroup<DanglingCapture>;
+   "the full-expression">, InGroup<DanglingCapture>, DefaultIgnore;
 
 // For non-floating point, expressions of the form x == x or x != x
 // should result in a warning, since these always evaluate to a constant.

clang/test/Sema/warn-lifetime-analysis-capture-by.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 --std=c++20 -fsyntax-only -verify %s
+// RUN: %clang_cc1 --std=c++20 -fsyntax-only -verify -Wdangling-capture %s
 
 #include "Inputs/lifetime-analysis.h"