[clang] [clang][analyzer] Add StoreToImmutable checker (PR #150417)

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+// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.core.StoreToImmutable -std=c++14 -verify %s
+
+// expected-no-diagnostics
+
+// In C++14 and before, when initializing a lambda, the statement given in the checkBind callback is not the whole DeclExpr, but the CXXConstructExpr of the lambda object.
+// FIXME: Once the API of checkBind provides more information about the statement, the checker should be simplified, and this this test case will no longer be a cornercase in the checker.
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gamesh411 wrote:

Done

https://github.com/llvm/llvm-project/pull/150417