[clang] [analyzer] Untangle subcheckers of CStringChecker (PR #186802)

[Endre Fülöp via cfe-commits]

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@@ -176,6 +215,8 @@ class DerivedVirtual : public BaseVirtual {
 #ifdef SUPPRESS_OUT_OF_BOUND
 void memset8_virtual_inheritance_field() {
   DerivedVirtual d;
+  // FIXME: The analyzer should stop analysis after memset. The argument to
+  // sizeof should be Derived::b_mem.
   memset(&d.b_mem, 0, sizeof(Derived));
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gamesh411 wrote:

I have provided more info with the updated comments for these kinds of erroneous uses as well.

https://github.com/llvm/llvm-project/pull/186802