[clang] [clang][analyzer] Add taintedness to argv (PR #178054)

[Donát Nagy via cfe-commits]

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@@ -827,8 +831,40 @@ void GenericTaintChecker::initTaintRules(CheckerContext &C) const {
                             std::make_move_iterator(Rules.end()));
 }
 
+// The incoming parameters of the main function get tainted
+// if the program called in an untrusted environment.
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NagyDonat wrote:

As we discussed in person, you decided to only apply taint to `argv`, because putting taint on `argc` wouldn't be useful in practice. I support this decision, but please update the comments accordingly.

https://github.com/llvm/llvm-project/pull/178054