[PATCH] D18243: [ASTMatchers] Existing matcher hasAnyArgument fixed

[Balogh, Ádám via cfe-commits]

baloghadamsoftware created this revision.
baloghadamsoftware added reviewers: klimek, sbenza.
baloghadamsoftware added subscribers: cfe-commits, xazax.hun.
Herald added a subscriber: klimek.

A checker (will be uploaded after this patch) needs to check implicit casts. The checker needs matcher hasAnyArgument but it ignores implicit casts and parenthesized expressions which disables checking of implicit casts for arguments in the checker. However the documentation of the matcher contains a FIXME that this should be removed once separate matchers for ignoring implicit casts and parenthesized expressions are ready. Since these matchers were already there the fix could be executed. Only one Clang checker was affected which was also fixed (ignoreParenImpCasts added) and is separately uploaded. Third party checkers (not in the Clang repository) may be affected by this fix so the fix must be emphasized in the release notes.

http://reviews.llvm.org/D18243

Files:
  include/clang/ASTMatchers/ASTMatchers.h

Index: include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchers.h
+++ include/clang/ASTMatchers/ASTMatchers.h
@@ -2859,18 +2859,13 @@
 ///   matches x(1, y, 42)
 /// with hasAnyArgument(...)
 ///   matching y
-///
-/// FIXME: Currently this will ignore parentheses and implicit casts on
-/// the argument before applying the inner matcher. We'll want to remove
-/// this to allow for greater control by the user once \c ignoreImplicit()
-/// has been implemented.
 AST_POLYMORPHIC_MATCHER_P(hasAnyArgument,
                           AST_POLYMORPHIC_SUPPORTED_TYPES(CallExpr,
                                                           CXXConstructExpr),
                           internal::Matcher<Expr>, InnerMatcher) {
   for (const Expr *Arg : Node.arguments()) {
     BoundNodesTreeBuilder Result(*Builder);
-    if (InnerMatcher.matches(*Arg->IgnoreParenImpCasts(), Finder, &Result)) {
+    if (InnerMatcher.matches(*Arg, Finder, &Result)) {
       *Builder = std::move(Result);
       return true;
     }


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