From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- build/clang-plugin/KnownLiveChecker.cpp | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 build/clang-plugin/KnownLiveChecker.cpp (limited to 'build/clang-plugin/KnownLiveChecker.cpp') diff --git a/build/clang-plugin/KnownLiveChecker.cpp b/build/clang-plugin/KnownLiveChecker.cpp new file mode 100644 index 0000000000..be0c3739ec --- /dev/null +++ b/build/clang-plugin/KnownLiveChecker.cpp @@ -0,0 +1,35 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "KnownLiveChecker.h" +#include "CustomMatchers.h" + +void KnownLiveChecker::registerMatchers(MatchFinder *AstMatcher) { + // Note that this cannot catch mutations after pass-by-reference, and thus no + // error for cycle collection macros. + + auto KnownLiveLHS = hasLHS(memberExpr(hasKnownLiveAnnotation()).bind("lhs")); + auto ForGeneralFunctions = forFunction( + functionDecl(unless(anyOf(cxxConstructorDecl(), cxxDestructorDecl()))) + .bind("func")); + + auto Matcher = + allOf(isAssignmentOperator(), KnownLiveLHS, ForGeneralFunctions); + + AstMatcher->addMatcher(binaryOperator(Matcher), this); + AstMatcher->addMatcher(cxxOperatorCallExpr(Matcher), this); +} + +void KnownLiveChecker::check(const MatchFinder::MatchResult &Result) { + const char *Error = "MOZ_KNOWN_LIVE members can only be modified by " + "constructors and destructors"; + + if (const MemberExpr *Expr = Result.Nodes.getNodeAs("lhs")) { + diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error); + } + if (const CXXOperatorCallExpr *Expr = + Result.Nodes.getNodeAs("lhs")) { + diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error); + } +} -- cgit v1.2.3