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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /build/clang-plugin/KnownLiveChecker.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | build/clang-plugin/KnownLiveChecker.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
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<MemberExpr>("lhs")) { + diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error); + } + if (const CXXOperatorCallExpr *Expr = + Result.Nodes.getNodeAs<CXXOperatorCallExpr>("lhs")) { + diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error); + } +} |