https://github.com/Serafean created https://github.com/llvm/llvm-project/pull/182247
When clang_getUnaryOperatorKindSpelling() is called with CXUnaryOperator_Invalid as argument, UnaryOperator::getOpcodeStr() gets called with an invalid Opcode of -1, leading to a crash. Fix it by checking for the last valid opcode as is done in clang_getBinaryOperatorKindSpelling(). Do the same for clang_getBinaryOperatorKindSpelling(), as its logic is the same. >From fc04104d2e3abde6412405eaa9e9b45328513024 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Bedn=C3=A1r?= <[email protected]> Date: Wed, 18 Feb 2026 18:12:59 +0100 Subject: [PATCH] Fix crash in clang_getUnaryOperatorKindSpelling() When clang_getUnaryOperatorKindSpelling() is called with CXUnaryOperator_Invalid as argument, UnaryOperator::getOpcodeStr() gets called with an invalid Opcode of -1, leading to a crash. Fix it by checking for the last valid opcode as is done in clang_getBinaryOperatorKindSpelling(). Do the same for clang_getBinaryOperatorKindSpelling(), as its logic is the same. --- clang/include/clang-c/Index.h | 3 ++- clang/tools/libclang/CIndex.cpp | 5 ++++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h index f13d9c9307b40..203634c80d82a 100644 --- a/clang/include/clang-c/Index.h +++ b/clang/include/clang-c/Index.h @@ -6932,7 +6932,8 @@ enum CXUnaryOperatorKind { /** __extension__ marker operator. */ CXUnaryOperator_Extension, /** C++ co_await operator. */ - CXUnaryOperator_Coawait + CXUnaryOperator_Coawait, + CXUnaryOperator_Last = CXUnaryOperator_Coawait }; /** diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp index 15eec87652451..c81a3cf51522d 100644 --- a/clang/tools/libclang/CIndex.cpp +++ b/clang/tools/libclang/CIndex.cpp @@ -10173,7 +10173,7 @@ cxindex::Logger::~Logger() { } CXString clang_getBinaryOperatorKindSpelling(enum CXBinaryOperatorKind kind) { - if (kind > CXBinaryOperator_Last) + if (kind <= CXBinaryOperator_Invalid && kind > CXBinaryOperator_Last) return cxstring::createEmpty(); return cxstring::createDup( @@ -10195,6 +10195,9 @@ enum CXBinaryOperatorKind clang_getCursorBinaryOperatorKind(CXCursor cursor) { } CXString clang_getUnaryOperatorKindSpelling(enum CXUnaryOperatorKind kind) { + if (kind <= CXUnaryOperator_Invalid && kind > CXUnaryOperator_Last) + return cxstring::createEmpty(); + return cxstring::createRef( UnaryOperator::getOpcodeStr(static_cast<UnaryOperatorKind>(kind - 1))); } _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
