[Clang][OpenMP] fixed crash due to invalid binary expression in checking atomic semantics (#71480)

This PR fixes https://github.com/llvm/llvm-project/issues/69069 .

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 1bd34f7..e05fa54 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -11605,6 +11605,9 @@ class OpenMPAtomicUpdateChecker {
     /// RHS binary operation does not have reference to the updated LHS
     /// part.
     NotAnUpdateExpression,
+    /// An expression contains semantical error not related to
+    /// 'omp atomic [update]'
+    NotAValidExpression,
     /// No errors is found.
     NoError
   };
@@ -11782,6 +11785,10 @@ bool OpenMPAtomicUpdateChecker::checkStatement(Stmt *S, unsigned DiagId,
         ErrorFound = NotABinaryOrUnaryExpression;
         NoteLoc = ErrorLoc = AtomicBody->getExprLoc();
         NoteRange = ErrorRange = AtomicBody->getSourceRange();
+      } else if (AtomicBody->containsErrors()) {
+        ErrorFound = NotAValidExpression;
+        NoteLoc = ErrorLoc = AtomicBody->getExprLoc();
+        NoteRange = ErrorRange = AtomicBody->getSourceRange();
       }
     } else {
       ErrorFound = NotAScalarType;