[OPENMP50]Allow use of array shaping expression in a list.

Need to allow arrayshaping expression in a list of expressions, so use
ParseAssignmentExpression() when try to parse the base of the shaping
operation.

Author: alexey-bataev

clang/lib/Parse/ParseExpr.cpp

@@ -3001,7 +3001,7 @@ Parser::ParseParenExpression(ParenParseOption &ExprType, bool stopIfCastExpr,
     // Match the ')'.
     T.consumeClose();
     RParenLoc = T.getCloseLocation();
-    Result = Actions.CorrectDelayedTyposInExpr(ParseExpression());
+    Result = Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
     if (ErrorFound) {
       Result = ExprError();
     } else if (!Result.isInvalid()) {

clang/test/OpenMP/task_ast_print.cpp

@@ -164,8 +164,8 @@ int main(int argc, char **argv) {
 #pragma omp threadprivate(a)
   Enum ee;
 // CHECK: Enum ee;
-#pragma omp task untied mergeable depend(out:argv[:a][1], (arr)[0:],([argc][10])argv) if(task: argc > 0) priority(f) depend(depobj:y)
-  // CHECK-NEXT: #pragma omp task untied mergeable depend(out : argv[:a][1],(arr)[0:],([argc][10])argv) if(task: argc > 0) priority(f) depend(depobj : y)
+#pragma omp task untied mergeable depend(out:argv[:a][1], (arr)[0:],([argc][10])argv,b) if(task: argc > 0) priority(f) depend(depobj:y)
+  // CHECK-NEXT: #pragma omp task untied mergeable depend(out : argv[:a][1],(arr)[0:],([argc][10])argv,b) if(task: argc > 0) priority(f) depend(depobj : y)
   a = 2;
 // CHECK-NEXT: a = 2;
 #pragma omp taskgroup task_reduction(min: arr1)