Added empty visit_For function in the SymbolTableVisitor class (#…

…1509)

integration_tests/CMakeLists.txt

@@ -256,6 +256,7 @@ RUN(NAME expr_14             LABELS cpython llvm c)
 RUN(NAME loop_01             LABELS cpython llvm c)
 RUN(NAME loop_02             LABELS cpython llvm c wasm wasm_x86 wasm_x64)
 RUN(NAME loop_03             LABELS cpython llvm c wasm wasm_x64)
+RUN(NAME loop_04             LABELS cpython llvm)
 RUN(NAME if_01               LABELS cpython llvm c wasm wasm_x86 wasm_x64)
 RUN(NAME if_02               LABELS cpython llvm c wasm wasm_x86 wasm_x64)
 RUN(NAME print_02            LABELS cpython llvm c)

integration_tests/loop_04.py

@@ -0,0 +1,6 @@
+from ltypes import i32
+j: i32
+i: i32
+for i in range(5):
+    j = i
+    print("j: ", j)

src/lpython/semantics/python_ast_to_asr.cpp

@@ -3787,6 +3787,10 @@ class SymbolTableVisitor : public CommonVisitor<SymbolTableVisitor> {
     void visit_Expr(const AST::Expr_t &/*x*/) {
         // We skip this in the SymbolTable visitor, but visit it in the BodyVisitor
     }
+
+    void visit_For(const AST::For_t &/*x*/) {
+        // We skip this in the SymbolTable visitor, but visit it in the BodyVisitor
+    }
 };
 
 Result<ASR::asr_t*> symbol_table_visitor(Allocator &al, LocationManager &lm, const AST::Module_t &ast,