All pre sync integration tests running

Author: swamishiju

integration_tests/CMakeLists.txt

@@ -567,7 +567,7 @@ RUN(NAME test_tuple_01       LABELS cpython llvm llvm_jit) # renable c
 RUN(NAME test_tuple_03       LABELS cpython llvm llvm_jit) # renable c
 RUN(NAME test_tuple_04       LABELS cpython llvm llvm_jit) # renable c
 RUN(NAME test_tuple_concat   LABELS cpython llvm llvm_jit) 
-# RUN(NAME test_tuple_nested   LABELS cpython llvm llvm_jit) # post sync
+RUN(NAME test_tuple_nested   LABELS cpython llvm llvm_jit)
 RUN(NAME test_const_dict     LABELS cpython llvm llvm_jit) 
 # RUN(NAME test_params         LABELS cpython llvm llvm_jit NOFAST)
 RUN(NAME test_dict_01        LABELS cpython llvm llvm_jit c) 
@@ -628,8 +628,8 @@ RUN(NAME elemental_12        LABELS cpython llvm llvm_jit c NOFAST)
 RUN(NAME elemental_13        LABELS cpython llvm llvm_jit c NOFAST)
 RUN(NAME test_random         LABELS cpython llvm llvm_jit NOFAST)
 RUN(NAME test_random_02         LABELS cpython llvm llvm_jit NOFAST)
-# RUN(NAME test_os             LABELS cpython llvm llvm_jit NOFAST) # renable c  # post sync
-# RUN(NAME test_builtin        LABELS cpython llvm llvm_jit) # renable c  # post sync 
+RUN(NAME test_os             LABELS cpython llvm llvm_jit NOFAST) # renable c  
+RUN(NAME test_builtin        LABELS cpython llvm llvm_jit) # renable c  
 RUN(NAME test_builtin_abs    LABELS cpython llvm llvm_jit c)
 # RUN(NAME test_builtin_bool   LABELS cpython llvm llvm_jit c)
 # RUN(NAME test_builtin_pow    LABELS cpython llvm llvm_jit c EXTRA_ARGS --no-warnings)

libasr

@@ -5709,6 +5709,14 @@ class BodyVisitor : public CommonVisitor<BodyVisitor> {
                     std::string var_name = std::string(v->m_name);
                     throw SemanticError("Only Class constructor is allowed in the object assignment for now", target->base.loc);
                 }
+
+                if (ASR::is_a<ASR::String_t>(*v->m_type)){
+                    ASR::String_t *str_type1 = ASR::down_cast<ASR::String_t>(v->m_type),
+                                  *str_type2 = ASR::down_cast<ASR::String_t>(value_type);
+                    int64_t l1 =  ((ASR::IntegerConstant_t *)str_type1->m_len)->m_n,
+                            l2 =  ((ASR::IntegerConstant_t *)str_type2->m_len)->m_n;
+                    ((ASR::IntegerConstant_t *)str_type1->m_len)->m_n = l1>l2?l1:l2;
+                }
             }
             tmp_vec.push_back(ASR::make_Assignment_t(al, x.base.base.loc, target, tmp_value,
                                     overloaded, false));