diff --git a/integration_tests/CMakeLists.txt b/integration_tests/CMakeLists.txt
index 6ef74d6882..90dd6d0c25 100644
--- a/integration_tests/CMakeLists.txt
+++ b/integration_tests/CMakeLists.txt
@@ -649,8 +649,8 @@ RUN(NAME test_builtin_round  LABELS cpython llvm llvm_jit c)
 # RUN(NAME test_math_03        LABELS llvm llvm_jit)               #1595: TODO: Test using CPython (3.11 recommended)
 # RUN(NAME test_pass_compare   LABELS cpython llvm llvm_jit) # renable c # post sync
 RUN(NAME test_c_interop_01   LABELS cpython llvm llvm_jit c)
-# RUN(NAME test_c_interop_02   LABELS cpython llvm c
-#         EXTRAFILES test_c_interop_02b.c)
+RUN(NAME test_c_interop_02   LABELS llvm
+        EXTRAFILES test_c_interop_02b.c) # renable c (needs physical cast), cpython (lenght assert error)
 RUN(NAME test_c_interop_03   LABELS cpython llvm c
         EXTRAFILES test_c_interop_03b.c)
 # RUN(NAME test_c_interop_04   LABELS cpython llvm llvm_jit c
diff --git a/integration_tests/test_c_interop_02b.c b/integration_tests/test_c_interop_02b.c
index 2dfde29304..8961f45666 100644
--- a/integration_tests/test_c_interop_02b.c
+++ b/integration_tests/test_c_interop_02b.c
@@ -26,6 +26,6 @@ int8_t f_i8_i8(int8_t x) {
     return x+1;
 }
 
-int32_t f_str_i32(char *x) {
-    return strlen(x);
+int32_t f_str_i32(string_descriptor x) {
+    return x.size;
 }
diff --git a/integration_tests/test_c_interop_02b.h b/integration_tests/test_c_interop_02b.h
index 331f8a9103..772f929da5 100644
--- a/integration_tests/test_c_interop_02b.h
+++ b/integration_tests/test_c_interop_02b.h
@@ -3,6 +3,11 @@
 
 #include <stdint.h>
 
+typedef struct {
+    char* x;
+    int64_t size;
+    int64_t capacity;
+} string_descriptor;
 
 double  f_f64_f64(double  x);
 float   f_f32_f32(float   x);
@@ -10,7 +15,7 @@ int64_t f_i64_i64(int64_t x);
 int32_t f_i32_i32(int32_t x);
 int16_t f_i16_i16(int16_t x);
 int8_t  f_i8_i8  (int8_t  x);
-int32_t f_str_i32(char   *x);
+int32_t f_str_i32(string_descriptor x);
 
 
 #endif // TEST_C_INTEROP_02B
diff --git a/libasr b/libasr
index 423e6afdd1..2e421b2537 160000
--- a/libasr
+++ b/libasr
@@ -1 +1 @@
-Subproject commit 423e6afdd1c95100e381c1842695af62c27c7537
+Subproject commit 2e421b253765877fab5e8cfc82df4a778aaf8284