diff --git a/backend.native/tests/interop/basics/bf.kt b/backend.native/tests/interop/basics/bf.kt
index d8c7091f553..0739d4a6dc9 100644
--- a/backend.native/tests/interop/basics/bf.kt
+++ b/backend.native/tests/interop/basics/bf.kt
@@ -11,7 +11,7 @@ fun assertEquals(value1: Any?, value2: Any?) {
         throw AssertionError("Expected $value1, got $value2")
 }
 
-fun check(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E) {
+fun check(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E, x8: Boolean) {
     assertEquals(x1, s.x1)
     assertEquals(x1, getX1(s.ptr))
 
@@ -32,9 +32,12 @@ fun check(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E
 
     assertEquals(x7, s.x7)
     assertEquals(x7, getX7(s.ptr))
+
+    assertEquals(x8, s.x8)
+    assertEquals(x8, getX8(s.ptr))
 }
 
-fun assign(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E) {
+fun assign(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E, x8: Boolean) {
     s.x1 = x1
     s.x2 = x2
     s.x3 = x3
@@ -42,9 +45,11 @@ fun assign(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7:
     s.x5 = x5
     s.x6 = x6
     s.x7 = x7
+    s.x8 = x8
 }
 
-fun assignReversed(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E) {
+fun assignReversed(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E, x8: Boolean) {
+    s.x8 = x8
     s.x7 = x7
     s.x6 = x6
     s.x5 = x5
@@ -54,20 +59,20 @@ fun assignReversed(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Lo
     s.x1 = x1
 }
 
-fun test(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E) {
-    assign(s, x1, x2, x3, x4, x5, x6, x7)
-    check(s, x1, x2, x3, x4, x5, x6, x7)
+fun test(s: S, x1: Long, x2: B2, x3: UShort, x4: UInt, x5: Int, x6: Long, x7: E, x8: Boolean) {
+    assign(s, x1, x2, x3, x4, x5, x6, x7, x8)
+    check(s, x1, x2, x3, x4, x5, x6, x7, x8)
 
-    assignReversed(s, x1, x2, x3, x4, x5, x6, x7)
-    check(s, x1, x2, x3, x4, x5, x6, x7)
+    assignReversed(s, x1, x2, x3, x4, x5, x6, x7, x8)
+    check(s, x1, x2, x3, x4, x5, x6, x7, x8)
 
     // Also check with some insignificant bits modified:
 
-    assign(s, x1 + 2, x2, (x3 + 8u).toUShort(), x4 - 16u, x5 + 32, x6 + Long.MIN_VALUE, x7)
-    check(s, x1, x2, x3, x4, x5, x6, x7)
+    assign(s, x1 + 2, x2, (x3 + 8u).toUShort(), x4 - 16u, x5 + 32, x6 + Long.MIN_VALUE, x7, x8)
+    check(s, x1, x2, x3, x4, x5, x6, x7, x8)
 
-    assignReversed(s, x1 + 2, x2, (x3 + 8u).toUShort(), x4 - 16u, x5 + 32, x6 + Long.MIN_VALUE, x7)
-    check(s, x1, x2, x3, x4, x5, x6, x7)
+    assignReversed(s, x1 + 2, x2, (x3 + 8u).toUShort(), x4 - 16u, x5 + 32, x6 + Long.MIN_VALUE, x7, x8)
+    check(s, x1, x2, x3, x4, x5, x6, x7, x8)
 }
 
 fun main(args: Array<String>) {
@@ -80,6 +85,7 @@ fun main(args: Array<String>) {
                         for (x5 in intArrayOf(-16, -2, -1, 0, 5, 15))
                             for (x6 in longArrayOf(Long.MIN_VALUE/2, -1L shl 36, -325L, 0, 1L shl 48, Long.MAX_VALUE/2))
                                 for (x7 in E.values())
-                                    test(s, x1, x2, x3.toUShort(), x4, x5, x6, x7)
+                                    for (x8 in arrayOf(false, true))
+                                        test(s, x1, x2, x3.toUShort(), x4, x5, x6, x7, x8)
     }
 }
diff --git a/backend.native/tests/interop/basics/bitfields.def b/backend.native/tests/interop/basics/bitfields.def
index 4fcf1c734cb..729ab79c953 100644
--- a/backend.native/tests/interop/basics/bitfields.def
+++ b/backend.native/tests/interop/basics/bitfields.def
@@ -15,6 +15,7 @@ struct __attribute__((packed)) S {
     int x5 : 5;
     long long x6 : 63;
     enum E x7: 2;
+    _Bool x8 : 1;
 };
 
 static long long getX1(struct S* s) { return s->x1; }
@@ -24,3 +25,4 @@ static unsigned int getX4(struct S* s) { return s->x4; }
 static int getX5(struct S* s) { return s->x5; }
 static long long getX6(struct S* s) { return s->x6; }
 static enum E getX7(struct S* s) { return s->x7; }
+static _Bool getX8(struct S* s) { return s->x8; }
diff --git a/backend.native/tests/interop/basics/cstructs.def b/backend.native/tests/interop/basics/cstructs.def
index 524f1b383eb..429f787b7bf 100644
--- a/backend.native/tests/interop/basics/cstructs.def
+++ b/backend.native/tests/interop/basics/cstructs.def
@@ -19,6 +19,7 @@ struct Complex {
     enum E e;
     enum NonStrict nonStrict;
     int arr[2];
+    _Bool b;
 };
 
 struct __attribute__((packed)) Packed {
@@ -33,7 +34,8 @@ struct Complex produceComplex() {
 		    .next = 0,
 		    .e = R,
 		    .nonStrict = K,
-		    .arr = {-51, -19}
+		    .arr = {-51, -19},
+		    .b = 1
     };
     return complex;
 };
\ No newline at end of file
diff --git a/backend.native/tests/interop/basics/structs.kt b/backend.native/tests/interop/basics/structs.kt
index e5b720a0e0f..e5351c22d7b 100644
--- a/backend.native/tests/interop/basics/structs.kt
+++ b/backend.native/tests/interop/basics/structs.kt
@@ -34,6 +34,10 @@ fun main() {
         assertEquals(arr[0], 51)
         assertEquals(arr[1], 19)
 
+        assertEquals(true, b)
+        b = false
+        assertEquals(false, b)
+
         // Check that subtyping via Nothing-returning functions does not break compiler.
         assertFailsWith<NotImplementedError> {
             ui = TODO()
@@ -41,6 +45,7 @@ fun main() {
             next = TODO()
             e = TODO()
             nonStrict = TODO()
+            b = TODO()
         }
     }
     memScoped {