Add a test for an error message for bindc

Author: certik

tests/errors/bindc_10e.py

@@ -0,0 +1,31 @@
+from lpython import (i64, i16, CPtr, c_p_pointer, Pointer, sizeof, packed,
+        dataclass, ccallable, ccall, i32)
+
+@ccall
+def _lfortran_malloc(size: i32) -> CPtr:
+    pass
+
+
+def alloc(buf_size:i64) -> CPtr:
+    return _lfortran_malloc(i32(buf_size))
+
+
+@packed
+@dataclass
+class S:
+    a: i16
+    b: i64
+
+
+def main():
+    p1: CPtr = alloc(sizeof(S))
+    print(p1)
+    p2: Pointer[S] = c_p_pointer(p1, S)
+    p2.a = i16(5)
+    p2.b = i64(4)
+    print(p2.a, p2.b)
+    assert p2.a == i16(5)
+    assert p2.b == i64(4)
+
+
+main()

tests/tests.toml

@@ -1151,6 +1151,10 @@ asr = true
 filename = "errors/bindc_04.py"
 asr = true
 
+[[test]]
+filename = "errors/bindc_10e.py"
+asr = true
+
 [[test]]
 filename = "errors/cptr_01.py"
 asr = true