codegen: fix type bug in dereferenceable_size (#24553)

fix #24511
JuliaLang · Nov 9, 2017 · 26eb512 · 26eb512 · nanosoldier · Nov 10, 2017
1 parent 27665e8
commit 26eb512
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/cgutils.cpp b/src/cgutils.cpp
@@ -335,9 +335,11 @@ static size_t dereferenceable_size(jl_value_t *jt)
     if (jl_is_array_type(jt)) {
         // Array has at least this much data
         return sizeof(jl_array_t);
-    } else if (((jl_datatype_t*)jt)->layout) {
+    }
+    else if (jl_is_datatype(jt) && ((jl_datatype_t*)jt)->layout) {
         return jl_datatype_size(jt);
-    } else {
+    }
+    else {
         return 0;
     }
 }