we have to replace calloc with talloc_zero_size() to ensure initialization
diff --git a/asn1c-talloc.patch b/asn1c-talloc.patch
index f0a32b0..909772f 100644
--- a/asn1c-talloc.patch
+++ b/asn1c-talloc.patch
@@ -21,7 +21,7 @@
-#define FREEMEM(ptr) free(ptr)
+extern void *talloc_asn1_ctx;
+
-+#define CALLOC(nmemb, size) talloc_size(talloc_asn1_ctx, (nmemb) * (size))
++#define CALLOC(nmemb, size) talloc_zero_size(talloc_asn1_ctx, (nmemb) * (size))
+#define MALLOC(size) talloc_size(talloc_asn1_ctx, size)
+#define REALLOC(oldptr, size) talloc_realloc_size(talloc_asn1_ctx, oldptr, size)
+#define FREEMEM(ptr) talloc_free(ptr)
diff --git a/include/asn1c/asn_internal.h b/include/asn1c/asn_internal.h
index 47f9930..c03dc6b 100644
--- a/include/asn1c/asn_internal.h
+++ b/include/asn1c/asn_internal.h
@@ -27,7 +27,7 @@
extern void *talloc_asn1_ctx;
-#define CALLOC(nmemb, size) talloc_size(talloc_asn1_ctx, (nmemb) * (size))
+#define CALLOC(nmemb, size) talloc_zero_size(talloc_asn1_ctx, (nmemb) * (size))
#define MALLOC(size) talloc_size(talloc_asn1_ctx, size)
#define REALLOC(oldptr, size) talloc_realloc_size(talloc_asn1_ctx, oldptr, size)
#define FREEMEM(ptr) talloc_free(ptr)