Jan Včelák · d5bcfc0a · 2cb28f98
--- a/src/contrib/wire_ctx.h
+++ b/src/contrib/wire_ctx.h
 /*!
 * \brief Check the context if reading is possible.
 */
-static inline bool wire_ctx_can_read(wire_ctx_t *ctx, size_t size)
+static inline int wire_ctx_can_read(wire_ctx_t *ctx, size_t size)
 {
 	assert(ctx);

-	return ctx->error == KNOT_EOK && wire_ctx_available(ctx) >= size;
+	if (ctx->error) {
--- a/src/contrib/wire_ctx.h
+++ b/src/contrib/wire_ctx.h
 	assert(dst);
 	assert(src);

-	if (dst->error != KNOT_EOK || src->error != KNOT_EOK) {
+	if (size == 0 || dst->error != KNOT_EOK) {
 		return;
 	}

-	if (size == 0) {
+	if (wire_ctx_can_read(src, size) != KNOT_EOK) {