enforsed compilation with -W -Werror
diff --git a/skeletons/constr_CHOICE.c b/skeletons/constr_CHOICE.c
index e6d08ba..1ecbbce 100644
--- a/skeletons/constr_CHOICE.c
+++ b/skeletons/constr_CHOICE.c
@@ -11,7 +11,7 @@
* (ctx->left) indicates the number of bytes _transferred_ for the structure.
* (size) contains the number of bytes in the buffer passed.
*/
-#define LEFT ((size<ctx->left)?size:ctx->left)
+#define LEFT ((size<(size_t)ctx->left)?size:ctx->left)
/*
* If the subprocessor function returns with an indication that it wants
@@ -24,7 +24,7 @@
* if the V processor returns with "want more data" even if the buffer
* contains way more data than the V processor have seen.
*/
-#define SIZE_VIOLATION (ctx->left >= 0 && ctx->left <= size)
+#define SIZE_VIOLATION (ctx->left >= 0 && (size_t)ctx->left <= size)
/*
* This macro "eats" the part of the buffer which is definitely "consumed",