print the struct offset at compile time to make this less annoying

Author: dbsanfte

ggml/src/ggml.c

@@ -1151,8 +1151,12 @@ static const char * GGML_GLU_OP_NAME[GGML_GLU_OP_COUNT] = {
 static_assert(GGML_GLU_OP_COUNT == 5, "GGML_GLU_OP_COUNT != 5");
 
 
-static_assert(sizeof(struct ggml_object)%GGML_MEM_ALIGN == 0, "ggml_object size must be a multiple of GGML_MEM_ALIGN");
-static_assert(sizeof(struct ggml_tensor)%GGML_MEM_ALIGN == 0, "ggml_tensor size must be a multiple of GGML_MEM_ALIGN");
+#define GGML_ASSERT_ALIGNED_MSG(N, A, MSG) \
+    static_assert((N) % (A) == 0, MSG " (size=" #N ", align=" #A ", padding=" #((A - (N % A)) % A) ")")
+
+// check that the tensor and object sizes are multiples of GGML_MEM_ALIGN
+GGML_ASSERT_ALIGNED_MSG(sizeof(struct ggml_object), GGML_MEM_ALIGN, "ggml_object size must be a multiple of GGML_MEM_ALIGN");
+GGML_ASSERT_ALIGNED_MSG(sizeof(struct ggml_tensor), GGML_MEM_ALIGN, "ggml_tensor size must be a multiple of GGML_MEM_ALIGN");
 
 
 ////////////////////////////////////////////////////////////////////////////////