Sanitize type 'size' parameters in our read/write file code

This patch tries to sanitize the types of our size parameters across our read
and write code, which is currently fairly inconsistent (using `int`, `uint`,
`size_t`...), by using `size_t` everywhere. Since in Blender file themselves
we can only store chunk of size `MAX_INT`, added some asserts to ensure that
as well.

See {T79561} for details.

Differential Revision: https://developer.blender.org/D8672

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/idprop.c b/source/blender/blenkernel/intern/idprop.c
index a3e7d8c794d..af15b9143e7 100644
--- a/source/blender/blenkernel/intern/idprop.c
+++ b/source/blender/blenkernel/intern/idprop.c
@@ -1186,7 +1186,7 @@ static void IDP_WriteArray(const IDProperty *prop, BlendWriter *writer)
 {
   /*REMEMBER to set totalen to len in the linking code!!*/
   if (prop->data.pointer) {
-    BLO_write_raw(writer, (int)MEM_allocN_len(prop->data.pointer), prop->data.pointer);
+    BLO_write_raw(writer, MEM_allocN_len(prop->data.pointer), prop->data.pointer);
 
     if (prop->subtype == IDP_GROUP) {
       IDProperty **array = prop->data.pointer;
@@ -1217,7 +1217,7 @@ static void IDP_WriteIDPArray(const IDProperty *prop, BlendWriter *writer)
 static void IDP_WriteString(const IDProperty *prop, BlendWriter *writer)
 {
   /*REMEMBER to set totalen to len in the linking code!!*/
-  BLO_write_raw(writer, prop->len, prop->data.pointer);
+  BLO_write_raw(writer, (size_t)prop->len, prop->data.pointer);
 }
 
 static void IDP_WriteGroup(const IDProperty *prop, BlendWriter *writer)