ivila commented on code in PR #179:
URL: 
https://github.com/apache/incubator-teaclave-trustzone-sdk/pull/179#discussion_r2046513152


##########
optee-teec/src/context.rs:
##########
@@ -57,11 +57,7 @@ impl Context {
     /// ```
     pub fn new() -> Result<Context> {
         // define an empty TEEC_Context
-        let mut raw_ctx = raw::TEEC_Context {
-            fd: 0,
-            reg_mem: false,
-            memref_null: false,
-        };
+        let mut raw_ctx = unsafe { std::mem::zeroed() };

Review Comment:
   I prefer using `unsafe { std::mem::zeroed() }` here. While Rust marks this 
as unsafe because zero isn't a valid bit pattern for all types, we're only 
applying it to C structs where a zeroed value is always valid (consistent with 
how we use `memset` in C).
   
   This also avoids unnecessary changes to the `imp` field. While this field 
(in `TEEC_OPERATION`, `TEEC_Session`, etc) may change over time, we explicitly 
shouldn't—and don't need to—care about their internal representation.



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