[SYCL][L0] Fix build with clang compiler (#5415)

bader · web-flow · commit 426664a475a4 · 2022-01-28T19:23:06.000+03:00
Fixes uninitialized variable warning introduced by 844d7b6: ``` llvm/src/sycl/plugins/level_zero/pi_level_zero.cpp:3474:9: error: variable 'Result' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] PI_CALL(piextUSMHostAlloc(&Ptr, Context, nullptr, Size, Alignment)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ```
diff --git a/sycl/plugins/level_zero/pi_level_zero.cpp b/sycl/plugins/level_zero/pi_level_zero.cpp
@@ -3446,7 +3446,7 @@ pi_result piMemBufferCreate(pi_context Context, pi_mem_flags Flags, size_t Size,
     }
   }
 
-  pi_result Result;
+  pi_result Result = PI_SUCCESS;
   if (DeviceIsIntegrated) {
     if (HostPtrImported) {
       // When HostPtr is imported we use it for the buffer.

Original file line number	Diff line number	Diff line change
`@@ -3446,7 +3446,7 @@ pi_result piMemBufferCreate(pi_context Context, pi_mem_flags Flags, size_t Size,`
`3446`	`3446`	`}`
`3447`	`3447`	`}`
`3448`	`3448`
`3449`		`- pi_result Result;`
	`3449`	`+ pi_result Result = PI_SUCCESS;`
`3450`	`3450`	`if (DeviceIsIntegrated) {`
`3451`	`3451`	`if (HostPtrImported) {`
`3452`	`3452`	`// When HostPtr is imported we use it for the buffer.`