Fix GCC 9 error.

mjp41 · davidchisnall · commit e8e0f60ccfa2 · 2020-01-07T11:06:12.000Z
diff --git a/src/mem/alloc.h b/src/mem/alloc.h
@@ -974,7 +974,7 @@ namespace snmalloc
     template<ZeroMem zero_mem, AllowReserve allow_reserve>
     SNMALLOC_FAST_PATH void* small_alloc_inner(sizeclass_t sizeclass)
     {
-      assert(sizeclass < NUM_SMALL_CLASSES);
+      SNMALLOC_ASSUME(sizeclass < NUM_SMALL_CLASSES);
       auto& fl = small_fast_free_lists[sizeclass];
       void* head = fl.value;
       if (likely(head != nullptr))

Original file line number	Diff line number	Diff line change
`@@ -974,7 +974,7 @@ namespace snmalloc`
`974`	`974`	`template<ZeroMem zero_mem, AllowReserve allow_reserve>`
`975`	`975`	`SNMALLOC_FAST_PATH void* small_alloc_inner(sizeclass_t sizeclass)`
`976`	`976`	`{`
`977`		`- assert(sizeclass < NUM_SMALL_CLASSES);`
	`977`	`+ SNMALLOC_ASSUME(sizeclass < NUM_SMALL_CLASSES);`
`978`	`978`	`auto& fl = small_fast_free_lists[sizeclass];`
`979`	`979`	`void* head = fl.value;`
`980`	`980`	`if (likely(head != nullptr))`