Check if cls is nil

hmelder · hmelder · commit e23f5fb04dfd · 2024-10-21T15:07:10.000+02:00
diff --git a/fast_paths.m b/fast_paths.m
@@ -16,6 +16,10 @@ - (id)init;
 id
 objc_alloc(Class cls)
 {
+	if (UNLIKELY(cls == nil))
+	{
+		return nil;
+	}
 	if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))
 	{
 		objc_send_initialize(cls);
@@ -34,6 +38,10 @@ - (id)init;
 id
 objc_allocWithZone(Class cls)
 {
+	if (UNLIKELY(cls == nil))
+	{
+		return nil;
+	}
 	if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))
 	{
 		objc_send_initialize(cls);
@@ -53,6 +61,10 @@ - (id)init;
 id
 objc_alloc_init(Class cls)
 {
+	if (UNLIKELY(cls == nil))
+	{
+		return nil;
+	}
 	id instance = objc_alloc(cls);
 	if (objc_test_class_flag(cls, objc_class_flag_fast_alloc_init))
 	{

Original file line number	Diff line number	Diff line change
`@@ -16,6 +16,10 @@ - (id)init;`
`16`	`16`	`id`
`17`	`17`	`objc_alloc(Class cls)`
`18`	`18`	`{`
	`19`	`+ if (UNLIKELY(cls == nil))`
	`20`	`+ {`
	`21`	`+ return nil;`
	`22`	`+ }`
`19`	`23`	`if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))`
`20`	`24`	`{`
`21`	`25`	`objc_send_initialize(cls);`
`@@ -34,6 +38,10 @@ - (id)init;`
`34`	`38`	`id`
`35`	`39`	`objc_allocWithZone(Class cls)`
`36`	`40`	`{`
	`41`	`+ if (UNLIKELY(cls == nil))`
	`42`	`+ {`
	`43`	`+ return nil;`
	`44`	`+ }`
`37`	`45`	`if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))`
`38`	`46`	`{`
`39`	`47`	`objc_send_initialize(cls);`
`@@ -53,6 +61,10 @@ - (id)init;`
`53`	`61`	`id`
`54`	`62`	`objc_alloc_init(Class cls)`
`55`	`63`	`{`
	`64`	`+ if (UNLIKELY(cls == nil))`
	`65`	`+ {`
	`66`	`+ return nil;`
	`67`	`+ }`
`56`	`68`	`id instance = objc_alloc(cls);`
`57`	`69`	`if (objc_test_class_flag(cls, objc_class_flag_fast_alloc_init))`
`58`	`70`	`{`