rcx

commit 68c907170c4d36d5cc9c789692ff0e7c025d435c
parent a76d800a28111c7753274bf8f78412a7a88927af
Author: Robert Russell <robertrussell.72001@gmail.com>
Date:   Sun, 24 Sep 2023 15:40:16 -0700

Preserve errno in list free

Most implementations of LIST_FREE should do this already, but
let's be safe (and consistent; I do this in the dict implementation).

Diffstat:
M
inc/list/declare.h
 | 
2
++
M
inc/list/impl/declare.h
 | 
6
+++++-

2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/inc/list/declare.h b/inc/list/declare.h
@@ -1,3 +1,5 @@
+#include <errno.h>
+
 #include "../alloc.h"
 #include "../def.h"
 
diff --git a/inc/list/impl/declare.h b/inc/list/impl/declare.h
@@ -11,7 +11,11 @@ LIST_STATIC UNUSED LIST_T LIST_METHOD(del)(LIST_T **l, usize i);
 
 static inline UNUSED void
 LIST_METHOD(free)(LIST_T **l) {
-	if (*l) LIST_FREE(LIST_HDR(*l));
+	if (*l) {
+		int e = errno;
+		LIST_FREE(LIST_HDR(*l));
+		errno = e;
+	}
 	*l = 0;
 }