commit 2e4cf67fafc78b885366b8fde3d9e0c80f35f871
Author: Russ Cox <rsc@swtch.com>
Date:   Thu Sep 30 08:44:00 2021 -0400

    sam: fix spurious overwrite message
    
    Fixes:
    
    % sam -d
     -.
    w foo
    foo: (new file) #0
    w foo
    ?warning: write might change good version of `foo'
    
    [signed-off ok by cross@ for Harvey. Merge from plan9port,
    which is MIT]
    
    Signed-off-by: Dan Cross <cross@gajendra.net>

diff --git a/sys/src/cmd/sam/io.c b/sys/src/cmd/sam/io.c
index 3fee95a05..f24389790 100644
--- a/sys/src/cmd/sam/io.c
+++ b/sys/src/cmd/sam/io.c
@@ -63,7 +63,7 @@ writef(File *f)
 		warn(Wnotnewline);
 	closeio(n);
 	if(f->name.s[0]==0 || samename){
-		if(statfile(name, &dev, &qid, &mtime, 0, 0) > 0){
+		if(statfile(genc, &dev, &qid, &mtime, 0, 0) > 0){
 			f->dev = dev;
 			f->qidpath = qid;
 			f->mtime = mtime;