os: fix deref2

medvednikov · medvednikov · commit a9983ebf8512 · 2026-04-05T05:51:18.000+03:00
diff --git a/vlib/os/file.c.v b/vlib/os/file.c.v
@@ -513,7 +513,7 @@ pub fn (mut f File) read_struct[T](mut t T) ! {
 	if tsize == 0 {
 		return error_size_of_type_0()
 	}
-	nbytes := fread(t, 1, tsize, f.cfile)!
+	nbytes := fread(voidptr(&t), 1, tsize, f.cfile)!
 	if nbytes != tsize {
 		return error_with_code('incomplete struct read', nbytes)
 	}
@@ -530,7 +530,7 @@ pub fn (mut f File) read_struct_at[T](mut t T, pos u64) ! {
 		return error_size_of_type_0()
 	}
 	f.seek(pos, .start) or {}
-	nbytes := fread(t, 1, tsize, f.cfile)!
+	nbytes := fread(voidptr(&t), 1, tsize, f.cfile)!
 	f.seek(0, .end) or {}
 	if nbytes != tsize {
 		return error_with_code('incomplete struct read', nbytes)

Original file line number	Diff line number	Diff line change
`@@ -513,7 +513,7 @@ pub fn (mut f File) read_struct[T](mut t T) ! {`
`513`	`513`	`if tsize == 0 {`
`514`	`514`	`return error_size_of_type_0()`
`515`	`515`	`}`
`516`		`- nbytes := fread(t, 1, tsize, f.cfile)!`
	`516`	`+ nbytes := fread(voidptr(&t), 1, tsize, f.cfile)!`
`517`	`517`	`if nbytes != tsize {`
`518`	`518`	`return error_with_code('incomplete struct read', nbytes)`
`519`	`519`	`}`
`@@ -530,7 +530,7 @@ pub fn (mut f File) read_struct_at[T](mut t T, pos u64) ! {`
`530`	`530`	`return error_size_of_type_0()`
`531`	`531`	`}`
`532`	`532`	`f.seek(pos, .start) or {}`
`533`		`- nbytes := fread(t, 1, tsize, f.cfile)!`
	`533`	`+ nbytes := fread(voidptr(&t), 1, tsize, f.cfile)!`
`534`	`534`	`f.seek(0, .end) or {}`
`535`	`535`	`if nbytes != tsize {`
`536`	`536`	`return error_with_code('incomplete struct read', nbytes)`