test: save removing the nonexistent binary output for v fmt and v vet tests

cmd/tools/modules/testing/common.v

@@ -306,13 +306,15 @@ fn worker_trunner(mut p pool.PoolProcessor, idx int, thread_id int) voidptr {
 	mut run_js := false
 
 	is_fmt := ts.vargs.contains('fmt')
+	is_vet := ts.vargs.contains('vet')
+	produces_file_output := !(is_fmt || is_vet)
 
 	if relative_file.ends_with('js.v') {
-		if !is_fmt {
+		if produces_file_output {
 			cmd_options << ' -b js'
-		}
 			run_js = true
 		}
+	}
 
 	if relative_file.contains('global') && !is_fmt {
 		cmd_options << ' -enable-globals'
@@ -333,13 +335,13 @@ fn worker_trunner(mut p pool.PoolProcessor, idx int, thread_id int) voidptr {
 		fname.replace('.v', '')
 	}
 	generated_binary_fpath := os.join_path_single(tmpd, generated_binary_fname)
+	if produces_file_output {
 		if os.exists(generated_binary_fpath) {
 			if ts.rm_binaries {
 				os.rm(generated_binary_fpath) or {}
 			}
 		}
 
-	if !ts.vargs.contains('fmt') {
 		cmd_options << ' -o ${os.quoted_path(generated_binary_fpath)}'
 	}
 	cmd := '${os.quoted_path(ts.vexe)} ' + cmd_options.join(' ') + ' ${os.quoted_path(file)}'
@@ -421,11 +423,9 @@ fn worker_trunner(mut p pool.PoolProcessor, idx int, thread_id int) voidptr {
 			}
 		}
 	}
-	if os.exists(generated_binary_fpath) {
-		if ts.rm_binaries {
+	if produces_file_output && os.exists(generated_binary_fpath) && ts.rm_binaries {
 		os.rm(generated_binary_fpath) or {}
 	}
-	}
 	return pool.no_result
 }
 

cmd/tools/vfmt.v

@@ -247,13 +247,9 @@ fn (mut foptions FormatOptions) post_process_file(file string, formatted_file_pa
 		if !is_formatted_different {
 			return
 		}
-		x := diff.color_compare_files(foptions.find_diff_cmd(), file, formatted_file_path)
-		if x.len != 0 {
 		println("$file is not vfmt'ed")
 		return error('')
 	}
-		return
-	}
 	if foptions.is_c {
 		if is_formatted_different {
 			eprintln('File is not formatted: $file')

vlib/os/os_nix.c.v

@@ -332,7 +332,10 @@ pub fn execute(cmd string) Result {
 	// if cmd.contains(';') || cmd.contains('&&') || cmd.contains('||') || cmd.contains('\n') {
 	// return Result{ exit_code: -1, output: ';, &&, || and \\n are not allowed in shell commands' }
 	// }
-	pcmd := if cmd.contains('2>') { cmd } else { '$cmd 2>&1' }
+	pcmd := if cmd.contains('2>') { cmd.clone() } else { '$cmd 2>&1' }
+	defer {
+		unsafe { pcmd.free() }
+	}
 	f := vpopen(pcmd)
 	if isnil(f) {
 		return Result{

vlib/term/term.v

@@ -142,11 +142,11 @@ pub fn h_divider(divider string) string {
 // ==== TITLE =========================
 pub fn header_left(text string, divider string) string {
 	plain_text := strip_ansi(text)
-	xcols, _ := get_terminal_size()
+	xcols, _ := get_terminal_size() // can get 0 in lldb/gdb
 	cols := imax(1, xcols)
 	relement := if divider.len > 0 { divider } else { ' ' }
 	hstart := relement.repeat(4)[0..4]
-	remaining_cols := (cols - (hstart.len + 1 + plain_text.len + 1))
+	remaining_cols := imax(0, (cols - (hstart.len + 1 + plain_text.len + 1)))
 	hend := relement.repeat((remaining_cols + 1) / relement.len)[0..remaining_cols]
 	return '$hstart $text $hend'
 }