From 6165b119f6c871c54937a5d25ae294e425af4324 Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Tue, 28 Jun 2022 14:05:32 +0300
Subject: [PATCH] scanner,parser,checker: do show the first error on
 -Wfatal-errors

---
 vlib/v/checker/checker.v | 5 +++++
 vlib/v/parser/parser.v   | 8 ++++++--
 vlib/v/scanner/scanner.v | 4 ++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 110eced6b6..c7f89e5602 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -3687,6 +3687,11 @@ fn (mut c Checker) warn_or_error(message string, pos token.Pos, warn bool) {
 	}
 	if !warn {
 		if c.pref.fatal_errors {
+			ferror := util.formatted_error('error:', message, c.file.path, pos)
+			eprintln(ferror)
+			if details.len > 0 {
+				eprintln('Details: $details')
+			}
 			exit(1)
 		}
 		c.nr_errors++
diff --git a/vlib/v/parser/parser.v b/vlib/v/parser/parser.v
index 1792de0076..b4d8b4b165 100644
--- a/vlib/v/parser/parser.v
+++ b/vlib/v/parser/parser.v
@@ -1824,10 +1824,12 @@ pub fn (mut p Parser) note(s string) {
 }
 
 pub fn (mut p Parser) error_with_pos(s string, pos token.Pos) ast.NodeError {
+	mut kind := 'error:'
 	if p.pref.fatal_errors {
+		ferror := util.formatted_error(kind, s, p.file_name, pos)
+		eprintln(ferror)
 		exit(1)
 	}
-	mut kind := 'error:'
 	if p.pref.output_mode == .stdout && !p.pref.check_only {
 		if p.pref.is_verbose {
 			print_backtrace()
@@ -1864,10 +1866,12 @@ pub fn (mut p Parser) error_with_pos(s string, pos token.Pos) ast.NodeError {
 }
 
 pub fn (mut p Parser) error_with_error(error errors.Error) {
+	mut kind := 'error:'
 	if p.pref.fatal_errors {
+		ferror := util.formatted_error(kind, error.message, error.file_path, error.pos)
+		eprintln(ferror)
 		exit(1)
 	}
-	mut kind := 'error:'
 	if p.pref.output_mode == .stdout && !p.pref.check_only {
 		if p.pref.is_verbose {
 			print_backtrace()
diff --git a/vlib/v/scanner/scanner.v b/vlib/v/scanner/scanner.v
index 38b675ffb0..130c9eab71 100644
--- a/vlib/v/scanner/scanner.v
+++ b/vlib/v/scanner/scanner.v
@@ -1546,6 +1546,10 @@ pub fn (mut s Scanner) error(msg string) {
 		exit(1)
 	} else {
 		if s.pref.fatal_errors {
+			eprintln(util.formatted_error('error:', msg, s.file_path, pos))
+			if details.len > 0 {
+				eprintln(details)
+			}
 			exit(1)
 		}
 		if s.pref.message_limit >= 0 && s.errors.len >= s.pref.message_limit {