options: use panic_debug() for opt()? calls in main with -cg

vlib/v/ast/ast.v

@@ -731,6 +731,7 @@ pub struct OrExpr {
 pub:
 	stmts []Stmt
 	kind  OrKind
+	pos      token.Position
 }
 
 pub struct Assoc {

vlib/v/gen/cgen.v

@@ -2973,7 +2973,12 @@ fn (mut g Gen) or_block(var_name string, or_block ast.OrExpr, return_type table.
 		}
 	} else if or_block.kind == .propagate {
 		if g.file.mod.name == 'main' && g.cur_fn.name == 'main' {
-			g.writeln('\tv_panic(${cvar_name}.v_error);')
+			if g.pref.is_debug {
+				paline, pafile, pamod, pafn := g.panic_debug_info(or_block.pos)
+				g.writeln('panic_debug($paline, tos3("$pafile"), tos3("$pamod"), tos3("$pafn"), ${cvar_name}.v_error );')
+			}else{
+				g.writeln('\tv_panic(${cvar_name}.v_error);')
+			}
 		} else {
 			g.writeln('\treturn $cvar_name;')
 		}
@@ -3982,3 +3987,18 @@ fn (g &Gen) interface_call(typ, interface_type table.Type) {
 		g.write('&')
 	}
 }
+
+fn (mut g Gen) panic_debug_info(pos token.Position) (int, string, string, string) {
+	paline := pos.line_nr + 1
+	pafile := g.fn_decl.file.replace('\\', '/')
+	pafn := g.fn_decl.name.after('.')
+	mut pamod := g.fn_decl.name.all_before_last('.')
+	if pamod == pafn {
+		pamod = if g.fn_decl.is_builtin {
+			'builtin'
+		} else {
+			'main'
+		}
+	}
+	return paline, pafile, pamod, pafn
+}

vlib/v/gen/fn.v

@@ -533,17 +533,7 @@ fn (mut g Gen) fn_call(node ast.CallExpr) {
 			g.write('))')
 		}
 	} else if g.pref.is_debug && node.name == 'panic' {
-		paline := node.pos.line_nr + 1
-		pafile := g.fn_decl.file.replace('\\', '/')
-		pafn := g.fn_decl.name.after('.')
-		mut pamod := g.fn_decl.name.all_before_last('.')
-		if pamod == pafn {
-			pamod = if g.fn_decl.is_builtin {
-				'builtin'
-			} else {
-				'main'
-			}
-		}
+		paline, pafile, pamod, pafn := g.panic_debug_info(node.pos)
 		g.write('panic_debug($paline, tos3("$pafile"), tos3("$pamod"), tos3("$pafn"),  ')
 		g.call_args(node.args, node.expected_arg_types)
 		g.write(')')

vlib/v/parser/fn.v

@@ -80,6 +80,7 @@ pub fn (mut p Parser) call_expr(language table.Language, mod string) ast.CallExp
 		or_block: ast.OrExpr{
 			stmts: or_stmts
 			kind: or_kind
+			pos: pos
 		}
 		generic_type: generic_type
 	}

vlib/v/parser/parser.v

@@ -1026,6 +1026,7 @@ fn (mut p Parser) dot_expr(left ast.Expr) ast.Expr {
 			or_block: ast.OrExpr{
 				stmts: or_stmts
 				kind: or_kind
+				pos: pos
 			}
 		}
 		if is_filter {