From 97af1e481f7a267ac4399c5eec428238acc54ee6 Mon Sep 17 00:00:00 2001
From: Rene Kita <mail@rkta.de>
Date: Fri, 14 Jan 2022 13:11:04 +0100
Subject: [PATCH] Do not swallow errors from GCC

Without this patch posubst always exits with 0. This is a problem when
chaining commands.
---
 posubst.in | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/posubst.in b/posubst.in
index f542e0d..dfd043f 100644
--- a/posubst.in
+++ b/posubst.in
@@ -52,5 +52,22 @@ foreach my $src (@src) {
 }
 
 map {s/(.*\.c)$/.$1/} @ARGV;
+my $err = 0;
 system @ARGV;
+if ($? == -1) {
+	print "failed to execute: $!\n";
+	$err = 125;
+}
+elsif ($? & 127) {
+	printf "child died with signal %d\n", ($? & 127);
+	$err = 125;
+}
+else {
+	$err = $? >> 8;
+	if ($err != 0) {
+		printf "child exited with value %d\n", $err;
+	}
+}
+
 unlink @tmp;
+exit $err;