From f17a71de746360822104b6cfeac1fbcad2c8f294 Mon Sep 17 00:00:00 2001
From: Andy Lutomirski <luto@kernel.org>
Date: Tue, 15 Sep 2015 18:24:11 -0700
Subject: Don't complain if do_builtin_io fails due to EPIPE

If stdio is dead due to EPIPE, there's no great reason to spew a stack dump.

This will still write an error to stderr if stdout dies.  This might be
undesirable, but changing that should be considered separately.
---
 src/postfork.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/postfork.cpp')

diff --git a/src/postfork.cpp b/src/postfork.cpp
index 1eb958ad..29cf850c 100644
--- a/src/postfork.cpp
+++ b/src/postfork.cpp
@@ -569,12 +569,13 @@ bool do_builtin_io(const char *out, size_t outlen, const char *err, size_t errle
     bool success = true;
     if (out && outlen)
     {
-
         if (write_loop(STDOUT_FILENO, out, outlen) < 0)
         {
+            int e = errno;
             debug_safe(0, "Error while writing to stdout");
             safe_perror("write_loop");
             success = false;
+            errno = e;
         }
     }
 
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