From f6c97dfac68184fd99a09ee6c048d7a859677fe5 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Thu, 6 Mar 2014 16:35:02 +0100
Subject: [PATCH] Add strappenda3

(cherry picked from commit f39d4a08e746e703d562076a0f622eb91dbdcd3e)

For strappenda3, and it seems a good fix in general.

(cherry picked from commit 4f0b9b433473d4f2b24675253064fd098d21e5a6)

Conflicts:
	src/systemctl/systemctl.c
---
 src/shared/util.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/shared/util.h b/src/shared/util.h
index 20d81e5..3f97663 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -728,6 +728,19 @@ int unlink_noerrno(const char *path);
                 _c_;                                    \
         })
 
+#define strappenda3(a, b, c)                                    \
+        ({                                                      \
+                const char *_a_ = (a), *_b_ = (b), *_c_ = (c);  \
+                char *_d_;                                      \
+                size_t _x_, _y_, _z_;                           \
+                _x_ = strlen(_a_);                              \
+                _y_ = strlen(_b_);                              \
+                _z_ = strlen(_c_);                              \
+                _d_ = alloca(_x_ + _y_ + _z_ + 1);              \
+                strcpy(stpcpy(stpcpy(_d_, _a_), _b_), _c_);     \
+                _d_;                                            \
+        })
+
 #define procfs_file_alloca(pid, field)                                  \
         ({                                                              \
                 pid_t _pid_ = (pid);                                    \