X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Funit-printf.c;h=62599d0813bd2478ace3c0a95f51cbff374f9a7d;hb=cc98b3025eeb89addb76a27390cb2baca4eab8b9;hp=d16d856b516aa5e36bd84831a42ff45fbc801c5b;hpb=dca348bcbb462305864526c587495a14a76bfcde;p=elogind.git

diff --git a/src/core/unit-printf.c b/src/core/unit-printf.c
index d16d856b5..62599d081 100644
--- a/src/core/unit-printf.c
+++ b/src/core/unit-printf.c
@@ -182,7 +182,7 @@ static int specifier_user_name(char specifier, void *data, void *userdata, char
         char *printed = NULL;
         Unit *u = userdata;
         ExecContext *c;
-        int r;
+        int r = 0;
 
         assert(u);
 
@@ -208,7 +208,7 @@ static int specifier_user_name(char specifier, void *data, void *userdata, char
                                 if (r < 0)
                                         return -ENODATA;
 
-                                asprintf(&printed, "%lu", (unsigned long) uid);
+                                r = asprintf(&printed, UID_FMT, uid);
                         }
                 }
 
@@ -231,10 +231,10 @@ static int specifier_user_name(char specifier, void *data, void *userdata, char
                 if (specifier == 'u')
                         printed = strdup(username);
                 else
-                        asprintf(&printed, "%lu", (unsigned long) uid);
+                        r = asprintf(&printed, UID_FMT, uid);
         }
 
-        if (!printed)
+        if (r < 0 || !printed)
                 return -ENOMEM;
 
         *ret = printed;