From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 27 Oct 2017 09:14:27 +0000 (+0200)
Subject: hexdcoct: dump to stdout if FILE* is specified as NULL
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=49505552890aed8efee7f4c109d874520f2d0d29;p=elogind.git

hexdcoct: dump to stdout if FILE* is specified as NULL

We do a logic like that at various other places, let's do it here too,
to make this as little surprising as possible.
---

diff --git a/src/basic/hexdecoct.c b/src/basic/hexdecoct.c
index dec5552a7..b61b032d9 100644
--- a/src/basic/hexdecoct.c
+++ b/src/basic/hexdecoct.c
@@ -737,7 +737,10 @@ void hexdump(FILE *f, const void *p, size_t s) {
         const uint8_t *b = p;
         unsigned n = 0;
 
-        assert(s == 0 || b);
+        assert(b || s == 0);
+
+        if (!f)
+                f = stdout;
 
         while (s > 0) {
                 size_t i;