From: Eric Wong <e@80x24.org>
Date: Sat, 9 Sep 2023 12:01:41 +0000 (+0000)
Subject: xap_helper: use _OPENBSD_SOURCE on NetBSD for reallocarray
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=831a8eb3b396e7d5fcee65b5fd32b2b5be5df61a;p=thirdparty%2Fpublic-inbox.git

xap_helper: use _OPENBSD_SOURCE on NetBSD for reallocarray

NetBSD prefers reallocarr(3) for predictable zero-sized
allocation behavior; but no other OS seems to have reallocarr(3).
reallocarray(3) appears in by OpenBSD, FreeBSD, glibc, and musl,
so continue to go with that.
---

diff --git a/lib/PublicInbox/xap_helper.h b/lib/PublicInbox/xap_helper.h
index 3f45e1c70..add2fe8ca 100644
--- a/lib/PublicInbox/xap_helper.h
+++ b/lib/PublicInbox/xap_helper.h
@@ -14,6 +14,9 @@
 #ifndef _ALL_SOURCE
 #	define _ALL_SOURCE
 #endif
+#if defined(__NetBSD__) && !defined(_OPENBSD_SOURCE) // for reallocarray(3)
+#	define _OPENBSD_SOURCE
+#endif
 #include <sys/file.h>
 #include <sys/mman.h>
 #include <sys/resource.h>