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authorZach van Rijn <me@zv.io>2022-12-20 12:06:10 -0600
committerA. Wilcox <AWilcox@Wilcox-Tech.com>2022-12-23 07:50:17 +0000
commitf23545d9d38b8102ec739e4deab6cd8f55fe495b (patch)
tree00175d0a4a29d6649716953cfa30fbdbb55523e3
parent0bab8d7ad886dcdcc217a17c08dc1a50327d0d2a (diff)
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scripts/tsort.c: clean up some non-portable code.
Many variants of this utility are floating around; there does not appear to be a canonical implementation. This one works for us. * removed non-portable '#include <sys/cdefs.h>'; * replaced legacy 'bcopy' with 'memmove' as recommended The code is still C99 but could be ported to C89 trivially.
-rw-r--r--scripts/tsort.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/scripts/tsort.c b/scripts/tsort.c
index e307268da..51aba6a31 100644
--- a/scripts/tsort.c
+++ b/scripts/tsort.c
@@ -42,8 +42,6 @@ static const char copyright[] =
static const char sccsid[] = "@(#)tsort.c 8.3 (Berkeley) 5/4/95";
#endif /* not lint */
-#include <sys/cdefs.h>
-
#include <sys/types.h>
#include <ctype.h>
@@ -55,6 +53,9 @@ static const char sccsid[] = "@(#)tsort.c 8.3 (Berkeley) 5/4/95";
#include <string.h>
#include <unistd.h>
+/* https://pubs.opengroup.org/onlinepubs/007904875/functions/bcopy.html */
+#define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0)
+
/*
* Topological sort. Input is a list of pairs of strings separated by
* white space (spaces, tabs, and/or newlines); strings are written to