Module Name: src
Committed By: mlelstv
Date: Sat May 4 13:29:41 UTC 2024
Modified Files:
src/usr.bin/seq: seq.c
Log Message:
Bail if increment is too small for the precision to avoid an infinite loop.
To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/usr.bin/seq/seq.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/seq/seq.c
diff -u src/usr.bin/seq/seq.c:1.13 src/usr.bin/seq/seq.c:1.14
--- src/usr.bin/seq/seq.c:1.13 Sat Feb 24 10:10:04 2024
+++ src/usr.bin/seq/seq.c Sat May 4 13:29:41 2024
@@ -31,7 +31,7 @@
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 2005\
The NetBSD Foundation, Inc. All rights reserved.");
-__RCSID("$NetBSD: seq.c,v 1.13 2024/02/24 10:10:04 mlelstv Exp $");
+__RCSID("$NetBSD: seq.c,v 1.14 2024/05/04 13:29:41 mlelstv Exp $");
#endif /* not lint */
#include <ctype.h>
@@ -105,6 +105,7 @@ main(int argc, char *argv[])
double first = 1.0;
double last = 0.0;
double incr = 0.0;
+ double prev;
struct lconv *locale;
char *fmt = NULL;
const char *sep = "\n";
@@ -208,15 +209,23 @@ main(int argc, char *argv[])
if (incr > 0) {
printf(fmt, first);
+ prev = first;
for (first += incr; first <= last; first += incr) {
+ if (first <= prev)
+ errx(1, "increment too small\n");
fputs(sep, stdout);
printf(fmt, first);
+ prev = first;
}
} else {
printf(fmt, first);
+ prev = first;
for (first += incr; first >= last; first += incr) {
+ if (first >= prev)
+ errx(1, "increment too small\n");
fputs(sep, stdout);
printf(fmt, first);
+ prev = first;
}
}
if (term != NULL)
