From: Jim Meyering <meyering@fb.com>
Date: Thu, 15 Oct 2015 16:09:18 +0000 (-0700)
Subject: maint: avoid uniq.c warning from bleeding-edge gcc's -Wstrict-overflow
X-Git-Tag: v8.25~122
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8d7e205309c05cf2c7c9a42b33708b1eb4587ca;p=thirdparty%2Fcoreutils.git

maint: avoid uniq.c warning from bleeding-edge gcc's -Wstrict-overflow

* src/uniq.c (main): Make the type of "nfiles" unsigned,
to avoid a brand new warning from a gcc I built from today's
sources (gcc version 6.0.0 20151015 (experimental) (GCC)):
src/uniq.c:523:14: error: assuming signed overflow does not occur \
  when simplifying conditional to constant [-Werror=strict-overflow]
           if (nfiles == 2)
              ^
---

diff --git a/src/uniq.c b/src/uniq.c
index 8dfb7ea972..7b77dd3b02 100644
--- a/src/uniq.c
+++ b/src/uniq.c
@@ -483,7 +483,7 @@ main (int argc, char **argv)
   int optc = 0;
   bool posixly_correct = (getenv ("POSIXLY_CORRECT") != NULL);
   enum Skip_field_option_type skip_field_option_type = SFO_NONE;
-  int nfiles = 0;
+  unsigned int nfiles = 0;
   char const *file[2];
   char delimiter = '\n';	/* change with --zero-terminated, -z */
   bool output_option_used = false;   /* if true, one of -u/-d/-D/-c was used */