From: Jim Meyering <meyering@fb.com>
Date: Sun, 25 Oct 2020 17:04:19 +0000 (-0700)
Subject: maint: avoid new sort.c warning from upcoming GCC11
X-Git-Tag: v9.0~195
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc816fb978113370ff9eac41891f256bf217dffc;p=thirdparty%2Fcoreutils.git

maint: avoid new sort.c warning from upcoming GCC11

gcc version 11.0.0 20201025 (experimental) warns that
src/sort.c:1655:1: warning: function might be candidate for attribute \
  'pure' if it is known to return normally [-Wsuggest-attribute=pure]
* src/sort.c (limfield): Mark as pure.
---

diff --git a/src/sort.c b/src/sort.c
index 0163ba18ad..8671ea7673 100644
--- a/src/sort.c
+++ b/src/sort.c
@@ -1651,7 +1651,7 @@ begfield (struct line const *line, struct keyfield const *key)
 /* Return the limit of (a pointer to the first character after) the field
    in LINE specified by KEY. */
 
-static char *
+static char * _GL_ATTRIBUTE_PURE
 limfield (struct line const *line, struct keyfield const *key)
 {
   char *ptr = line->text, *lim = ptr + line->length - 1;