[PATCH 1/2] build: accommodate gnulib's new warnings with --enable-gcc-warnings

[Jim Meyering]

FYI, more warning-avoidance and a gnulib update:

>From 337e3ad58a7b6be7f146b2c14065b5188e329943 Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Tue, 29 Nov 2011 18:33:31 +0100
Subject: [PATCH 1/2] build: accommodate gnulib's new warnings with
 --enable-gcc-warnings

* configure.ac (WERROR_CFLAGS): Disable two new warnings:
-Wno-format-nonliteral, -Wno-unsuffixed-float-constants.
* gzip.h (bi_reverse): Declare with _GL_ATTRIBUTE_CONST.
(gzip_base_name): Declare with _GL_ATTRIBUTE_PURE.
---
 configure.ac |    2 ++
 gzip.h       |    4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 4013dfc..6e3e19b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -103,6 +103,8 @@ if test "$gl_gcc_warnings" = yes; then
   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
   gl_WARN_ADD([-Wno-overflow])         # util.c
   gl_WARN_ADD([-Wno-type-limits])      # util.c
+  gl_WARN_ADD([-Wno-format-nonliteral])
+  gl_WARN_ADD([-Wno-unsuffixed-float-constants])

   # In spite of excluding -Wlogical-op above, it is enabled, as of
   # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
diff --git a/gzip.h b/gzip.h
index 568ffb0..49a9dbd 100644
--- a/gzip.h
+++ b/gzip.h
@@ -292,7 +292,7 @@ extern off_t flush_block (char *buf, ulg stored_len, int 
eof);
         /* in bits.c */
 extern void     bi_init    (file_t zipfile);
 extern void     send_bits  (int value, int length);
-extern unsigned bi_reverse (unsigned value, int length);
+extern unsigned bi_reverse (unsigned value, int length) _GL_ATTRIBUTE_CONST;
 extern void     bi_windup  (void);
 extern void     copy_block (char *buf, unsigned len, int header);
 extern int     (*read_buf) (char *buf, unsigned size);
@@ -307,7 +307,7 @@ extern void flush_window  (void);
 extern void write_buf     (int fd, voidp buf, unsigned cnt);
 extern int read_buffer    (int fd, voidp buf, unsigned int cnt);
 extern char *strlwr       (char *s);
-extern char *gzip_base_name (char *fname);
+extern char *gzip_base_name (char *fname) _GL_ATTRIBUTE_PURE;
 extern int xunlink        (char *fname);
 extern void make_simple_name (char *name);
 extern char *add_envopt   (int *argcp, char ***argvp, char const *env);
--
1.7.8.rc4


>From d0aa88a5658ae560b3cf3c561d29a1ea1b7aa679 Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Tue, 29 Nov 2011 18:18:55 +0100
Subject: [PATCH 2/2] build: update gnulib submodule to latest

---
 gnulib |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/gnulib b/gnulib
index 667561d..908690c 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 667561d720dd1e22b51fe5d308a8f94d49d46b85
+Subproject commit 908690cb743e69c73b42ae310807b29800c8764b
--
1.7.8.rc4