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authorJonathan Nieder <jrnieder@gmail.com>2012-04-14 15:06:57 +0200
committerYang Tse <yangsita@gmail.com>2012-04-14 15:06:57 +0200
commit8b63b48627961c0bf880eb4d57cf24d6a828dcd2 (patch)
treeddc6989b9d2a6081bc115c2095bd3c2aba729e16
parentb9ac64c2cb7965eae3dfa9fd1bf9a2bf04b1e2a5 (diff)
headers: surround GCC attribute names with double underscores
This protects from attribute names being defined by third party's code. Improvement: http://curl.haxx.se/mail/lib-2012-04/0127.html
-rw-r--r--include/curl/typecheck-gcc.h7
-rw-r--r--lib/setup.h2
-rw-r--r--m4/curl-compilers.m48
3 files changed, 9 insertions, 8 deletions
diff --git a/include/curl/typecheck-gcc.h b/include/curl/typecheck-gcc.h
index 5c584b002..f8917e811 100644
--- a/include/curl/typecheck-gcc.h
+++ b/include/curl/typecheck-gcc.h
@@ -7,7 +7,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -141,8 +141,9 @@ __extension__ ({ \
/* To define a new warning, use _CURL_WARNING(identifier, "message") */
#define _CURL_WARNING(id, message) \
- static void __attribute__((warning(message))) __attribute__((unused)) \
- __attribute__((noinline)) id(void) { __asm__(""); }
+ static void __attribute__((__warning__(message))) \
+ __attribute__((__unused__)) __attribute__((__noinline__)) \
+ id(void) { __asm__(""); }
_CURL_WARNING(_curl_easy_setopt_err_long,
"curl_easy_setopt expects a long argument for this option")
diff --git a/lib/setup.h b/lib/setup.h
index 6ce93db4d..4bce5a93f 100644
--- a/lib/setup.h
+++ b/lib/setup.h
@@ -611,7 +611,7 @@ int netware_init(void);
#ifndef __GNUC__
#define UNUSED_PARAM /*NOTHING*/
#else
-#define UNUSED_PARAM __attribute__((unused))
+#define UNUSED_PARAM __attribute__((__unused__))
#endif
/*
diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 9b212e462..fffe85f20 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -21,7 +21,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 59
+# serial 60
dnl CURL_CHECK_COMPILER
@@ -1393,7 +1393,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
case "$compiler_id" in
CLANG)
dnl All versions of clang support -fvisibility=
- tmp_EXTERN="__attribute__ ((visibility (\"default\")))"
+ tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
tmp_CFLAGS="-fvisibility=hidden"
supports_symbol_hiding="yes"
;;
@@ -1401,7 +1401,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
dnl Only gcc 3.4 or later
if test "$compiler_num" -ge "304"; then
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
- tmp_EXTERN="__attribute__ ((visibility (\"default\")))"
+ tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
tmp_CFLAGS="-fvisibility=hidden"
supports_symbol_hiding="yes"
fi
@@ -1420,7 +1420,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
printf("icc fvisibility bug test");
]])
],[
- tmp_EXTERN="__attribute__ ((visibility (\"default\")))"
+ tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
tmp_CFLAGS="-fvisibility=hidden"
supports_symbol_hiding="yes"
])