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configure: use -Wno-varargs on clang 3.9[.X] debug builds

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... to avoid a clang bug
This commit is contained in:
Daniel Stenberg 2017-09-08 14:48:45 +02:00
parent 261da2a668
commit f8548e84ad
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1 changed files with 6 additions and 1 deletions
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m4/curl-compilers.m4
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@ -5,7 +5,7 @@
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
# Copyright (C) 1998 - 2017, 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
@ -922,6 +922,11 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
dnl Only clang 3.9 or later
if test "$compiler_num" -ge "309"; then
tmp_CFLAGS="$tmp_CFLAGS -Wcomma"
# avoid the varargs warning, fixed in 4.0
# https://bugs.llvm.org/show_bug.cgi?id=29140
if test "$compiler_num" -lt "400"; then
tmp_CFLAGS="$tmp_CFLAGS -Wno-varargs"
fi
fi
fi
;;