c++: use __attribute__((__pure__)) to avoid warnings

[bison.git] / tests / synclines.at

diff --git a/tests/synclines.at b/tests/synclines.at
index 751db7c659bd837f4d11e13bd16f9777995d24cd..99f9df90a3bcab64d7341bedc1f28415398b29e1 100644 (file)
--- a/tests/synclines.at
+++ b/tests/synclines.at
@@ -1,6 +1,6 @@
 # Executing Actions.                               -*- Autotest -*-
 
-# Copyright (C) 2002, 2004-2005, 2007, 2009-2012 Free Software
+# Copyright (C) 2002, 2004-2005, 2007, 2009-2013 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -23,7 +23,7 @@ AT_BANNER([[User Actions.]])
 # --------------------------
 # Compile FILE expecting an error, and save in the file stdout the
 # normalized output.  Ignore the exit status, since some compilers
-# (e.g. c89 on IRIX 6.5) trigger warnings on `#error', instead of
+# (e.g. c89 on IRIX 6.5) trigger warnings on '#error', instead of
 # errors.
 m4_define([AT_SYNCLINES_COMPILE],
 [AT_CHECK([$CC $CFLAGS $CPPFLAGS -c $1], [ignore], [], [stderr])
@@ -54,7 +54,7 @@ m4_define([AT_SYNCLINES_COMPILE],
 #    #error "1"
 #     ^
 #
-# And possibly distcc adds its bits.
+# Possibly distcc adds its bits.
 #
 #   distcc[33187] ERROR: compile (null) on localhost failed
 #   syncline.c:1:2: error: #error "1"
@@ -71,11 +71,18 @@ m4_define([AT_SYNCLINES_COMPILE],
 #    #error "1"
 #     ^
 #    1 error generated.
+#
+# When c++ is used to compiler C, we might have more messages (Clang 3.2):
+#
+#    clang: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated
+
 AT_CHECK([[$PERL -p -0777 - stderr <<\EOF
   # 1. Remove useless lines.
 
   # distcc clutter.
   s/^distcc\[\d+\] .*\n//gm;
+  # c vs. c++.
+  s/^clang: warning: treating 'c' input as 'c\+\+'.*\n//gm;
   # Function context.
   s/^[^:]*: In function '[^']+':\n//gm;
   # Caret error.
@@ -120,7 +127,7 @@ AT_BISON_OPTION_PUSHDEFS
 
 AT_DATA([syncline.c],
 [[#error "1"
-int i; // avoids -pedantic warning about an empty translation unit
+int i; /* avoids -pedantic warning about an empty translation unit. */
 ]])
 
 AT_SYNCLINES_COMPILE([syncline.c])
@@ -261,7 +268,7 @@ m4_popdef([AT_TEST])
 ## ----------- ##
 
 m4_pushdef([AT_TEST],
-[AT_SETUP([%no-lines])
+[AT_SETUP([%no-lines: $1])
 
 AT_BISON_OPTION_PUSHDEFS([%skeleton "$1" %defines])
 AT_DATA_GRAMMAR([input.y],