signals - libs/signals/test/swap_test.cpp compilation error on Debian squeeze

[Monty Brandenberg <mcbinc@…>]

Unit tests for 'signals' library fail to compile on Debian due to missing '#include <iostream>' in swap_test.cpp.

Platform: Debian squeeze (6.0.5), target=gcc-4.6, architecture=x86, 32-bit, variant=release (debug variant compiles). Unit tests being run under bjam with 'variant=release -a -q -d2 -d+4' arguments produce the following error:

"g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -DBOOST_ALL_NO_LIB=1 -DBOOST_SIGNALS_NO_DEPRECATION_WARNING -DBOOST_SIGNALS_STATIC_LINK -DBOOST_TEST_NO_AUTO_LINK=1 -DNDEBUG -I"../../.." -c -o "../../../bin.v2/libs/signals/test/swap_test.test/gcc-4.6/release/link-static/swap_test.o" "swap_test.cpp"

In file included from ../../../boost/config.hpp:26:0,

from ../../../boost/signal.hpp:25, from swap_test.cpp:4:

../../../boost/config/user.hpp:111:0: warning: "BOOST_ALL_NO_LIB" redefined [enabled by default] <command-line>:0:0: note: this is the location of the previous definition swap_test.cpp: In member function 'void HelloWorld::operator()() const': swap_test.cpp:11:5: error: 'cout' is not a member of 'std' 0.000007 sec system; 0.000087 sec user ...failed gcc.compile.c++ ../../../bin.v2/libs/signals/test/swap_test.test/gcc-4.6/release/link-static/swap_test.o... ...skipped <p../../../bin.v2/libs/signals/test/swap_test.test/gcc-4.6/release/link-static>swap_test for lack of <p../../../bin.v2/libs/signals/test/swap_test.test/gcc-4.6/release/link-static>swap_test.o... SEM: <s>gcc-link-semaphore now used by <p../../../bin.v2/libs/signals/test/swap_test.test/gcc-4.6/release/link-static>swap_test ...failed updating 1 target... ...skipped 1 target... ...updated 50 targets... ERROR: building default configuration returned 1

Mercurial unified diff of fix:

diff -r af87ea28f909 boost/libs/signals/test/swap_test.cpp
--- a/boost/libs/signals/test/swap_test.cpp     Thu Dec 19 23:16:23 2013 +0000
+++ b/boost/libs/signals/test/swap_test.cpp     Wed Jan 08 18:20:02 2014 +0000
@@ -1,8 +1,9 @@
 //     https://svn.boost.org/trac/boost/ticket/5521 
 //             claims a linker error for this.
 
+#include <iostream>
 #include <boost/signal.hpp>
 #include <boost/signals/connection.hpp>
 
 struct HelloWorld 
 {