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Test for gcc warning bug

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This commit is contained in:
Vinnie Falco
2018-11-03 07:53:37 -07:00
parent 8962588cec
commit 215896723f
2 changed files with 44 additions and 0 deletions
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1
CHANGELOG.md
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@@ -5,6 +5,7 @@ Version 187:
* Fix uninitialized comparison in buffers iterator * Fix uninitialized comparison in buffers iterator
* Partial support for BOOST_NO_EXCEPTIONS * Partial support for BOOST_NO_EXCEPTIONS
* Fix a spurious gcc warning * Fix a spurious gcc warning
* Test for gcc warning bug
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------

43
test/beast/core/buffers_cat.cpp
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@@ -11,6 +11,8 @@
#include <boost/beast/core/buffers_cat.hpp> #include <boost/beast/core/buffers_cat.hpp>
#include <boost/beast/unit_test/suite.hpp> #include <boost/beast/unit_test/suite.hpp>
#include <boost/beast/core/buffers_prefix.hpp>
#include <boost/beast/core/buffers_suffix.hpp>
#include <boost/asio/buffer.hpp> #include <boost/asio/buffer.hpp>
#include <boost/asio/streambuf.hpp> #include <boost/asio/streambuf.hpp>
#include <iterator> #include <iterator>
@@ -215,6 +217,45 @@ public:
BEAST_EXPECT(it == it2); BEAST_EXPECT(it == it2);
} }
void
testGccWarning1()
{
using boost::beast::buffers_cat;
using boost::beast::buffers_suffix;
using boost::asio::buffer;
using boost::asio::const_buffer;
char out[64];
std::array<const_buffer, 2> buffers{
{buffer("Hello, "), buffer("world!")}};
std::size_t i = 3;
buffers_suffix<std::array<const_buffer, 2>> cb(buffers);
cb.consume(i);
boost::asio::buffer_copy(
buffer(out),
buffers_cat(cb, cb));
}
// VFALCO Some version of g++ incorrectly complain about
// uninitialized values when buffers_cat and
// buffers_prefix are used together.
void
testGccWarning2()
{
using boost::asio::buffer;
using boost::asio::buffer_copy;
using boost::asio::const_buffer;
char out[64];
const_buffer buffers("Hello, world!", 13);
std::size_t i = 3;
buffers_suffix<const_buffer> cb{buffers};
cb.consume(i);
buffer_copy(
buffer(out),
buffers_cat(buffers_prefix(i, buffers), cb));
}
void run() override void run() override
{ {
using boost::asio::const_buffer; using boost::asio::const_buffer;
@@ -258,6 +299,8 @@ public:
testBufferCat(); testBufferCat();
testIterators(); testIterators();
testGccWarning1();
testGccWarning2();
} }
}; };