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Avoid GCC's overflow warnings for operator new.

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Ion Gaztañaga
2020-11-03 10:59:19 +01:00
parent 99d56db196
commit 8a2444201a
1 changed files with 6 additions and 0 deletions
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6
test/default_init_test.hpp
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@@ -12,8 +12,10 @@
#define BOOST_CONTAINER_TEST_DEFAULT_INIT_TEST_HEADER #define BOOST_CONTAINER_TEST_DEFAULT_INIT_TEST_HEADER
#include <boost/container/detail/config_begin.hpp> #include <boost/container/detail/config_begin.hpp>
#include <boost/container/throw_exception.hpp>
#include <cstddef> #include <cstddef>
namespace boost{ namespace boost{
namespace container { namespace container {
namespace test{ namespace test{
@@ -57,6 +59,10 @@ class default_init_allocator
Integral* allocate(std::size_t n) Integral* allocate(std::size_t n)
{ {
const std::size_t max_count = std::size_t(-1)/(2*sizeof(Integral));
if(BOOST_UNLIKELY(n > max_count))
throw_bad_alloc();
//Initialize memory to a pattern //Initialize memory to a pattern
const std::size_t max = sizeof(Integral)*n; const std::size_t max = sizeof(Integral)*n;
unsigned char *puc_raw = ::new unsigned char[max]; unsigned char *puc_raw = ::new unsigned char[max];