string constructor fails to catch length error at edge case

[ongjunjie]

The following code segfaults

#define EASTL_EXCEPTIONS_ENABLED 1
#include <EASTL/string.h>

int main() {
    try {
        eastl::string( size_t(-1), 'a' );
    } catch( const std::length_error& ) {
    }
    return 0;
}

void* operator new[] (size_t size, const char*, int, unsigned, const char*, int)
{
    return (void*)::new char[size];
}

void* operator new[] (size_t size, size_t, size_t, const char*, int, unsigned, const char*, int)
{
    return (void*)::new char[size];
}