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* Replace std::__throw_bad_alloc call with standard C++ Since December of 2025, std::__throw_bad_alloc is no longer visible through #include <new> causing jemalloc build failures with gcc 16. As far as I can tell, all std::__throw_bad_alloc did was arrange to raise a std::bad_alloc exception if exceptions are enabled. I am not sure whether its usage was truly meaningful in jemalloc since the call is wrapped in a try catch and any usage of try catch is considered an error when compiling with -fno-exceptions on gcc, at least. This change adds a check to configure.ac that determines whether exceptions are enabled by compiling a simple try catch that raises a std::bad_alloc exception. If that test succeeds, the macro JEMALLOC_HAVE_CXX_EXCEPTIONS is defined, and jemalloc will raise an exception. Otherwise, we call std::terminate() to abort. This was tested on FreeBSD with the gcc16 port with and without exceptions enabled. * Replace std::set_new_handler calls with std::get_new_handler Previously, std::set_new_handler was used as a workaround for compilers with only partial support for C++11. Now that C++14 is a requirement to enable C++ support, we can assume std::get_new_handler is available.
jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support. jemalloc first came into use as the FreeBSD libc allocator in 2005, and since then it has found its way into numerous applications that rely on its predictable behavior. In 2010 jemalloc development efforts broadened to include developer support features such as heap profiling and extensive monitoring/tuning hooks. Modern jemalloc releases continue to be integrated back into FreeBSD, and therefore versatility remains critical. Ongoing development efforts trend toward making jemalloc among the best allocators for a broad range of demanding applications, and eliminating/mitigating weaknesses that have practical repercussions for real world applications. The COPYING file contains copyright and licensing information. The INSTALL file contains information on how to configure, build, and install jemalloc. The ChangeLog file contains a brief summary of changes for each release. URL: https://jemalloc.net/