Should We Really Believe There Are No Solutions to C++ Memory Management Problems?

One of the most common criticisms directed at C++ today is that it is a “memory-unsafe” language, and that problems involving pointers, out-of-bounds access, and object lifetimes are enough to conclude that the language has become outdated.

But is the picture really that simple?

The answer is: No.

C++ Was Never Designed Around Safety at Any Cost

Bjarne Stroustrup began working on what would eventually become C++ in 1979. An early version was already in use inside AT&T by 1983, and the first commercial release appeared in October 1985.

From the beginning, the goal was to combine better program organization and abstraction with the efficiency and low-level control inherited from C.

And this leads to an important point that is often lost in modern debates:

C++ was not designed to prevent programmers from accessing dangerous capabilities. It was designed to give programmers those capabilities when necessary, while placing responsibility for using them correctly on the programmer.

That philosophy gave C++ extraordinary power.

A programmer can control memory, object representation, placement, allocation, concurrency, hardware interaction, and low-level execution details, while still being able to construct high-level abstractions that do not necessarily impose unwanted runtime costs.

But the price is equally clear:

Great freedom comes with great responsibility.

Yes, C++ Really Does Have a Memory-Safety Problem

Defending C++ should never mean denying reality.

In C++, it is possible to write programs containing:

• dangling pointers

• use-after-free errors

• buffer overflows

• out-of-bounds accesses

• double deletion

• lifetime errors

• bugs caused by undefined behavior

The current C++ language standard cannot guarantee that all of these mistakes will be rejected at compile time.

So the problem is real.

But the statement:

“C++ has memory-safety problems.”

is fundamentally different from saying:

“C++ has no solutions for safe memory management.”

The second statement is simply not true.

Modern C++ Is Not “C with Classes”

A major problem with many criticisms of C++ is that they discuss the language as though normal modern programming still means scattering:

new, delete, raw arrays, and owning raw pointers throughout the entire codebase.

Modern C++ can instead rely heavily on RAII, containers, references, ownership-aware objects, and facilities such as:

std::vector std::array std::string std::unique_ptr std::shared_ptr std::span

along with stronger type systems, libraries, static analysis, sanitizers, and the C++ Core Guidelines.

With good design, direct manipulation of raw memory can be isolated to very small and carefully controlled layers of a system instead of being spread throughout the entire application.

And this is an important principle:

The best solution to a dangerous pointer is not always to invent a safer pointer. Sometimes the better solution is to design the program so that most of it does not need owning pointers at all.

Then Rust Arrived with a Different Philosophy

Here we should openly acknowledge Rust's success.

Rust did not merely provide programmers with tools to manage memory more carefully.

It placed ownership, borrowing, and lifetimes at the heart of the language, and made the compiler reject broad classes of programs whose safety it cannot verify.

Its ownership system allows Rust to provide strong memory-safety guarantees without requiring a garbage collector.

That is an important technical achievement and should not be dismissed.

But Rust and C++ follow different philosophies.

The difference can be simplified this way:

Rust: Prove to the compiler that what you are doing is safe, or explicitly move into unsafe.

C++: You are given powerful tools for building safe programs, but the language does not always prevent you from bypassing them when you deliberately require complete control.

There is no absolute requirement that one philosophy must be entirely “correct” while the other is entirely “wrong.”

They simply place the boundary between freedom and restriction in different places.

Can C++ Become Safer?

Certainly.

And this is not merely a theoretical wish.

The C++ standards community continues to work on ideas involving safety profiles, initialization safety, lifetime safety, reductions in undefined behavior, and mechanisms that could allow programmers to select safer and more constrained subsets of the language.

This is, in my view, the logical path forward.

C++ does not need to become Rust.

If Rust's entire programming model were imposed on C++, we could lose part of what made C++ important in the first place, while also creating enormous compatibility problems with decades of existing software and libraries.

A more reasonable goal is for modern C++ to allow programmers to say:

This part of the program follows a safer discipline that the compiler and tools can verify much more aggressively. If low-level control is required, those restrictions can still be crossed deliberately and explicitly.

Power Is Not Only About Making Errors Impossible

There is a modern tendency to judge systems programming languages primarily by how much they prevent programmers from doing.

But systems languages have a harder responsibility.

They must also allow people to build:

• allocators

• kernels

• runtimes

• database engines

• browser engines

• game engines

• embedded firmware

• operating-system components

• software that communicates directly with hardware

In these areas, programmers sometimes genuinely need direct control over:

• memory layout

• alignment

• allocation

• object lifetime

• aliasing

• memory-mapped hardware

• ABI details

• synchronization

• zero-copy techniques

For this reason, freedom in C++ is not simply an unfortunate historical accident.

Part of it is an intentional feature.

The real problem is not that this freedom exists.

The real problem appears when the dangerous path is also the easiest path, even when such power is unnecessary.

That is where C++ should continue to evolve.

Do Not Worship C++ — But Do Not Bury It Too Early Either

Language wars are rarely productive.

Rust is an excellent systems programming language and has introduced extremely valuable ideas into the industry.

Zig also presents an interesting philosophy based on explicit control and relative simplicity.

Other languages will certainly appear in the future.

That is healthy.

But the opposite mistake is to assume that the appearance of a safer language automatically means that C++ is finished.

C++ has decades of maturity, an enormous ecosystem, highly advanced compilers, vast libraries and codebases, and an unusual ability to operate across a very wide spectrum — from high-level abstractions down to extremely low-level interaction with the machine.

For decades, C++ has led many areas of high-performance and systems software.

Competition is stronger today, and that is a good thing.

But competition is not a declaration of death.

Conclusion

We should not say:

“C++ has no memory-safety problems.”

That would be incorrect.

But it is equally incorrect to say:

“There are no solutions to memory management problems in C++.”

The truth is more nuanced.

Modern C++ already provides a powerful collection of techniques that make it possible to write software far more safely than with older C++ programming styles.

What it does not currently provide is the same level of language-enforced memory-safety guarantees that Rust provides.

At the same time, C++ continues to evolve toward stronger safety mechanisms and better verification, while trying not to abandon the historical philosophy that made the language so powerful:

Performance + Abstraction + Control + Freedom

Perhaps the real question, then, is not:

Can C++ become Rust?

But rather:

Can C++ become significantly safer without ceasing to be C++?

I believe that is the real challenge.

And if it succeeds, there is little technical reason to expect C++ to disappear anytime soon.

Competition is welcome.

Criticism is necessary.

Evolution is essential.

But after more than four decades of development, C++ still appears to have a great deal left to say.

Forward, C++.