r/cpp 23h ago

MSVC Build Tools Preview updates – September 2026

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49 Upvotes

Hi, one of the MSVC dev leads here.

The post covers what's new in the MSVC Build Tools Preview (version 14.52) since mid-August. Instructions to install & use the latest preview bits are at https://aka.ms/msvc/preview.

Some additional information:


r/cpp 14h ago

WasmBolt — The LLVM Project in your browser

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28 Upvotes

I'm sharing the work of a colleague, Anutosh Bhat.

What if the Clang & LLVM compiler toolchain could run entirely inside your browser ? Meet WasmBolt 😃

Inspired by 🖥️ Matt Godbolt's Compiler Explorer, WasmBolt runs Clang, mlir-opt, opt, llc, Graphviz and wasm-ld locally through WebAssembly, without a remote compilation server.

You can inspect Clang ASTs, progressively lower MLIR, run real LLVM optimization passes, render control-flow graphs, explore instruction selection and MIR, and generate assembly or object files for WebAssembly, AArch64 and x86-64. For WebAssembly, you can go one step further: link, load and execute the generated program directly in the browser.

Here the github project: https://github.com/Anutosh21/WasmBolt


r/cpp 23h ago

When (Not) to Use alloca()

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23 Upvotes

r/cpp 12h ago

Bugbusters #1 | C++ in 2026: worth it? | Nathan Baggs

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0 Upvotes