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Compiler Bug Causes Compiler Bug: How a 12-Year-Old G++ Bug Took Down Solidity
A subtle G++ bug from 2012, C++20's new comparison rules, and legacy Boost code can collide to crash Solidity's compiler on valid code. We unpack the surprising chain reaction and how to fix it.
Yet running Solidity's compiler (solc) on this file on a standard Ubuntu 22.04 system (G++ 11.4, Boost 1.74) causes an immediate segmentation fault. A 12-year-old overload resolution bug in G++ An outdated symmetric comparison pattern in Boost A subtle but impactful rewrite rule in C++20 A bug introduced in 2012, fixed in 2024, quietly broke one of the most used blockchain compiler toolchains — all without any code in the Solidity repo being “wrong.”
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