Drew DeVault • 9/25/2020

A tale of two libcs

The article details a debugging journey where a segfault in the scdoc tool, reproducible only on glibc and not musl libc, leads to a deep dive into their respective implementations of the isalnum function. It provides a technical comparison of the libc code, explaining why the glibc version could cause a crash while musl's remains safe.

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#debugging #c #memory safety