CPython Internals: Your Guide to the Python 3 Interpreter by Anthony Shaw

Author:Anthony Shaw
Language: eng
Format: epub
Published: 2021-01-25T23:11:18+00:00

UndefinedBehaviorSanitizer (UBSan) is a fast undefined behavior detector. It can catch various kinds of undefined behavior during execution:

A misaligned or null pointer

A signed integer overflow

Conversion to, from, or between floating-point types

You can enable UBSan by running the following:

$ ./configure --with-undefined-behavior-sanitizer ...

UBSan is supported on the following operating systems:

Linux

macOS

NetBSD

FreeBSD

See the official documentation for more information.

UBSan has many configurations. Using

--with-undefined-behavior-sanitizer will set the undefined profile. To use another profile like nullability, run ./configure with the custom CFLAGS:

$ ./configure CFLAGS="-fsanitize=nullability" \ LDFLAGS="-fsanitize=nullability"

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