Example code to trigger SAN and UBSAN reports

Description

This package provides example for the Address Sanitize and Undefined Behaviour Sanitize features provided by recent gcc and clang versions.

Details

Recent gcc and clang compiler versions provide functionality to memory violations and other undefined behaviour; this is often referred to as “Address Sanitizer” (or SAN) and “Undefined Behaviour Sanitizer” (UBSAN). The Writing R Extension manual describes this in some detail in Section 4 (titled “Debugging”).

This feature has to be enabled in the corresponding binary, eg in R, which is somewhat involved as it also required a current compiler toolchain which is not yet widely available, or in the case of Windows, not available at all (via the common Rtools mechanism).

As an alternative, the pre-built Docker containers available via the Docker Hub can be used on Linux, and via boot2docker on Windows and OS X.

This R package then provides a means of testing the compiler setup as the known code failures provides in the sample code here should be detected correctly, whereas a default build of R will let the package pass.

The code samples are based on the examples from the Address Sanitizer Wiki.

Author(s)

Dirk Eddelbuettel

References

The Writing R Extension manual, sections Using the Address Sanitizer and Using the Undefined Behaviour Sanitizer.

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