sanitizers: C/C++ Source Code to Trigger Address and Undefined Behaviour
Sanitizers
Recent gcc and clang compiler versions provide functionality to
test for memory violations and other undefined behaviour; this is often
referred to as "Address Sanitizer" (or 'ASAN') and "Undefined Behaviour
Sanitizer" ('UBSAN'). The Writing R Extension manual describes this in some
detail in Section 4.3 title "Checking Memory Access".
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, pre-built Docker containers such as the Rocker container
'r-devel-san' or the multi-purpose container 'r-debug' can be used.
This 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 at <https://github.com/google/sanitizers/wiki>.
Documentation:
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