ASAN error from CRAN testing

[kriemo]

I maintain a CRAN package that depends on rtracklayer for reading bigwigs and gtf files (valr).

CRAN is reporting a addressSanitizer error (gcc-ASAN) when our package is tested (log from CRAN) which tracks back to the UCSC library code vendored within rtracklayer (

rtracklayer/src/ucsc/common.c

Line 32 in 32cd3c2

char *cloneStringZ(const char *s, int size)

).

This error is triggered when reading bigwig files from R with import (specifically this test bigwig file). We don't link or compile against rtracklayer. If the ASAN error is unaddressed, CRAN will remove valr in a few weeks. It is unclear if other CRAN packages which depend on rtracklayer will also be flagged.

do you have any suggestions for how to go about addressing this error? should I try to patch this upstream in the ucsc source or would you accept a patch to rtracklayer (assuming i can reproduce and confirm a fix to the error)?