tree 6f402b91c6099a62247ef788359b52b4b602ede4
parent 91f3e525a95d6a86f916872116af162eb3bdae5d
author gdt <gdt> 1102604012 +0000
committer gdt <gdt> 1102604012 +0000

add XXX comment about hex_append being unused.
(only used if HAVE_GLIBC_BACKTRACE, so perhaps ifdef it?)