stablerangecache: sanity check subranges
Try to detect invalid conditions on insert as would result in deep
recursions and final aborts much later. This has been observed on two
different machines and the check makes it hopefully possible to find the
origin of the problem.
#!/bin/bash
set -euox pipefail
unset GREP_OPTIONS
compatbranches=$(hg branches --quiet | grep 'mercurial-' | grep -v ':' | sort -n --reverse)
prev='stable'
topic=${1:-'test-compat'}
for branch in $compatbranches; do
# Logic in the revsets below:
# 1. There is target topic on stable or compatibility branch: merge all
# those commits, they are related to our work and need to pass tests on all
# compatibility branches.
# 2. There is no target topic: avoid any commits that have topic set, they
# are definitely unrelated to what we're doing.
# In other words, if you want to test certain commits, assign them all to
# one topic and provide that topic as the first argument to this script.
uptarget="first(max(branch('$branch') and topic('$topic')) or max(branch('$branch') and not topic()))"
hg up -r "$uptarget"
hg topic "$topic"
mergetarget="first(max(branch('$prev') and topic('$topic')) or max(branch('$prev') and not topic()))"
hg merge -r "$mergetarget"
hg commit -m "test-compat: merge $prev into $branch"
prev=$branch
done