Meta/TopicCheck: try new branches with expensive checks

diff --git a/TopicCheck b/TopicCheck
new file mode 100755 (executable)
index 0000000..4e15cb4
--- /dev/null
+++ b/TopicCheck
@@ -0,0 +1,86 @@
+#!/bin/sh
+
+usage () {
+       echo >&2 "usage: $0 [--stdin | <topics>...]"
+}
+
+stdin=
+while case "$1" in -*) ;; *) break; esac
+do
+       case "$1" in
+       --stdin)
+               stedin=stdin ;;
+       *)
+               usage
+               exit 1 ;;
+       esac
+       shift
+done
+
+section () {
+       printf >&3 "\033]0;%s %s\007" "$*"
+       printf >&3 "# %s %s\n" "$*"
+       printf >&2 "\n\n\n\n##### %s %s\n\n\n\n" "$*"
+}
+
+git checkout --quiet --detach
+
+logbase=./+log/$$
+mkdir -p "$logbase"
+
+exec 3>&2
+
+onetopic () {
+       topic="$1"
+       log="$logbase/$(echo "$topic" | tr '/' '-')"
+       exec >"$log" 2>&1
+       git reset --hard "$topic"
+       failed=
+
+       section "$topic - leaks" &&
+       (
+               export SANITIZE=leak GIT_TEST_PASSING_SANITIZE_LEAK=true &&
+               Meta/Make -j32  CC=clang test &&
+               Meta/Make -j32  CC=clang  >/dev/null 2>&1 distclean
+       ) || failed="leaks"
+
+       section "$topic - sha256" &&
+       (
+               export GIT_TEST_DEFAULT_HASH=sha256 &&
+               Meta/Make -j32 test &&
+               Meta/Make >/dev/null 2>&1 distclean
+       ) || failed="$failed${failed:+" "}sha256"
+
+       section "$topic - test" &&
+       (
+               Meta/Make -j32 test &&
+               Meta/Make >/dev/null 2>&1 distclean
+       ) || failed="$failed${failed:+" "}test"
+
+       section "$topic - breaking" &&
+       (
+               Meta/Make $jobs WITH_BREAKING_CHANGES=YesPlease $T test &&
+               Meta/Make WITH_BREAKING_CHANGES=YesPlease >/dev/null 2>&1 distclean
+       ) || failed="$failed${failed:+" "}breaking"
+
+       if test "$failed" = ""
+       then
+               rm -f "$log"
+       else
+               echo >&3 "failed ($failed) $topic"
+               echo >&2 "failed ($failed) $topic"
+       fi
+}
+
+if test "$stdin" = stdin
+then
+       while read topic
+       do
+               onetopic "$topic"
+       done
+else
+       for topic
+       do
+               onetopic "$topic"
+       done
+fi