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configure: allow to run clang with ASAN

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Prefer adding LSAN_OPTIONS="suppressions=$PWD/tests/sanitizer_suppressions/lsan" when CC=clang instead.

Changelog-Added: build: clang build now supports --enable-address-sanitizer .
Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
This commit is contained in:
Antoine Poinsot 2020-09-07 16:14:07 +02:00 committed by Rusty Russell
parent 5a87e88ee5
commit 3382dafaee
3 changed files with 6 additions and 4 deletions
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4
configure vendored
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@ -223,10 +223,6 @@ $CC ${CWARNFLAGS-$BASE_WARNFLAGS} $CDEBUGFLAGS $COPTFLAGS -o $CONFIGURATOR $CONF
echo "done"
if [ "$ASAN" = "1" ]; then
if [ "$CC" = "clang" ]; then
echo "Address sanitizer (ASAN) is currently only supported with gcc"
exit 1
fi
if [ "$VALGRIND" = "1" ]; then
echo "Address sanitizer (ASAN) and valgrind cannot be enabled at the same time"
exit 1

3
contrib/sanitizer_suppressions/asan Normal file
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@ -0,0 +1,3 @@
# process_check_funding_broadcast is racy as it operates on a data that may be
# freed under its feet
interceptor_via_fun:process_check_funding_broadcast

3
contrib/sanitizer_suppressions/lsan Normal file
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@ -0,0 +1,3 @@
# Clang would detect false positive here, due to padding. See https://github.com/ElementsProject/lightning/pull/2285
leak:ccan/ccan/autodata/autodata.c
leak:ccan/ccan/htable/htable.c