fix crash in lru_map/SalBitmap on shutdown
When we shut down, we destroy the various caches, in the process of
which SalBitmap calls back into it's owning cache, causing a SIGSEGV.
Found while loading files from tdf#83426
Change-Id: I53db1621a0fdb75a8e66582662b0e2666499192b
Reviewed-on: https://gerrit.libreoffice.org/73387
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
diff --git a/include/o3tl/lru_map.hxx b/include/o3tl/lru_map.hxx
index 003da59..54378a3 100644
--- a/include/o3tl/lru_map.hxx
+++ b/include/o3tl/lru_map.hxx
@@ -69,6 +69,14 @@ public:
lru_map(size_t nMaxSize)
: mMaxSize(nMaxSize ? nMaxSize : std::min(mLruMap.max_size(), mLruList.max_size()))
{}
~lru_map()
{
// Some code .e.g. SalBitmap likes to remove itself from a cache during it's destructor, which means we
// get calls into lru_map while we are in destruction, so use the swap-and-clear idiom to avoid those problems.
mLruMap.clear();
list_t aLruListTemp;
aLruListTemp.swap(mLruList);
}
void insert(key_value_pair_t& rPair)
{
