Do not destroy the strpool if NULL
It is possible that a debug info contains no string (and so strpool
is never allocated).
A protection to avoid accessing strpool was already necessary
in ML_(canonicaliseTables) :
if (di->strpool)
VG_(freezeDedupPA) (di->strpool);
So, if a similar debug info is released, we need the same protection
to avoid accessing a NULL strpool.
Detect by Julian on arm64, but not (at least easily) reproduced on amd64.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14033 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_debuginfo/debuginfo.c b/coregrind/m_debuginfo/debuginfo.c
index a37c228..6e1cacf 100644
--- a/coregrind/m_debuginfo/debuginfo.c
+++ b/coregrind/m_debuginfo/debuginfo.c
@@ -229,7 +229,8 @@
ML_(dinfo_free)(di->symtab);
}
- VG_(deleteDedupPA) (di->strpool);
+ if (di->strpool)
+ VG_(deleteDedupPA) (di->strpool);
/* Delete the two admin arrays. These lists exist primarily so
that we can visit each object exactly once when we need to
