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-rw-r--r--qmake/library/proitems.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/qmake/library/proitems.h b/qmake/library/proitems.h
index ff7c8b92f7..4569d7c3ff 100644
--- a/qmake/library/proitems.h
+++ b/qmake/library/proitems.h
@@ -433,11 +433,12 @@ public:
ProFunctionDef(const ProFunctionDef &o) : m_pro(o.m_pro), m_offset(o.m_offset) { m_pro->ref(); }
ProFunctionDef(ProFunctionDef &&other) noexcept
: m_pro(other.m_pro), m_offset(other.m_offset) { other.m_pro = nullptr; }
- ~ProFunctionDef() { m_pro->deref(); }
+ ~ProFunctionDef() { if (m_pro) m_pro->deref(); }
ProFunctionDef &operator=(const ProFunctionDef &o)
{
if (this != &o) {
- m_pro->deref();
+ if (m_pro)
+ m_pro->deref();
m_pro = o.m_pro;
m_pro->ref();
m_offset = o.m_offset;