qmllint: Don't crash on IDs that aren't scopes

In particular, those can be qualifiers for imports, in which case we
have to combine them with the next segment in order to find the type.

Task-number: QTBUG-82817
Change-Id: I217a79572cd1e160dcbbcb9541c53941c81ab76c
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 18 insertions, 3 deletions

diff --git a/tools/qmllint/scopetree.cpp b/tools/qmllint/scopetree.cpp
index 5c0fa526a4..07413094c0 100644
--- a/tools/qmllint/scopetree.cpp
+++ b/tools/qmllint/scopetree.cpp
@@ -293,9 +293,24 @@ bool ScopeTree::recheckIdentifiers(
 
             auto it = qmlIDs.find(memberAccessTree->m_name);
             if (it != qmlIDs.end()) {
-                if (!checkMemberAccess(code, memberAccessTree.get(), *it, types, colorOut))
-                    noUnqualifiedIdentifier = false;
-                continue;
+                if (*it != nullptr) {
+                    if (!checkMemberAccess(code, memberAccessTree.get(), *it, types, colorOut))
+                        noUnqualifiedIdentifier = false;
+                    continue;
+                } else if (memberAccessTree->m_child
+                           && memberAccessTree->m_child->m_name.front().isUpper()) {
+                    // It could be a qualified type name
+                    const QString qualified = memberAccessTree->m_name + QLatin1Char('.')
+                            + memberAccessTree->m_child->m_name;
+                    const auto typeIt = types.find(qualified);
+                    if (typeIt != types.end()) {
+                        if (!checkMemberAccess(code, memberAccessTree->m_child.get(), typeIt->get(),
+                                               types, colorOut)) {
+                            noUnqualifiedIdentifier = false;
+                        }
+                        continue;
+                    }
+                }
             }
 
             auto qmlScope = currentScope->currentQMLScope();