qt.cfg: Add configuration for QString

cfg/qt.cfg

@@ -88,6 +88,41 @@
       <not-uninit/>
     </arg>
   </function>
+
+  <container id="qtContainer" opLessAllowed="false">
+    <type templateParameter="0"/>
+    <size>
+      <function name="append" action="push"/>
+      <function name="clear" action="clear"/>
+      <function name="count" yields="size"/>
+      <function name="erase" action="erase"/>
+      <function name="insert" action="insert"/>
+      <function name="isEmpty" yields="empty"/>
+      <function name="size" yields="size"/>
+      <function name="swap" action="change"/>
+    </size>
+    <access>
+      <function name="begin" yields="start-iterator"/>
+      <function name="cbegin" yields="start-iterator"/>
+      <function name="constBegin" yields="start-iterator"/>
+      <function name="end" yields="end-iterator"/>
+      <function name="cend" yields="end-iterator"/>
+      <function name="constEnd" yields="end-iterator"/>
+    </access>
+  </container>
+
+  <container id="qtString" startPattern="QString" endPattern="" inherits="qtContainer" opLessAllowed="true">
+    <type string="std-like"/>
+    <size>
+      <function name="resize" action="resize"/>
+    </size>
+    <access indexOperator="array-like">
+      <function name="at" yields="at_index"/>
+      <function name="front" yields="item"/>
+      <function name="back" yields="item"/>
+    </access>
+  </container>
+
   <define name="Q_DECL_EXPORT" value=""/>
   <define name="Q_DECL_IMPORT" value=""/>
   <define name="Q_DECLARE_FLAGS(x,y)" value=""/>

test/cfg/qt.cpp

@@ -0,0 +1,21 @@
+
+// Test library configuration for qt.cfg
+//
+// Usage:
+// $ cppcheck --check-library --enable=information --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr --library=qt test/cfg/qt.cpp
+// =>
+// No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
+//
+
+class QString {
+public:
+  int size();
+  char &operator[](int pos);
+};
+
+void QString1(QString s) {
+  for (int i = 0; i <= s.size(); ++i) {
+    // cppcheck-suppress stlOutOfBounds
+    s[i] = 'x';
+  }
+}

test/cfg/runtests.sh

@@ -27,6 +27,10 @@ ${CPPCHECK} ${CPPCHECK_OPT} --library=posix  ${DIR}posix.c
 ${CC} ${CC_OPT} -D_GNU_SOURCE ${DIR}gnu.c
 ${CPPCHECK} ${CPPCHECK_OPT} --library=gnu ${DIR}gnu.c
 
+# qt.cpp
+${CXX} ${CXX_OPT} ${DIR}qt.cpp
+${CPPCHECK} --enable=style --enable=information --inline-suppr --error-exitcode=1 --library=qt ${DIR}qt.cpp
+
 # std.c
 ${CC} ${CC_OPT} ${DIR}std.c
 ${CPPCHECK} ${CPPCHECK_OPT} ${DIR}std.c