Debugger: Fix passing of maximum string length

Change-Id: I96498b93bb1632de8ca960ae24ec54e31f8c0897
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/debugger/gdbbridge.py

@@ -492,6 +492,8 @@ class Dumper(DumperBase):
                 resultVarName = arg[pos:]
             elif arg.startswith("expanded:"):
                 self.expandedINames = set(arg[pos:].split(","))
+            elif arg.startswith("stringcutoff:"):
+                self.stringCutOff = int(arg[pos:])
             elif arg.startswith("typeformats:"):
                 for f in arg[pos:].split(","):
                     pos = f.find("=")

src/plugins/debugger/gdb/gdbengine.cpp

@@ -1829,10 +1829,6 @@ void GdbEngine::handlePythonSetup(const GdbResponse &response)
             postCommand("bbsetup");
         }
 
-        postCommand("python qqStringCutOff = "
-            + debuggerCore()->action(MaximalStringLength)->value().toByteArray(),
-            ConsoleCommand|NonCriticalResponse);
-
         m_hasPython = true;
         GdbMi data;
         data.fromStringMultiple(response.consoleStreamOutput);

src/plugins/debugger/gdb/pythongdbengine.cpp

@@ -37,6 +37,7 @@
 
 #include <debugger/stackhandler.h>
 
+#include <utils/savedaction.h>
 #include <utils/qtcassert.h>
 
 #define PRECONDITION QTC_CHECK(hasPython())
@@ -58,6 +59,9 @@ void GdbEngine::updateLocalsPython(const UpdateParameters &params)
     expanded += "typeformats:" + handler->typeFormatRequests() + ' ';
     expanded += "formats:" + handler->individualFormatRequests();
 
+    QByteArray cutOff = " stringcutoff:"
+        + debuggerCore()->action(MaximalStringLength)->value().toByteArray();
+
     QByteArray watchers;
     const QString fileName = stackHandler()->currentFrame().file;
     const QString function = stackHandler()->currentFrame().function;
@@ -127,7 +131,7 @@ void GdbEngine::updateLocalsPython(const UpdateParameters &params)
         resultVar = "resultvarname:" + m_resultVarName + ' ';
 
     postCommand("bb options:" + options + " vars:" + params.varList + ' '
-            + resultVar + expanded + " watchers:" + watchers.toHex(),
+            + resultVar + expanded + " watchers:" + watchers.toHex() + cutOff,
         Discardable, CB(handleStackFramePython), QVariant(params.tryPartial));
 }
 

tests/manual/debugger/simple/simple_test_app.cpp

@@ -3748,6 +3748,18 @@ namespace qstring  {
         dummyStatement(&str, &string, pstring);
     }
 
+    void testQString4()
+    {
+        QString str;
+        for (int i = 0; i < 1000000; ++i)
+            str += QString::fromLatin1("%1 ").arg(i);
+        BREAK_HERE;
+        BREAK_HERE;
+        BREAK_HERE;
+        BREAK_HERE;
+        dummyStatement(&str);
+    }
+
     void testQStringRef()
     {
         QString str = "Hello";
@@ -3763,6 +3775,7 @@ namespace qstring  {
         testQString1();
         testQString2();
         testQString3();
+        testQString4();
         testQStringRef();
         testQStringQuotes();
     }