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  1. Qt
  2. QTBUG-30009

returning QVariantList as QVariant crashes application

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Details

    • Bug
    • Resolution: Invalid
    • Not Evaluated
    • None
    • 5.0.1
    • Core: Containers and Algorithms, Core: Object Model

    Description

      The following simple code has been crashed (the possible cause is double memory destroying):

      #include <QVariant>

QVariant foo() {
    QVariantList l1;
    l1 << QVariant(QString("Hello"));
    return l1;
}

int main(int argc, char *argv[])
{
    foo();
    return 0;
}

      Here is stack trace:

      0	RtlpBreakPointHeap	ntdll		0x77a85654	
1	RtlpValidateHeapEntry	ntdll		0x77a51a77	
2	RtlValidateHeap	ntdll		0x779e5926	
3	HeapValidate	KERNELBASE		0x75e15dcf	
4	_CrtIsValidHeapPointer	MSVCR100D		0x62378580	
5	_free_dbg_nolock	MSVCR100D		0x623776ba	
6	_free_dbg	MSVCR100D		0x62377560	
7	operator delete	MSVCR100D		0x62376629	
8	QVariant::`scalar deleting destructor'	Qt5Cored		0x5eef0020	
9	QList<QVariant>::node_destruct	qlist.h	421	0x5eef5ef1	
10	QList<QVariant>::dealloc	qlist.h	765	0x5eef18eb	
11	QList<QVariant>::~QList<QVariant>	qlist.h	740	0x5eeed456	
12	QList<QVariant>::`scalar deleting destructor'	Qt5Cored		0x5efcdf7f	
13	v_clear<QList<QVariant> >	qvariant_p.h	162	0x5f01a8cd	
14	QVariantDestructor<`anonymous namespace'::CoreTypesFilter>::FilteredDestructor<QList<QVariant>,1>::FilteredDestructor<QList<QVariant>,1>	qvariant_p.h	431	0x5f010022	
15	QVariantDestructor<`anonymous namespace'::CoreTypesFilter>::delegate<QList<QVariant> >	qvariant_p.h	458	0x5f00a9f7	
16	QMetaTypeSwitcher::switcher<void,QVariantDestructor<`anonymous namespace'::CoreTypesFilter> >	qmetatypeswitcher_p.h	76	0x5f00210f	
17	`anonymous namespace'::clear	qvariant.cpp	122	0x5effac1e	
18	QVariant::~QVariant	qvariant.cpp	1116	0x5effd248	
19	main	main.cpp	13	0x1447db	
20	WinMain	qtmain_win.cpp	131	0x143c6a	
21	__tmainCRTStartup	crtexe.c	578	0x143148	
22	WinMainCRTStartup	crtexe.c	403	0x142eaf	
23	BaseThreadInitThunk	kernel32		0x75f6ed6c	
24	__RtlUserThreadStart	ntdll		0x77a2377b	
25	_RtlUserThreadStart	ntdll		0x77a2374e

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            biochimia João Abecasis
            anatolys Anatoly Shirokov
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            Dates

              Created:
              Updated:
              Resolved: