Jürgen Spitzmüller wrote:
> Jürgen Spitzmüller wrote:
>> However, I have compiled with stdlib-debug enabled.
>> I'm just recompiling with --disable-stdlib-debug to check if that makes a
>> difference.
>
> It does. With --disable-stdlib-debug, I don't get the crash either. So are we
> doing something invalid that does only surface when stdlib-debug is enabled?
>
> Jürgen
>
Yes, it seems that the stdlib-debug is triggert by the code,
as your backtrace indicates:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47008102289504 (LWP 12243)]
0x0000000000ba8d84 in lyx::frontend::QTocDialog::setTreeDepth (this=0x18d97a0,
depth=<value optimized out>) at QTocDialog.C:113
at this place is a huge Qt macro:
Q_FOREACH (QModelIndex index, indices) { // I had to use Q_FOREACH instead of
foreach
if(getIndexDepth(index) < depth_) // because compile flag
-DQT_NO_KEYWORDS doesn't allow me..
tocTV->expand(index); //<- line 113
else
>From qglobal.h:
struct QForeachContainerBase {};
template <typename T>
class QForeachContainer : public QForeachContainerBase {
public:
inline QForeachContainer(const T& t): c(t), brk(0), i(c.begin()),
e(c.end()){};
const T c;
mutable int brk;
mutable typename T::const_iterator i, e;
inline bool condition() const { return (!brk++ && i != e); }
};
template <typename T> inline T *qForeachPointer(const T &) { return 0; }
template <typename T> inline QForeachContainer<T> qForeachContainerNew(const T&
t)
{ return QForeachContainer<T>(t); }
template <typename T>
inline const QForeachContainer<T> *qForeachContainer(const
QForeachContainerBase *base, const T *)
{ return static_cast<const QForeachContainer<T> *>(base); }
#define Q_FOREACH(variable, container) \
for (const QForeachContainerBase &_container_ =
qForeachContainerNew(container); \
qForeachContainer(&_container_, true ? 0 :
qForeachPointer(container))->condition(); \
++qForeachContainer(&_container_, true ? 0 :
qForeachPointer(container))->i) \
for (variable = *qForeachContainer(&_container_, true ? 0 :
qForeachPointer(container))->i; \
qForeachContainer(&_container_, true ? 0 :
qForeachPointer(container))->brk; \
--qForeachContainer(&_container_, true ? 0 :
qForeachPointer(container))->brk)
Maybe this macro is not perfect or the usage is wrong.
I assume that when we replace the macro by hand written
for-each code the bug is fixed.
Peter
