[konsole] [Bug 432376] Issues with reflow (links and highlighting)

[Martin Sandsmark]

https://bugs.kde.org/show_bug.cgi?id=432376

--- Comment #3 from Martin Sandsmark <martin.sandsmark at kde.org> ---
just tried to build with asan and ubsan and it crashes immediately when it
tries to reflow, assuming it is related:

==131591==ERROR: AddressSanitizer: heap-use-after-free on address
0x60800002f520 at pc 0x7f38df17a22b bp 0x7ffc78b00f80 sp 0x7ffc78b00f70
READ of size 1 at 0x60800002f520 thread T0
    #0 0x7f38df17a22a in QVarLengthArray<unsigned char, 64>::insert(unsigned
char const*, int, unsigned char const&)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x167c22a)
    #1 0x7f38df16c48c in QVarLengthArray<unsigned char, 64>::insert(int,
unsigned char const&)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x166e48c)
    #2 0x7f38df13c12d in Konsole::Screen::resizeImage(int, int)
../src/Screen.cpp:479
    #3 0x7f38df0b9698 in Konsole::Emulation::setImageSize(int, int)
../src/Emulation.cpp:317
    #4 0x7f38deed7843 in Konsole::Session::updateTerminalSize()
../src/session/Session.cpp:753
    #5 0x7f38deed6495 in Konsole::Session::onViewSizeChange(int, int)
../src/session/Session.cpp:726
    #6 0x7f38def1afe5 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1>,
QtPrivate::List<int, int>, void, void (Konsole::Session::*)(int,
int)>::call(void (Konsole::Session::*)(int, int), Konsole::Session*, void**)
/usr/include/qt/QtCore/qobjectdefs_impl.h:152

0x60800002f520 is located 0 bytes inside of 89-byte region
[0x60800002f520,0x60800002f579)
freed by thread T0 here:
    #0 0x7f38e0f9f0e9 in __interceptor_free
/build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:123
    #1 0x7f38df171e80 in QVarLengthArray<unsigned char, 64>::realloc(int, int)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x1673e80)
    #2 0x7f38df1683fb in QVarLengthArray<unsigned char, 64>::resize(int)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x166a3fb)
    #3 0x7f38df17a1d8 in QVarLengthArray<unsigned char, 64>::insert(unsigned
char const*, int, unsigned char const&)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x167c1d8)
    #4 0x7f38df16c48c in QVarLengthArray<unsigned char, 64>::insert(int,
unsigned char const&)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x166e48c)
    #5 0x7f38df13c12d in Konsole::Screen::resizeImage(int, int)
../src/Screen.cpp:479
    #6 0x7f38df0b9698 in Konsole::Emulation::setImageSize(int, int)
../src/Emulation.cpp:317

previously allocated by thread T0 here:
    #0 0x7f38e0f9f459 in __interceptor_malloc
/build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x7f38df171901 in QVarLengthArray<unsigned char, 64>::realloc(int, int)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x1673901)
    #2 0x7f38df1683fb in QVarLengthArray<unsigned char, 64>::resize(int)
(/home/sandsmark/src/konsole/build/bin/libkdeinit5_konsole.so+0x166a3fb)
    #3 0x7f38df13da7b in Konsole::Screen::resizeImage(int, int)
../src/Screen.cpp:511
    #4 0x7f38df0b9698 in Konsole::Emulation::setImageSize(int, int)
../src/Emulation.cpp:317

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