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On 15.04.2019 10:33, Adrien Ollier wrote:
Hello everybody,

working on bug #74702 
<https://bugs.documentfoundation.org/show_bug.cgi?id=74702> led me to 
read file core/vcl/source/outdev/nativecontrols.cxx.

I think there is an issue here:



If mpGraphics == nullptr and AcquireGraphics() == false, then the second 
if does not return false and we execute the instruction of the return 
statement but this will lead to a crash (because mpGraphics is false in 
this scenario).

No, please check what AcquireGraphics() does. Namely, it is used here to 
acquire mpGraphics when it's not yet available. In fact, lines 166-167 
are equivalent to this: "if (!mpGraphics) AcquireGraphics(); if 
(!mpGraphics) return false;"

-- 
Best regards,
Mike Kaganski

Context


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