This doesn't fix all the issues found by the fuzzer, but it fixes
many of them. When running this
Meta/Lagom/Fuzzers/FuzzJPGLoader -jobs=24 -workers=24 \
../Base/res/html/misc/jpgsuite_files/
for 10 minutes on my machine, the fuzzer foudn 2 crashers, but after
this change it finds just ... 2. But with different stacks!
This just fixes ASSERT()s, so it's not security critical, but
ASSERT()s still crash the programs decoding JPGs, and crashing
less is nice even if it's not a security concern.
This patch shrinks X86::Instruction from 56 to 28 bytes by packing data
members more tightly and removing some entirely.
There is still some data duplication between Instruction and the
corresponding InstructionDescriptor but it will be a bit tricky to get
much more out of it.
This looks like a 1-2% improvement on general emulation speed. :^)
This adds a few macros used to determine the category of a floating
point number. This fixes a build error with the jq port due to the
previously missing isnormal() macro.
Co-authored-by: Lua MacDougall <luawhat@gmail.com>
This moves file extension to icon mappings from compile time macros to an
INI config file (/etc/FileIconProvider.ini), so file icons can easily be
customized and extended :^)
I also switched the format from a static file extension (".foo") to
glob-like patterns ("*.foo", using StringUtils::matches()), which allows
us to assign icons to specific exactly matching file names, like many
IDEs do - e.g. "CMakeLists.txt" or ".prettierrc".
When we hit the last token, make the saved pointer point to the null
terminator instead of to the next token. This ensures that the next
call to strtok_r() returns null as expected.
Found by running GCC in UE. :^)
By using Gfx::Bitmap::is_path_a_supported_image_format() we can
automatically provide the image icon for all supported image formats,
without keeping a second list of image file extensions.
Bitmap::is_path_a_supported_image_format() and Bitmap::load_from_file()
now check the file extension with CaseSensitivity::CaseInsensitive.
This fixes a couple of inconsistencies, for example would
FileSystemModel::icon_for() recognize image files uppercase extensions
but couldn't create thumbnails for them (any attempt to create a bitmap
from such files would fail).
If we try to read a sentinel byte but the stream is fresh out of data,
we have to take care of the stream error and bail out right away, or
we'll hit an assertion when exiting the function soon after.
Fixes#3486.
The pointers returned by malloc should always be 8-byte aligned on x86.
We were not consistent about this, as some ChunkedBlock size classes
were not divisible by 8.
This fixes some OOB reads found by running GCC in UE.
As per this line in the specification:
Unless stated otherwise, a document’s encoding is the utf-8 encoding,
content type is "application/xml", URL is "about:blank", origin is an
opaque origin, type is "xml", and its mode is "no-quirks".
https://dom.spec.whatwg.org/#document
This patch makes Page weakable and allows page-less frames to exist.
Page is single-owner, and Frame is multiple-owner, so it's not sound
for Frame to assume its containing Page will stick around for its own
entire lifetime.
Fixes#3976.
We can't just to_string() the PropertyName, it might be a symbol.
Instead to_value() it and then use to_string_without_side_effects() as
usual.
Fixes#4062.
Problem:
- The default constructor is is deleted because NonnullRefPtr has no
default constructor and there is a member variable of that type, but
the function is set as `= default`.
Solution:
- Remove the code because the function is actually deleted implicitly.
Previously we would iterate over all the live HeapBlocks in order to
learn if an arbitrary pointer-sized value was a pointer into a live
HeapBlock. This was quite time-consuming.
Instead of that, just put all the live HeapBlock*'s in a HashTable
and identify pointers by doing a bit-masked lookup into the table.
This is making me question the usefulness of application-global
shortcuts, but for now let's just prevent them from triggering while
you're looking at a modal message box..
This makes most operations thread safe, especially so that they
can safely be used in the Kernel. This includes obtaining a strong
reference from a weak reference, which now requires an explicit
call to WeakPtr::strong_ref(). Another major change is that
Weakable::make_weak_ref() may require the explicit target type.
Previously we used reinterpret_cast in WeakPtr, assuming that it
can be properly converted. But WeakPtr does not necessarily have
the knowledge to be able to do this. Instead, we now ask the class
itself to deliver a WeakPtr to the type that we want.
Also, WeakLink is no longer specific to a target type. The reason
for this is that we want to be able to safely convert e.g. WeakPtr<T>
to WeakPtr<U>, and before this we just reinterpret_cast the internal
WeakLink<T> to WeakLink<U>, which is a bold assumption that it would
actually produce the correct code. Instead, WeakLink now operates
on just a raw pointer and we only make those constructors/operators
available if we can verify that it can be safely cast.
In order to guarantee thread safety, we now use the least significant
bit in the pointer for locking purposes. This also means that only
properly aligned pointers can be used.
