Prior to funcref, a partial chunk of an invalid module was never needed,
but funcref allows a partially instantiated module to modify imported
tables with references to its own functions, which means we need to keep
the second module alive while that function reference is present within
the imported table.
This was tested by the spectests, but very rarely caught as our GC does
not behave particularly predictably, making it so the offending module
remains in memory just long enough to let the tests pass.
This commit makes it so all function references keep their respective
modules alive.
(cherry picked from commit a60ecea16abe62aae988ba877fdb98466d2919d3)
Gets fib(30) from 380ms to 340ms.
(cherry picked from commit a58704296cd36d3080dbf8f1be49300de2c25ea9;
amended to comment out two dbgln_if()s that no longer compile after
this change if WASM_TRACE_DEBUG is defined to 1 -- see comments on
LadybirdBrowser/ladybird#960. Likewise, one dbgln_if() in Wasi.cpp
got commented out as well)
C++ will jovially select the implicit conversion operator, even if it's
complete bogus, such as for unknown-size types or non-destructible
types. Therefore, all such conversions (which incur a copy) must
(unfortunately) be explicit so that non-copyable types continue to work.
The user is not required to keep the object alive, this commit makes it
so the lifetime of these functions is extended to match the Wasm module
it is imported into.
Fixes the crash in #907.
(cherry picked from commit 1fa528b19fb4551ebc6b4d33b408e456ba367acc)
As it's not uncommon for users to drop the module instance on the floor
after having grabbed the few exports they need to hold on to.
Fixes a few UAFs that show up as "invalid" accesses to
memory/tables/etc.
This change moves WebAssembly related data that was previously globally
accessible into the `WebAssemblyCache` object and creates one of these
per global object. This ensures that WebAssembly data cannot be
accessed across realms.
This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).
This commit is auto-generated:
$ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
Meta Ports Ladybird Tests Kernel)
$ perl -pie 's/\bDeprecatedString\b/ByteString/g;
s/deprecated_string/byte_string/g' $xs
$ clang-format --style=file -i \
$(git diff --name-only | grep \.cpp\|\.h)
$ gn format $(git ls-files '*.gn' '*.gni')
These wrappers will make it much easier to do various operations on the
different ArrayBuffer-related classes in LibWeb compared to the current
solution, which is to just accept a Handle<Object> everywhere (and use
"any" in the *.idl files).
Co-Authored-By: Matthew Olsson <mattco@serenityos.org>
