This fixes an issue where private element values were not always
protected from GC. I found two instances where this was happening:
- ECMAScriptFunctionObject did not mark m_private_methods
- ClassDefinitionEvaluation had two Vector<PrivateElement> that were
opaque to the garbage collector, and so if GC occurred while
constructing a class instance, some or all of its private elements
could get incorrectly collected.
Made a slight logic error in 95d69fc which meant the dummy range would
be returned even if the source_range_storage contained an actual source
range. This corrects that by resolving the null unrealized range to a
dummy range, and storing that. It then can be treated as a normal source
range.
Previously, source_range() could crash attempting to read from a null
unrealized->source_code pointer. It looks like the previous behaviour
here was to return a dummy source range, so this commit restores that.
With this loading https://github.com/SerenityOS/serenity works again.
Instead of eagerly populating the stack trace with a textual
representation of every call frame, just store the raw source code range
(code, start offset, end offset). From that, we can generate the full
rich backtrace when requested, and save ourselves the trouble otherwise.
This makes test-wasm take ~7 seconds on my machine instead of ~60. :^)
This is a clear sign that they want to use a UnixDateTime instead.
This also adds support for placing durations and date times into SQL
databases via their millisecond offset to UTC.
That's what this class really is; in fact that's what the first line of
the comment says it is.
This commit does not rename the main files, since those will contain
other time-related classes in a little bit.
It's not safe to allocate from the GC heap while in the constructor of a
GC heap cell. (Because if this ends up triggering a collection, we may
end up trying to call through an uninitialized vtable).
This was already done safely in the initialize() virtual in much of
LibJS and LibWeb. This patch moves the logic for prototypes, mixins,
and CSSStyleDeclaration as well.
Fixes a long-standing GC crash that was pretty easy to reproduce by
refreshing https://vercel.com/
GCC 13 produces the following true positive warnings:
- `-Wredundant-move` when trying to move `result->tooltip()`, which
is a const reference in `Assistant/main.cpp`
- `-Wuse-after-free` when freeing an environment variable before
removing it from `s_malloced_environment_variables`
- `-Wdangling-pointer` when storing an AST node's `this` pointer to the
interpreter's node stack in LibJS. This is not actually an issue, as
it is popped when the scope ends, but GCC has no way of telling this.
Unwind contexts now remember the lexical and variable environments in
effect when they were created. If an exception is caught, we revert
to those environments in the running execution context.
For `try` statements with a `catch` clause, we were generating *two*
"next" blocks. This meant that not throwing an exception would cause
execution to stop.
Fix this by using the "next" block pointer for the try "entry" and
"handler" blocks.
This fixes an issue where object environments (from `with` statement)
were bypassed by statements like `var x = 1` (for objects with an `x`
property).
Fixes 25 tests in test262. :^)
"The official project language is American English […]."
5d2e915623/CONTRIBUTING.md (L30)
Here's a short statistic of the occurrences of the word "behavio(u)r":
$ git grep -IPioh 'behaviou?r' | sort | uniq -c | sort -n
2 BEHAVIOR
24 Behaviour
32 behaviour
407 Behavior
992 behavior
Therefore, it is clear that "behaviour" (56 occurrences) should be
regarded a typo, and "behavior" (1401 occurrences) should be preferred.
Note that The occurrences in LibJS are intentionally NOT changed,
because there are taken verbatim from the specification. Hence:
$ git grep -IPioh 'behaviou?r' | sort | uniq -c | sort -n
2 BEHAVIOR
10 behaviour
24 Behaviour
407 Behavior
1014 behavior
If proxy has an undefined trap, it will fallback to target's
internal_has_property, which will then check target's prototype for
the requested property. If Proxy's prototype is set to the Proxy itself,
it will check in itself in a loop, causing a stack overflow.
This brings the function name in line with how we usually name those
functions, which is with a `read_` or `write_` prefix depending on what
they do.
While at it, make the internal `_impl` function private and not-virtual,
since there is no good reason to ever override that function.
