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One more proper implementation and one less FIXME.
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To ensure everything works as expected, a unit test was added with
multiple scenarios.
This binary has to have the SetUID flag, and we also bind-mount the
/usr/Tests directory to allow running of SetUID binaries.
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This method will eventually be removed once all native functions are
converted to ThrowCompletionOr
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The old versions were renamed to JS_DECLARE_OLD_NATIVE_FUNCTION and
JS_DEFINE_OLD_NATIVE_FUNCTION, and will be eventually removed once all
native functions were converted to the new format.
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Clang 13 now correctly handles `__builtin_FILE()` and
`-ffile-prefix-map` being specified together, so this test should fully
pass.
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This function converts a single wide character into its multibyte
representation (UTF-8 in our case). It is called from libc++'s
`std::basic_ostream<wchar_t>::flush`, which gets called at program exit
from a global destructor in order to flush `std::wcout`.
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Also update get_function_name() to use ThrowCompletionOr, but this is
not a standard AO and should be refactored out of existence eventually.
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These tests don't pass (at least not without KVM) at the moment,
so let's not run them on CI.
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Consider the situation where two shared libraries libA and libB, both
depending (as in having a NEEDED dtag) on libC. libA is first
dlopen()-ed, which produces libC to be mapped and linked. When libB is
dlopen()-ed the DynamicLinker would re-map and re-link libC though,
causing any previous references to its old location to be invalid. And
if libA's PLT has been patched to point to libC's symbols, then any
further invocations to libA will cause the code to jump to a virtual
address that isn't mapped anymore, therefore causing a crash. This
situation was reported in #10014, although the setup was more convolved
in the ticket.
This commit fixes the issue by distinguishing between a main program
loading being performed by Loader.so, and a dlopen() call. The main
difference between these two cases is that in the former the
s_globals_objects maps is always empty, while in the latter it might
already contain dependencies for the library being dlopen()-ed. Hence,
when collecting dependencies to map and link, dlopen() should skip those
that are present in the global map to avoid the issue described above.
With this patch the original issue seen in #10014 is gone, with all
python3 modules (so far) loading correctly.
A unit test reproducing a simplified issue is also included in this
commit. The unit test includes the building of two dynamic libraries A
and B with both depending on libline.so (and B also depending on A); the
test then dlopen()s libA, invokes one its function, then does the same
with libB.
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This adds a passing test of an insert statement that contains no column
names and assumes full tuple input
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This enables tests to check that a statement is erroneous, we could not
do so by only calling `execute()` since it asserted that no errors
occurred.
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Generate a sorted, compressed series of ranges in a match table for
character classes, and use a binary search to find the matches.
This is about a 3-4x speedup for character class match performance. :^)
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Also fixes that it tried to make substrings past the end of the source
if we overran the source length.
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This is as the spec would require you to do it and necessary for changes
to come in the following commits.
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I noticed that Variant<Empty, …> is a somewhat common pattern while
working on #10080, and this will simplify a few use-cases. :^)
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The callback should be called as soon as the connection is established,
and if we actually set the callback when it already is, we expect it to
be called immediately.
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Using StringView instead of C strings is basically always preferable.
The only reason to use a C string is because you are calling a C API.
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