On the compiler side, `Borrow` ought to use extra inhabitants from its value
representation, or at least the null pointer for the pointer representation.
On the runtime side, the choice of representation needs to take size into
account.
String.== performs normalization, which brings in the Unicode tables.
Don't use it for Bool's conformance to LosslessStringConvertible,
which doesn't need it. It's only the "true" and "false" strings that
matter.
Improve debugging from core dumps for Embedded Swift by using condfail
rather than trap within _debugPrecondition, and make the call stack
transparent enough that we promote these out to callers.
Fixes rdar://159471659.
Tweaked the comment in `Runtime/Config.h`.
Fixed a couple of incorrect ARM64 instruction mnemonics. This still needs
testing on ARM64 Windows.
Fixed an out-of-date comment in `swift-backtrace`.
Use a macro in `Backtrace.cpp` to guarantee we don't overrun the buffer,
and in the process simplify the code slightly.
rdar://101623384
We can't use `|| true` on Windows, so use `not` instead.
Also, on Windows, program names get downcased because `lit` uses
`os.path.normcase()`, so if we have program names in the output,
make sure the programs are already lower-case.
Fix up the stack overflow test to match the expected output.
Plus fix the macOS build to always build for macOS 26.0 or above.
rdar://101623384
We should only add the assembly files if we're actually going
to build the `Runtime` module. This was tripping up iOS/tvOS/
watchOS builds.
rdar://101623384
Also, fix two files that managed to use Windows API without
importing `WinSDK` as a result of the leakage caused by including
`windows.h` from `codeview.h`.
rdar://101623384
`swift_slowAlloc()` and related functions assume that `malloc(0)` and `aligned_alloc(0)` return non-`NULL` pointers. The C standards allow implementations to return `NULL` when the allocation size is `0`.
This PR implements a check for `0` that instead allocates `1`. The cost of the check is negligible next to the cost of actually allocating, but we'll mark it `SWIFT_UNLIKELY` just in case.
Resolves rdar://169304909.
We have a private oslog library to test optimizations specific for oslog.
Add -assert-config DisableReplacement to this library similar to the real oslog library.
This prevents surprizing optimizer regressions.
Hitting `D` when in the backtracer should do the same on Windows
that it does on macOS, namely launching `lldb` and attaching it to
the crashed program.
rdar://101623384
On-crash backtracing is basically there for 64-bit Windows. It
won't work on 32-bit because of a Swift compiler issue, and there
is a little more work to do yet, but it is now working!
rdar://101623384
Also fix things so that we use the right path separator, depending
on image type, and add support for `DW_AT_specification` attributes
on `DW_TAG_subprogram` entries.
rdar://101623384
This doesn't have a working symbolicator yet, but it does build and
it can obtain a basic backtrace.
It also doesn't include a working `swift-backtrace` program yet.
rdar://101623384
Alastair Houghton
Joe Groff
Clinton Nkwocha
Stephen Canon
Alex Martini
Finagolfin
Doug Gregor
Jesse Zamora
Meghana Gupta
Kavon Farvardin
Jonathan Grynspan
Meghana Gupta
Susana Monteiro
Mike Ash
Konrad `ktoso` Malawski