Description
Bug report
Stensil defines body as bytearray
cpython/Tools/jit/_stencils.py
Lines 189 to 197 in 1758447
But, it is passed to functions that expect bytes, this now works for historic reasons. But, since mypy@2.0 or mypy@1.5 with --strict-bytes turned on - it won't. See https://github.com/python/mypy/blob/master/CHANGELOG.md#--strict-bytes
Examples:
diff --git Tools/jit/_stencils.py Tools/jit/_stencils.py
index ee761a73fa8..8b6957f8bdb 100644
--- Tools/jit/_stencils.py
+++ Tools/jit/_stencils.py
@@ -141,7 +141,11 @@ class Hole:
def __post_init__(self) -> None:
self.func = _PATCH_FUNCS[self.kind]
- def fold(self, other: typing.Self, body: bytes) -> typing.Self | None:
+ def fold(
+ self,
+ other: typing.Self,
+ body: bytes | bytearray,
+ ) -> typing.Self | None:
"""Combine two holes into a single hole, if possible."""
instruction_a = int.from_bytes(
body[self.offset : self.offset + 4], byteorder=sys.byteorder
diff --git Tools/jit/_targets.py Tools/jit/_targets.py
index d23ced19842..4015fc564ad 100644
--- Tools/jit/_targets.py
+++ Tools/jit/_targets.py
@@ -97,7 +97,7 @@ def _handle_section(self, section: _S, group: _stencils.StencilGroup) -> None:
raise NotImplementedError(type(self))
def _handle_relocation(
- self, base: int, relocation: _R, raw: bytes
+ self, base: int, relocation: _R, raw: bytes | bytearray
) -> _stencils.Hole:
raise NotImplementedError(type(self))
@@ -257,7 +257,7 @@ def _unwrap_dllimport(self, name: str) -> tuple[_stencils.HoleValue, str | None]
return _stencils.symbol_to_value(name)
def _handle_relocation(
- self, base: int, relocation: _schema.COFFRelocation, raw: bytes
+ self, base: int, relocation: _schema.COFFRelocation, raw: bytes | bytearray
) -> _stencils.Hole:
match relocation:
case {
@@ -348,7 +348,10 @@ def _handle_section(
}, section_type
def _handle_relocation(
- self, base: int, relocation: _schema.ELFRelocation, raw: bytes
+ self,
+ base: int,
+ relocation: _schema.ELFRelocation,
+ raw: bytes | bytearray,
) -> _stencils.Hole:
symbol: str | None
match relocation:
@@ -424,7 +427,10 @@ def _handle_section(
stencil.holes.append(hole)
def _handle_relocation(
- self, base: int, relocation: _schema.MachORelocation, raw: bytes
+ self,
+ base: int,
+ relocation: _schema.MachORelocation,
+ raw: bytes | bytearray,
) -> _stencils.Hole:
symbol: str | None
match relocation:I propose to proactively fix this by using bytes | bytearray. Why? Because this union won't allow to mutate byte objects. Why not collections.abc.Buffer? jit requires python3.11+, and Buffer is available since 3.12, we also don't want to add typing_extensions package as a single dependency. We also don't want to do some cool TYPE_CHECKING hacks, when we can just use a union.