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Merged
methane merged 2 commits into from
Jun 18, 2026
+16 −3
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release v1.2.1 #698

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1cebba7
release v1.2.1
methane Jun 18, 2026
1cd90a1
Potential fix for pull request finding
methane Jun 18, 2026
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9 changes: 9 additions & 0 deletions CHANGELOG.md
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@@ -1,3 +1,12 @@
# 1.2.1

Release Date: 2026-06-19

Fix a segfault when calling `Unpacker.unpack()` or `Unpacker.skip()` after an unpacking failure.
But note that reusing the same `Unpacker` instance after an unpacking failure is not supported.
Please create a new `Unpacker` instance instead. GHSA-6v7p-g79w-8964


# 1.2.0

Release Date: 2026-06-11
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6 changes: 5 additions & 1 deletion README.md
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Expand Up @@ -72,6 +72,10 @@ for unpacked in unpacker:
print(unpacked)
```

> [!IMPORTANT]
> If `Unpacker.unpack()` stops with an exception other than `OutOfData`, that `Unpacker` cannot be reused.
> Create a new `Unpacker` when reading another stream.


### Packing/unpacking of custom data types

Expand Down Expand Up @@ -220,7 +224,7 @@ When upgrading from msgpack-0.4 or earlier, do `pip uninstall msgpack-python` be

* The extension module no longer supports Python 2.
The pure Python implementation (`msgpack.fallback`) is used for Python 2.

* msgpack 1.0.6 drops official support of Python 2.7, as pip and
GitHub Action "setup-python" no longer supports Python 2.7.

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4 changes: 2 additions & 2 deletions msgpack/__init__.py
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Expand Up @@ -4,8 +4,8 @@
from .exceptions import * # noqa: F403
from .ext import ExtType, Timestamp

version = (1, 2, 0)
__version__ = "1.2.0"
version = (1, 2, 1)
__version__ = "1.2.1"


if os.environ.get("MSGPACK_PUREPYTHON"):
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