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Python API: prevent string tensor constants to avoid crash #33659

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amishijain123 wants to merge 2 commits into from
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Python API: prevent string tensor constants to avoid crash #33659

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Python API: prevent string tensor constants to avoid crash
amishijain123 Jan 17, 2026
9f38108
Merge branch 'master' into fix-string-constant-segfault
p-wysocki Jan 28, 2026
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7 changes: 7 additions & 0 deletions src/bindings/python/src/openvino/opset13/ops.py
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Expand Up @@ -354,6 +354,13 @@ def display_shared_memory_warning(warning_message: str) -> None:
if _dtype != _value.dtype:
display_shared_memory_warning(f"Converting value of {_value.dtype} to {_dtype}")
_value, _shared_memory = _value.astype(_dtype), False

# Block unsupported string tensor constants
if isinstance(_value, np.ndarray) and _value.dtype.kind in ("U", "S", "O"):
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@p-wysocki p-wysocki Jan 28, 2026

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Suggested change
if isinstance(_value, np.ndarray) and _value.dtype.kind in ("U", "S", "O"):
if isinstance(_value, np.ndarray) and _value.dtype.kind in ("U", "S", "O", "a"):

https://numpy.org/doc/stable/reference/arrays.dtypes.html

raise TypeError(
"String tensor constants are not supported in OpenVINO Python API"
)

# Create Constant itself:
return Constant(_value, shared_memory=_shared_memory)

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