errno 84 (EOVERFLOW): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: A valid value cannot be represented in the destination type or result field used by the interface.

Could be also:
Constant	Type	OS
ERROR_OUT_OF_STRUCTURES	Win32 error	Windows
EILSEQ	errno	Linux
ELIBBAD	errno	Solaris
LM_SERVER_INTERNAL_ERROR	BugCheck Code	Windows

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EILSEQ	ELIBBAD

EOVERFLOW

The data may be valid, but the caller cannot represent it

EOVERFLOW is a representability failure. The filesystem, object, or kernel result may be valid, while the structure, integer type, time field, offset, identifier, or conversion target used by the caller is too narrow to hold it.

This differs from ERANGE, which is often associated with numeric conversion or mathematical results. For system interfaces, inspect ABI width, structure layout, large-file support, and the exact member that overflowed. Casting after the call cannot recover information that was rejected before a result could be delivered.

What to inspect

Architecture, SDK, and the widths of off_t, time, inode, UID/GID, and other result fields consumed by the caller.
The actual object size or identifier that triggered the failure, if a wider diagnostic path is available.
Whether a legacy interface was selected instead of a newer API with an explicitly wide result type.

References

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