#983·sonic

textException 0xc000001d (STATUS_ILLEGAL_INSTRUCTION)

Author: ChrisSchinnerlCreated Sep 4, 2026Updated Sep 4, 2026

Describe the bug

We recently switched from encoding/json to sonic. A user reported today that the software crashed with

textException 0xc000001d (STATUS_ILLEGAL_INSTRUCTION)
in github.com/bytedance/sonic → _skip_one_fast (SSE)

OS: Windows 10 CPU: Intel Core 2 Quad Q9400 (only supports up to SSE4.1)

It seems like the CPU is missing the pclmulqdq instruction but nothing in sonic tests for it being available right now.