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(Claude Code; Opus 4.6)

Windows Stack Memory Corruption Investigation

Summary

Runtime stack memory corruption on Windows amd64 causes a DEP violation (Exception 0xc0000005 code 0x8) when a goroutine jumps to a corrupted return address. The corruption always overwrites the high 32 bits of a return address, replacing a valid code pointer (e.g. 0x00007ff6XXXXXXXX) with a value whose high 32 bits are a