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Cgo writes C function declarations pretending every arg is a pointer. If the C function is deferred, it does not inhibit stack copying on split. The stack copying code believes the C declaration, possibly misinterpreting integers as pointers. Probably the right fix for Go 1.3 is to make deferred C functions inhibit stack copying. For Go 1.4 and beyond we probably need to make cgo generate Go code for 6g here, not C code for 6c. Update #7695 LGTM=khr R=khr CC=golang-codereviews https://golang.org/cl/83820043 |
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| backdoor.go | ||
| runtime.c | ||
| runtime_gccgo.c | ||