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runtime: define dummy msanmove

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In msan mode we instrument code with msan* functions, including
msanmove. In some configurations the code is instrumented by the
compiler but msan is not actually linked in, so we need dummy
definitions for those functions so the program links. msanmove is
newly added in CL 270859 but a dummy definition in msan0.go was
not added, causing link failures. Add it.

Change-Id: I91f8e749919f57f1182e90b43412b0282cf4767c
Reviewed-on: https://go-review.googlesource.com/c/go/+/285955
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Cherry Zhang 2021-01-22 16:35:21 -05:00
parent 3a778ff50f
commit eb21b31e48
1 changed files with 5 additions and 4 deletions
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src/runtime/msan0.go
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@ -20,3 +20,4 @@ func msanread(addr unsafe.Pointer, sz uintptr) { throw("msan") }
func msanwrite(addr unsafe.Pointer, sz uintptr) { throw("msan") } func msanwrite(addr unsafe.Pointer, sz uintptr) { throw("msan") }
func msanmalloc(addr unsafe.Pointer, sz uintptr) { throw("msan") } func msanmalloc(addr unsafe.Pointer, sz uintptr) { throw("msan") }
func msanfree(addr unsafe.Pointer, sz uintptr) { throw("msan") } func msanfree(addr unsafe.Pointer, sz uintptr) { throw("msan") }
func msanmove(dst, src unsafe.Pointer, sz uintptr) { throw("msan") }