| commit | c65647d6204531e93c19ea2dba01ff13d1b8ef31 | [log] [tgz] |
|---|---|---|
| author | Matthew Dempsky <mdempsky@google.com> | Tue Apr 19 15:02:06 2016 -0700 |
| committer | Russ Cox <rsc@golang.org> | Wed May 18 14:01:22 2016 +0000 |
| tree | c74f441438a59ec6f08640a3219e018d85460497 | |
| parent | c6a5b3602a87b2d1321ad11aa64b7f588bbb683b [diff] |
cmd/compile: handle unsafe.Pointer(f()) correctly
Previously statements like
f(unsafe.Pointer(g()), int(h()))
would be reordered into a sequence of statements like
autotmp_g := g()
autotmp_h := h()
f(unsafe.Pointer(autotmp_g), int(autotmp_h))
which can leave g's temporary value on the stack as a uintptr, rather
than an unsafe.Pointer. Instead, recognize uintptr-to-unsafe.Pointer
conversions when reordering function calls to instead produce:
autotmp_g := unsafe.Pointer(g())
autotmp_h := h()
f(autotmp_g, int(autotmp_h))
Fixes #15329.
Change-Id: I2cdbd89d233d0d5c94791513a9fd5fd958d11ed5
Reviewed-on: https://go-review.googlesource.com/22273
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
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