| commit | 9fe9853ae5641eda4cfa58015bd0bcedb99c12cb | [log] [tgz] |
|---|---|---|
| author | Clément Chigot <clement.chigot@atos.net> | Tue Oct 16 15:59:43 2018 +0200 |
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | Mon Nov 26 14:13:53 2018 +0000 |
| tree | 7d9f5dc6ec5ab99abe48eb30c009291dabe02e5b | |
| parent | 041526c6ef669743afc6c4b757b95011f1475d1a [diff] |
cmd/compile: fix nilcheck for AIX This commit adapts compile tool to create correct nilchecks for AIX. AIX allows to load a nil pointer. Therefore, the default nilcheck which issues a load must be replaced by a CMP instruction followed by a store at 0x0 if the value is nil. The store will trigger a SIGSEGV as on others OS. The nilcheck algorithm must be adapted to do not remove nilcheck if it's only a read. Stores are detected with v.Type.IsMemory(). Tests related to nilptr must be adapted to the previous changements. nilptr.go cannot be used as it's because the AIX address space starts at 1<<32. Change-Id: I9f5aaf0b7e185d736a9b119c0ed2fe4e5bd1e7af Reviewed-on: https://go-review.googlesource.com/c/144538 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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