| commit | 96983721d42e9e238ea9fec720849ab7bb616122 | [log] [tgz] |
|---|---|---|
| author | Keith Randall <khr@golang.org> | Wed Aug 26 14:17:35 2020 -0700 |
| committer | Dmitri Shuralyov <dmitshur@golang.org> | Fri Oct 09 17:25:11 2020 +0000 |
| tree | 1664581ba93f3ffb6401e7cd90d0ff9f41ee7280 | |
| parent | 142027888a7d3da0494d77581166f1d120317864 [diff] |
[release-branch.go1.15] cmd/cgo: use go:notinheap for anonymous structs They can't reasonably be allocated on the heap. Not a huge deal, but it has an interesting and useful side effect. After CL 249917, the compiler and runtime treat pointers to go:notinheap types as uintptrs instead of real pointers (no write barrier, not processed during stack scanning, ...). That feature is exactly what we want for cgo to fix #40954. All the cases we have of pointers declared in C, but which might actually be filled with non-pointer data, are of this form (JNI's jobject heirarch, Darwin's CFType heirarchy, ...). Fixes #40954 Change-Id: I44a3b9bc2513d4287107e39d0cbbd0efd46a3aae Reviewed-on: https://go-review.googlesource.com/c/go/+/250940 Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Trust: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-on: https://go-review.googlesource.com/c/go/+/255321
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