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go / go / 689947d5652e51980fbfc7b350871fe2baa06a74
commit689947d5652e51980fbfc7b350871fe2baa06a74[log] [tgz]
authorIan Lance Taylor <iant@golang.org>Tue Nov 01 14:13:34 2016 -0700
committerIan Lance Taylor <iant@golang.org>Tue Nov 01 23:06:24 2016 +0000
tree3a42dbce9ec8f9de1167c565a99b9f740bdf02e0
parent3be166dc70bf3539539bc6762aff9660c3dbf229 [diff]
cmd/cgo: only record typedef name for pointer to struct

In a function argument, we handle a typedef for a pointer specially,
using the pointer type rather than the typedef, to permit the Go calls
to match the laxer type conversions permitted in C. We record the
typedef so that we use that type in the C code, in case it has a special
attribute. However, using the typedef is wrong when using a pointer to a
basic type, because the C code may sometimes use the typedef and
sometimes not, and using the typedef in all cases will cause incorrect
type errors on the Go side. Fortunately we only really need to use the
typedef when pointing to a struct/union/class, and in such a case
confusion is unlikely.

Fixes #17723.

Change-Id: Id2eaeb156faeaf2e8eb9cf0b8f95b44caf8cfbd2
Reviewed-on: https://go-review.googlesource.com/32536
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2 files changed
tree: 3a42dbce9ec8f9de1167c565a99b9f740bdf02e0
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
README.md

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