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qmuntal b37c0602cd cmd/link: store COFF symbol complex type in the LSB instead of the MSB 
Microsoft's PE documentation is contradictory. It says that the
symbol's complex type [1] is stored in the pesym.Type most significant
byte (MSB), but MSVC, LLVM, and mingw store it in the 4 high bits of
the less significant byte (LSB). dumpbin understands both encoding.

Previous to CL 475355 the Go compiler mixed MSB and LSB encoding.
CL 475355 updated to compiler to use the MSB, but this causes problems
with mingw, which emits a warning when MSB is used.

For reference, LLVM also hit this issue long time ago:
https://github.com/llvm/llvm-project/issues/8692

[1] https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#type-representation

Change-Id: I7e750bde9c20e2c4c1c023203d7abd6fb26d9d30
Reviewed-on: https://go-review.googlesource.com/c/go/+/475855
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-14 10:02:09 +00:00
.github .github: suggest using private browsing in pkgsite template 2023-01-03 18:52:47 +00:00
api testing: add Testing function 2023-03-13 21:58:46 +00:00
doc doc: start draft Go 1.21 release notes 2023-02-22 18:53:00 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc runtime/cgo: add tsan sync for traceback function 2023-03-08 20:11:59 +00:00
src cmd/link: store COFF symbol complex type in the LSB instead of the MSB 2023-03-14 10:02:09 +00:00
test cmd/compile: instrinsify TrailingZeros{8,32,64} for 386 2023-03-14 08:10:32 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.