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Go cannot allow lazy PLT resolution when calling between Go functions because the lazy resolution can use more stack than is available. Lazy resolution is disabled by passing -z now to the system linker, but unfortunately was only passed when linking to a Go shared library. That sounds fine, but the shared library containing the runtime is not linked to any other Go shared library but calls main.init and main.main via a PLT, and before this fix this did use lazy resolution. (For some reason this never caused a problem on intel, but it breaks on ppc64le). Fortunately the fix is very simple: always pass -z now to the system linker when dynamically linking Go. Change-Id: I7806d40aac80dcd1e56b95864d1cfeb1c42614e2 Reviewed-on: https://go-review.googlesource.com/15870 Reviewed-by: Ian Lance Taylor <iant@golang.org> |
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The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
For documentation about how to install and use Go, visit https://golang.org/ or load doc/install-source.html in your web browser.
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Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See https://golang.org/doc/install or doc/install.html for more details.