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programs using plugins
If a program imports the plugin package, the mechanisms in place for
detecting and deleting unused global map variables are no longer safe,
since it's possibly for a given global map var to be unreferenced in
the main program but referenced by a plugin. This patch changes the
linker to test for plugin use and to avoid removing any unused global
map variables if the main program could possibly load up a plugin.
Fixes #62505.
Updates #62430.
Change-Id: Ie00b18b681cb0d259e3c859ac947ade5778cd6c8
(cherry picked from commit 660620dd45dc11f2d889add79bedf2dc771c7d04)
Reviewed-on: https://go-review.googlesource.com/c/go/+/526575
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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String symbol names could contain weird characters as we put the
string literal into the symbol name. So it may appear to need
mangling. However, as string symbols are grouped into a single
"go:string.*" symbol, the individual symbol names actually don't
matter. So don't mangle them.
Also make the mangling code more defensive in case of weird
symbol names.
Updates #62098.
Fixes #62140.
Change-Id: I533012567a9fffab69debda934f426421c7abb04
Reviewed-on: https://go-review.googlesource.com/c/go/+/520856
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
(cherry picked from commit b65e34f03814889f0edd3ddd9778864762511443)
Reviewed-on: https://go-review.googlesource.com/c/go/+/520857
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In plugin mode, we mangle the type symbol name so it doesn't
contain characters that may confuse the external linker. With
generics, instantiated function name includes type names, so it
may also contain such characters and so also needs to be mangled.
Fixes #58800.
Change-Id: Ibb08c95b89b8a815ccef98193d3a025e9d4756cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/500095
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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This moves most misc/cgo tests to cmd/cgo/internal. This is mostly a
trivial rename and updating dist/test.go for the new paths, plus
excluding these packages from regular dist test registration. A few
tests were sensitive to what path they ran in, so we update those.
This will let these tests access facilities in internal/testenv.
For #37486.
Change-Id: I3ed417c7c22d9b667f2767c0cb1f59118fcd4af6
Reviewed-on: https://go-review.googlesource.com/c/go/+/492720
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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