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go/misc/cgo/testshared/testdata
Cherry Zhang 98f8454a73 cmd/link: don't decode type symbol in shared library in deadcode
In the linker's deadcode pass we decode type symbols for
interface satisfaction analysis. When linking against Go shared
libraries, the type symbol may come from a shared library, so it
doesn't have data in the current module being linked, so we cannot
decode it. We already have code to skip DYNIMPORT symbols. However,
this doesn't actually work, because at that point the type symbols'
names haven't been mangled, whereas they may be mangled in the
shared library. So the symbol definition (in shared library) and
reference (in current module) haven't been connected.

Skip decoding type symbols of type Sxxx (along with DYNIMPORT)
when linkShared.

Note: we cannot skip all type symbols, as we still need to mark
unexported methods defined in the current module.

Fixes #44031.

Change-Id: I833d19a060c94edbd6fc448172358f9a7d760657
Reviewed-on: https://go-review.googlesource.com/c/go/+/288496
Trust: Cherry Zhang <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-02-02 16:00:58 +00:00
..
dep2
dep3
depBase
division
exe
exe2
exe3
execgo
explicit
gcdata cmd/link: fix GC data reading from shared library (attempt 2) 2020-07-01 14:41:56 +00:00
global
globallib
iface
iface_a
iface_b
iface_i
implicit
implicitcmd
issue25065
issue30768 cmd/link: put shlib ".type" functions in internal ABI 2019-07-15 22:54:39 +00:00
issue39777 cmd/link: skip zero values in fingerprint check 2020-06-23 18:38:32 +00:00
issue44031 cmd/link: don't decode type symbol in shared library in deadcode 2021-02-02 16:00:58 +00:00
trivial