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[dev.unified] all: merge master (462b78f) into dev.unified
Merge List: + 2022-07-27 462b78f misc/cgo/test: use fewer threads in TestSetgidStress in long mode + 2022-07-27 055113e math/big: check buffer lengths in GobDecode + 2022-07-27 4248146 net: document UDPConn.ReadFromUDPAddrPort's AddrPort result more + 2022-07-26 faf4e97 net: fix WriteMsgUDPAddrPort addr handling + 2022-07-26 caa225d doc/go1.19: note that updated race syso files require GNU ld 2.26 + 2022-07-26 ceefd3a bytes: document that Reader.Reset affects the result of Size + 2022-07-26 3e97294 runtime/cgo: use frame address to set g0 stack bound + 2022-07-25 24dc27a cmd/compile: fix blank label code + 2022-07-25 9fcc8b2 runtime: fix runtime.Breakpoint() on windows/arm64 + 2022-07-25 795a88d cmd/go: add space after comma in 'go help test' + 2022-07-25 9eb3992 doc/go1.19: minor fixes + 2022-07-25 dcea1ee time: clarify documentation for allowed formats and add tests to prove them + 2022-07-25 37c8112 internal/fuzz: fix typo in function comments + 2022-07-25 850d547 doc/go1.19: expand crypto release notes + 2022-07-24 64f2829 runtime: fix typo in function comments + 2022-07-24 2ff563a cmd/compile/internal/noder: correct spelling errors for instantiation + 2022-07-22 c5da4fb cmd/compile: make jump table symbol local + 2022-07-22 774fa58 A+C: delete AUTHORS and CONTRIBUTORS + 2022-07-21 2d655fb unsafe: document when Sizeof/Offsetof/Alignof are not constant + 2022-07-21 076c3d7 net/http: remove accidental heading in Head documentation + 2022-07-21 c4a6d30 cmd/dist: enable race detector test on S390X + 2022-07-20 244c8b0 cmd/cgo: allow cgo to pass strings or []bytes bigger than 1<<30 + 2022-07-20 df38614 test: use go tool from tree, not path + 2022-07-20 bb1749b cmd/compile: improve GOAMD64=v1 violation test + 2022-07-19 176b63e crypto/internal/nistec,debug/gosym: fix typos Change-Id: I96e5d60039381691dffd841e58927f0afff8c544
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| // Copyright 2022 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| // Issue 53989: the use of jump table caused a function | ||
| // from the plugin jumps in the middle of the function | ||
| // to the function with the same name in the main | ||
| // executable. As these two functions may be compiled | ||
| // differently as plugin needs to be PIC, this causes | ||
| // crash. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "plugin" | ||
|
|
||
| "testplugin/issue53989/p" | ||
| ) | ||
|
|
||
| func main() { | ||
| p.Square(7) // call the function in main executable | ||
|
|
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| p, err := plugin.Open("issue53989.so") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| f, err := p.Lookup("Square") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| f.(func(int))(7) // call the plugin one | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // Copyright 2022 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package p | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "runtime" | ||
| ) | ||
|
|
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| var y int | ||
|
|
||
| //go:noinline | ||
| func Square(x int) { | ||
| var pc0, pc1 [1]uintptr | ||
| runtime.Callers(1, pc0[:]) // get PC at entry | ||
|
|
||
| // a switch using jump table | ||
| switch x { | ||
| case 1: | ||
| y = 1 | ||
| case 2: | ||
| y = 4 | ||
| case 3: | ||
| y = 9 | ||
| case 4: | ||
| y = 16 | ||
| case 5: | ||
| y = 25 | ||
| case 6: | ||
| y = 36 | ||
| case 7: | ||
| y = 49 | ||
| case 8: | ||
| y = 64 | ||
| default: | ||
| panic("too large") | ||
| } | ||
|
|
||
| // check PC is in the same function | ||
| runtime.Callers(1, pc1[:]) | ||
| if pc1[0] < pc0[0] || pc1[0] > pc0[0]+1000000 { | ||
| fmt.Printf("jump across DSO boundary. pc0=%x, pc1=%x\n", pc0[0], pc1[0]) | ||
| panic("FAIL") | ||
| } | ||
|
|
||
| if y != x*x { | ||
| fmt.Printf("x=%d y=%d!=%d\n", x, y, x*x) | ||
| panic("FAIL") | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // Copyright 2022 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package main | ||
|
|
||
| import "testplugin/issue53989/p" | ||
|
|
||
| func Square(x int) { // export Square for plugin | ||
| p.Square(x) | ||
| } | ||
|
|
||
| func main() {} |
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