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Russ Cox 14d2ee1d00 runtime: make continuation pc available to stack walk 
The 'continuation pc' is where the frame will continue
execution, if anywhere. For a frame that stopped execution
due to a CALL instruction, the continuation pc is immediately
after the CALL. But for a frame that stopped execution due to
a fault, the continuation pc is the pc after the most recent CALL
to deferproc in that frame, or else 0. That is where execution
will continue, if anywhere.

The liveness information is only recorded for CALL instructions.
This change makes sure that we never look for liveness information
except for CALL instructions.

Using a valid PC fixes crashes when a garbage collection or
stack copying tries to process a stack frame that has faulted.

Record continuation pc in heapdump (format change).

Fixes #8048.

LGTM=iant, khr
R=khr, iant, dvyukov
CC=golang-codereviews, r
https://golang.org/cl/100870044
 		2014-05-31 10:10:12 -04:00
..
bench test/bench/shootout: support windows 2014-05-09 14:34:50 -07:00
bugs cmd/gc: fix wrong interaction between inlining and embedded builtins. 2012-12-22 19:16:31 +01:00
chan test/chan: avoid wrap-around in memstats comparison 2013-09-20 17:27:56 -07:00
ddd2.dir test: convert tests to run.go whenever possible. 2012-10-10 22:35:27 +02:00
dwarf test: make rundir match compiledir/errorcheckdir. 2013-01-11 22:00:48 +01:00
fixedbugs runtime: make continuation pc available to stack walk 2014-05-31 10:10:12 -04:00
import2.dir test: convert more tests to rundir/compiledir conventions 2012-10-07 23:22:01 +02:00
import4.dir test: match gccgo import error messages 2013-12-12 19:02:11 -08:00
interface cmd/gc: don't attempt to generate wrappers for blank interface methods 2013-08-19 11:53:34 +10:00
ken
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method4.dir cmd/gc: do not omit wrapper for expression (interface{...}).F 2014-01-07 13:26:48 +01:00
safe test: adapt old-style tests to new flag parsing. 2013-01-11 22:05:46 +01:00
stress test/stress: fix a goroutine leak in threadRing stresstest 2013-06-03 07:07:31 -07:00
syntax test: match gccgo error messages 2013-12-12 17:18:12 -08:00
64bit.go cmd/gc: Error out on division by constant zero. 2013-01-30 20:21:08 +01:00
235.go
…
alias.go
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alias1.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
append.go
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args.go test: run some more tests by default 2012-11-08 09:04:27 -08:00
assign.go
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assign1.go
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bigalg.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
bigmap.go runtime: handle and test large map values 2012-05-24 22:41:07 -04:00
blank.go test: revert changes made for Go SSA interpreter test. 2013-10-08 14:36:20 -04:00
blank1.go test: match gccgo error messages for blank1.go 2013-09-28 15:19:05 -07:00
bom.go gc: initial BOM is legal. 2012-09-10 13:03:07 -07:00
bombad.go gc: initial BOM is legal. 2012-09-10 13:03:07 -07:00
bounds.go test: prepare for 64-bit ints 2012-09-24 00:06:41 -04:00
chancap.go
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char_lit.go
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char_lit1.go
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closedchan.go
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closure.go test: enforce 1 proc in the test 2012-07-01 21:59:50 +04:00
cmp.go cmd/gc: do not nop-convert equivalent but different interface types. 2014-02-27 08:07:50 +01:00
cmp6.go cmd/gc: do not consider length zero arrays as comparable. 2014-01-31 00:30:56 +01:00
cmplx.go cmd/gc: reject complex calls with mismatched argument types. 2013-03-11 22:55:14 +01:00
cmplxdivide.c
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cmplxdivide.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
cmplxdivide1.go
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complit.go
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complit1.go
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compos.go
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const.go exp/ssa/interp: (#6 of 5): test interpretation of SSA form of $GOROOT/test/*.go. 2013-02-21 12:48:38 -05:00
const1.go test: match gccgo error messages 2013-12-12 17:18:12 -08:00
const2.go test: match gccgo error messages 2012-09-28 08:30:30 -07:00
const3.go
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const4.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
const5.go cmd/gc: reject builtin function calls in len(fixed array) constants 2014-04-03 19:04:33 -04:00
const6.go test: match gccgo error strings. 2013-06-26 18:05:02 +02:00
convT2X.go cmd/gc: cache itab lookup in convT2I. 2012-07-03 09:09:05 +10:00
convert.go
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convert1.go
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convert3.go
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convlit.go
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convlit1.go
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copy.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
crlf.go
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ddd.go
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ddd1.go test: match gccgo error messages 2012-09-28 08:30:30 -07:00
ddd2.go test: convert tests to run.go whenever possible. 2012-10-10 22:35:27 +02:00
decl.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
declbad.go test: correct type in declbad.go 2012-10-07 21:52:57 +02:00
defer.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
deferfin.go runtime: combine small NoScan allocations 2014-01-24 22:35:11 +04:00
deferprint.go
…
deferprint.out
…
divide.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
divmod.go all: fix a few spelling errors in source comments 2013-12-27 08:59:02 -08:00
empty.go
…
env.go
…
eof.go
…
eof1.go
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errchk test/errchk: use "#!/usr/bin/env perl" shebang line 2013-05-23 04:41:22 +08:00
escape.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
escape2.go cmd/gc: fix escape analysis for slice of array 2014-05-12 14:45:05 -04:00
escape3.go
…
escape4.go cmd/gc: fix escape analysis bug 2012-09-24 15:53:12 -04:00
escape5.go cmd/gc: distinguish unnamed vs blank-named return variables better 2014-02-13 20:59:39 -05:00
float_lit.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
float_lit2.go test: fix two typos in float_lit2.go 2014-05-21 17:19:12 -04:00
float_lit3.go test/float_lit2.go: rewrite to test values near boundaries 2014-05-21 17:12:06 -04:00
floatcmp.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
for.go
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func.go
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func1.go cmd/gc: ensure unique parameter and result names in function types 2013-03-15 15:24:13 -04:00
func2.go
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func3.go
…
func4.go
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func5.go
…
func6.go
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func7.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
func8.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
funcdup.go test: match gccgo error messages 2013-12-12 17:18:12 -08:00
funcdup2.go test: match gccgo error messages 2013-12-12 17:18:12 -08:00
gc.go
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gc1.go
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gc2.go build: make nacl pass 2014-05-20 12:10:19 -04:00
gcstring.go runtime: fix empty string handling in garbage collector 2014-03-11 23:58:39 -04:00
golden.out cmd/gc: do not generate code for var _ = ... unless necessary 2012-12-30 12:01:53 -05:00
goprint.go test: make goprint.go wait longer for go its routine to execute 2013-04-12 16:04:19 -07:00
goprint.out
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goto.go
…
helloworld.go
…
helloworld.out
…
if.go
…
import.go
…
import1.go test: match gccgo import error messages 2013-12-12 19:02:11 -08:00
import2.go test: convert more tests to rundir/compiledir conventions 2012-10-07 23:22:01 +02:00
import4.go test: convert more tests to rundir/compiledir conventions 2012-10-07 23:22:01 +02:00
import5.go
…
index.go test: recognize gccgo error message in index.go 2013-09-27 20:38:52 -07:00
index0.go test: run index test by default 2012-11-07 12:33:54 -08:00
index1.go test: run index test by default 2012-11-07 12:33:54 -08:00
index2.go test: run index test by default 2012-11-07 12:33:54 -08:00
indirect.go
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indirect1.go
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init.go
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init1.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
initcomma.go
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initialize.go
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initializerr.go test: add "duplicate" struct map key test 2012-12-17 11:05:58 -05:00
int_lit.go
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intcvt.go
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iota.go
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label.go
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label1.go
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linkx.go test: expand run.go's errorcheck, make clear which bugs run 2012-09-23 13:16:14 -04:00
literal.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
live.go cmd/gc: fix x=x crash 2014-05-29 13:47:31 -04:00
live1.go cmd/gc: correct liveness for fat variables 2014-02-15 10:58:55 -05:00
mallocfin.go
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map.go test: fix flaky NaN-key map complexity test 2013-04-07 11:56:15 -07:00
map1.go cmd/gc: fix type checking loop 2012-06-07 03:06:40 -04:00
mapnan.go test/mapnan: use time.Now instead of syscall.Getrusage 2013-10-22 18:33:37 -04:00
method.go test: a number of fixes. 2013-02-11 18:20:52 -05:00
method1.go
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method2.go cmd/gc: fix method values whose receiver is an unnamed interface. 2013-08-29 10:00:58 +02:00
method3.go
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method4.go test: convert more tests to rundir/compiledir conventions 2012-10-07 23:22:01 +02:00
method5.go cmd/gc: implement method values 2013-03-20 17:11:09 -04:00
named.go
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named1.go
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nil.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
nilcheck.go cmd/gc: &x panics if x does 2013-08-15 14:38:32 -04:00
nilptr.go test/nilptr: add more tests 2013-09-05 23:06:34 -04:00
nilptr2.go test: revert changes made for Go SSA interpreter test. 2013-10-08 14:36:20 -04:00
nilptr3.go cmd/gc: correct handling of globals, func args, results 2014-05-15 15:34:53 -04:00
nilptr4.go cmd/gc: fix bad checknil with ints on 32 bit compilers 2014-02-26 12:25:13 -08:00
nosplit.go build: make nacl pass 2014-05-20 12:10:19 -04:00
nul1.go test: run some more tests by default 2012-11-08 09:04:27 -08:00
parentype.go
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peano.go
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printbig.go
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printbig.out
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range.go test: a number of fixes. 2013-02-11 18:20:52 -05:00
recover.go test: disable failing tests under ssa/interp. 2013-09-18 14:44:57 -04:00
recover1.go
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recover2.go
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recover3.go tests: remove two misuses of nil pointers 2013-08-15 11:51:04 -04:00
rename.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
rename1.go
…
reorder.go test: a number of fixes. 2013-02-11 18:20:52 -05:00
reorder2.go cmd/gc: shorten temporary lifetimes when possible 2014-04-01 13:31:38 -04:00
return.go test: add cases to return.go that gccgo got wrong 2013-08-07 11:31:01 -07:00
rotate.go test: add rotate.go and fixedbugs/bug313 2013-01-11 22:42:55 +01:00
rotate0.go test: add rotate.go and fixedbugs/bug313 2013-01-11 22:42:55 +01:00
rotate1.go test: add rotate.go and fixedbugs/bug313 2013-01-11 22:42:55 +01:00
rotate2.go test: add rotate.go and fixedbugs/bug313 2013-01-11 22:42:55 +01:00
rotate3.go test: add rotate.go and fixedbugs/bug313 2013-01-11 22:42:55 +01:00
run test/run: add /usr/pkg/bin to PATH. 2014-03-03 02:16:15 -05:00
run.go test/run: limit parallelism to 1 for cross-exec builds 2014-05-28 01:01:08 -04:00
rune.go
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runtime.go
…
shift1.go test/shift1.go: recognize gccgo errors 2013-06-26 08:23:52 -07:00
shift2.go test: add shift expression incorrectly rejected by gccgo. 2013-06-25 08:06:34 +02:00
sieve.go
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sigchld.go test: skip SIGCHLD test on Plan 9 2014-01-29 09:28:23 +01:00
sigchld.out
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simassign.go
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sinit.go cmd/gc: do not generate code for var _ = ... unless necessary 2012-12-30 12:01:53 -05:00
sizeof.go test: correct sizeof.go. 2013-06-02 19:10:11 +02:00
slice3.go cmd/gc: support x[i:j:k] 2013-07-01 20:32:36 -04:00
slice3err.go test: match gccgo error messages 2013-12-12 17:18:12 -08:00
solitaire.go
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stack.go
…
string_lit.go test: add []rune case to string_lit.go 2013-12-12 17:17:02 -08:00
stringrange.go all: make Unicode surrogate halves illegal as UTF-8 2012-08-08 14:01:23 -07:00
struct0.go
…
switch.go cmd/gc: disallow fallthrough in final case of switch 2013-03-15 00:35:09 -04:00
switch3.go cmd/gc: accept switches on comparable arrays. 2012-08-03 21:47:26 +02:00
switch4.go cmd/gc: disallow fallthrough in final case of switch 2013-03-15 00:35:09 -04:00
testlib test/run: process build tags like go/build 2013-08-13 12:25:41 -04:00
tinyfin.go runtime: combine small NoScan allocations 2014-01-24 22:35:11 +04:00
torture.go cmd/8g: introduce temporaries in byte multiplication. 2012-12-21 23:46:16 +01:00
turing.go
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typecheck.go cmd/gc: silence assignment errors to undefined symbols 2014-01-03 21:03:20 +01:00
typeswitch.go
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typeswitch1.go
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typeswitch2.go
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typeswitch3.go test: match gccgo error messages 2012-09-28 08:30:30 -07:00
undef.go
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utf.go
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varerr.go
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varinit.go
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zerodivide.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00