golang.go

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Files

Keith Randall 93e3696b5d cmd/compile: avoid past-the-end pointer when zeroing

When we optimize append(s, make([]T, n)...), we have to be careful
not to pass &s[0] + len(s)*sizeof(T) as the argument to memclr, as that
pointer might be past-the-end. This can only happen if n is zero, so
just special-case n==0 in the generated code.

Fixes #67255

Change-Id: Ic680711bb8c38440eba5e759363ef65f5945658b
Reviewed-on: https://go-review.googlesource.com/c/go/+/584116
Reviewed-by: Austin Clements <austin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>

2024-05-08 17:09:06 +00:00

abi

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

alias3.dir

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arenas

reflect: fix ArenaNew to match documentation

2023-06-16 17:08:43 +00:00

asmhdr.dir

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chan

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closure3.dir

cmd/compile/internal/noder: remove inlined closure naming hack

2023-08-17 19:36:29 +00:00

closure5.dir

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codegen

cmd/compile/internal/ssa: on PPC64, try combining CLRLSLDI and SRDconst into RLWINM

2024-05-03 21:12:29 +00:00

ddd2.dir

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dwarf

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fixedbugs

cmd/compile: avoid past-the-end pointer when zeroing

2024-05-08 17:09:06 +00:00

import2.dir

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import4.dir

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

interface

go/types, types2: more systematic use of Checker.use und useLHS

2023-03-28 14:28:33 +00:00

intrinsic.dir

runtime: replace all uses of CtzXX with TrailingZerosXX

2022-10-18 18:06:27 +00:00

ken

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linkname.dir

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method4.dir

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retjmp.dir

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runtime

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stress

test/stress: fix typo in comment

2024-03-25 19:21:35 +00:00

syntax

go/parser: adjustments to error messages

2022-09-01 22:37:04 +00:00

typeparam

cmd/compile: export/import materialized aliases

2024-04-05 16:29:58 +00:00

uintptrescapes.dir

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64bit.go

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235.go

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alg.go

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alias1.go

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alias2.go

cmd/compile: use "cannot use %s as %s value in %s: %s" error message

2022-09-28 22:28:39 +00:00

alias3.go

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alias.go

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align.go

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append1.go

cmd/compile: use "cannot use %s as %s value in %s: %s" error message

2022-09-28 22:28:39 +00:00

append.go

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args.go

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armimm.go

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asmhdr.go

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assign1.go

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assign.go

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atomicload.go

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bigalg.go

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bigmap.go

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blank1.go

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blank.go

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bom.go

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bombad.go

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bounds.go

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cannotassign.go

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chancap.go

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chanlinear.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

char_lit1.go

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char_lit.go

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checkbce.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

clear.go

cmd/compile: add clear(x) builtin

2023-01-31 19:43:07 +00:00

clearfat.go

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closedchan.go

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closure1.go

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closure2.go

cmd/compile: experimental loop iterator capture semantics change

2023-03-06 18:34:24 +00:00

closure3.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

closure4.go

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closure5.go

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closure6.go

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closure7.go

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closure.go

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cmp6.go

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cmp.go

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cmplx.go

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cmplxdivide1.go

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cmplxdivide.c

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cmplxdivide.go

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complit1.go

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complit.go

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compos.go

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const1.go

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const2.go

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const3.go

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const4.go

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const5.go

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const6.go

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const7.go

all: add wasip1 support

2023-04-11 20:56:32 +00:00

const8.go

test: add more tests for const decls with ommitted RHS expressions

2022-06-28 18:11:31 +00:00

const.go

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convert1.go

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convert2.go

go/types, types2: implement slice-to-array conversions

2022-09-08 15:55:44 +00:00

convert3.go

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convert4.go

cmd/compile: implement slice-to-array conversions

2022-09-19 18:58:26 +00:00

convert.go

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convinline.go

cmd/compile: handle integer conversions in static init inliner

2022-11-17 13:46:05 +00:00

convlit1.go

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convlit.go

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convT2X.go

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copy1.go

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copy.go

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crlf.go

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ddd1.go

cmd/compile: use "cannot use %s as %s value in %s: %s" error message

2022-09-28 22:28:39 +00:00

ddd2.go

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ddd.go

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decl.go

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declbad.go

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defer.go

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defererrcheck.go

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deferfin.go

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defernil.go

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deferprint.go

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deferprint.out

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devirt.go

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directive2.go

cmd/compile: restrict //go:notinheap to runtime/internal/sys

2022-09-02 06:22:23 +00:00

directive.go

cmd/compile: restrict //go:notinheap to runtime/internal/sys

2022-09-02 06:22:23 +00:00

divide.go

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divmod.go

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embedfunc.go

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embedvers.go

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empty.go

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env.go

test,internal/testdir: don't set GOOS/GOARCH

2023-05-12 12:34:59 +00:00

eof1.go

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eof.go

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escape2.go

all: remove newline characters after return statements

2023-12-14 17:22:18 +00:00

escape2n.go

all: remove newline characters after return statements

2023-12-14 17:22:18 +00:00

escape3.go

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escape4.go

cmd/compile/internal/inl: inline based on scoring when GOEXPERIMENT=newinliner

2023-09-14 19:43:26 +00:00

escape5.go

cmd/compile/internal/noder: stop preserving original const strings

2023-09-08 18:50:24 +00:00

escape_array.go

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escape_calls.go

cmd/compile: fix escape analysis of string min/max

2023-12-05 22:06:07 +00:00

escape_closure.go

cmd/compile/internal/escape: optimize indirect closure calls

2023-08-17 16:36:09 +00:00

escape_field.go

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escape_goto.go

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escape_hash_maphash.go

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escape_iface.go

test: remove *_unified.go variants

2023-05-23 17:16:35 +00:00

escape_indir.go

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escape_level.go

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escape_map.go

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escape_mutations.go

cmd/compile: restore zero-copy string->[]byte optimization

2023-08-18 11:58:37 +00:00

escape_param.go

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escape_reflect.go

cmd/compile/internal/noder: stop preserving original const strings

2023-09-08 18:50:24 +00:00

escape_runtime_atomic.go

runtime: migrate internal/atomic to internal/runtime

2024-03-25 19:53:03 +00:00

escape_selfassign.go

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escape_slice.go

cmd/compile/internal/noder: stop preserving original const strings

2023-09-08 18:50:24 +00:00

escape_struct_param1.go

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escape_struct_param2.go

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escape_struct_return.go

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escape_sync_atomic.go

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escape_unsafe.go

test: fix typo in escape_unsafe.go

2022-09-07 17:25:59 +00:00

escape.go

cmd/compile: experimental loop iterator capture semantics change

2023-03-06 18:34:24 +00:00

fibo.go

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finprofiled.go

test: ignore MemProfileRecords with no live objects in finprofiled.go

2023-11-16 05:48:00 +00:00

float_lit2.go

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float_lit3.go

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float_lit.go

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floatcmp.go

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for.go

test: add test cases for index value with range array clear

2023-07-10 16:36:41 +00:00

func1.go

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func2.go

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func3.go

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func4.go

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func5.go

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func6.go

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func7.go

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func8.go

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func.go

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funcdup2.go

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funcdup.go

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fuse.go

cmd/compile: improve integer comparisons with numeric bounds

2024-01-23 00:02:36 +00:00

gc1.go

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gc2.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

gc.go

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gcgort.go

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gcstring.go

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goprint.go

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goprint.out

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goto.go

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heapsampling.go

test/heapsampling.go: slow down allocation rate and reduce iterations

2022-05-27 21:36:06 +00:00

helloworld.go

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helloworld.out

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if.go

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import1.go

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

import2.go

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import4.go

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import5.go

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import6.go

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import.go

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index0.go

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index1.go

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index2.go

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index.go

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indirect1.go

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indirect.go

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init1.go

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init.go

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initcomma.go

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initexp.go

cmd/compile: use "init... cycle" instead of "init... loop" in error messages

2022-09-23 20:27:09 +00:00

initialize.go

cmd/compile: handle simple inlined calls in staticinit

2022-11-16 04:04:52 +00:00

initializerr.go

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initloop.go

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inline_big.go

cmd/compile: restore zero-copy string->[]byte optimization

2023-08-18 11:58:37 +00:00

inline_caller.go

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inline_callers.go

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inline_endian.go

cmd/compile: make encoding/binary appends cheaper to inline

2022-09-15 21:05:02 +00:00

inline_literal.go

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inline_math_bits_rotate.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

inline_sync.go

sync: use atomic.Uint32 in Once

2023-10-06 21:01:50 +00:00

inline_variadic.go

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inline.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

int_lit.go

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intcvt.go

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intrinsic_atomic.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

intrinsic.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

iota.go

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label1.go

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label.go

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linkmain_run.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkmain.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkname3.go

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linkname.go

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linkobj.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkx_run.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkx.go

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literal2.go

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literal.go

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live1.go

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live2.go

cmd/compile/internal/reflectdata: share hmap and hiter types

2023-08-21 23:29:33 +00:00

live_regabi.go

math/rand, math/rand/v2: use ChaCha8 for global rand

2023-12-05 20:34:30 +00:00

live_uintptrkeepalive.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

live.go

math/rand, math/rand/v2: use ChaCha8 for global rand

2023-12-05 20:34:30 +00:00

loopbce.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

mainsig.go

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makechan.go

all: fix some comments

2024-04-04 14:29:45 +00:00

makemap.go

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makenew.go

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makeslice.go

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mallocfin.go

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map1.go

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map.go

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mapclear.go

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maplinear.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

maymorestack.go

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mergemul.go

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method1.go

cmd/compile: use "method T.m already declared" for method redeclaration errors

2022-09-27 21:59:19 +00:00

method2.go

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method3.go

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method4.go

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method5.go

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method6.go

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method7.go

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method.go

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named1.go

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named.go

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newinline.go

cmd/compile/internal/inline: refactor AnalyzeFunc

2023-11-16 20:15:25 +00:00

nil.go

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nilcheck.go

[dev.unified] test: tweak nilcheck test

2022-06-30 18:41:59 +00:00

nilptr2.go

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nilptr3.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr4.go

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nilptr5_aix.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr5_wasm.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr5.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr_aix.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

noinit.go

cmd/compile: reenable inline static init

2023-04-14 17:57:36 +00:00

nosplit.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nowritebarrier.go

cmd/compile: redo IsRuntimePkg/IsReflectPkg predicate

2023-08-22 19:18:21 +00:00

nul1.go

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opt_branchlikely.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

parentype.go

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peano.go

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phiopt.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

print.go

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print.out

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printbig.go

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printbig.out

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prove_constant_folding.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

prove_invert_loop_with_unused_iterators.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

prove.go

cmd/compile: improve integer comparisons with numeric bounds

2024-01-23 00:02:36 +00:00

range2.go

all: rename GOEXPERIMENT=range to rangefunc

2023-11-08 15:32:14 +00:00

range3.go

cmd/compile: fix typecheck range over rune literal

2023-12-01 17:20:08 +00:00

range4.go

cmd/compile: handle defined iter func type correctly

2024-01-08 16:00:53 +00:00

range.go

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rangegen.go

test: skip rangegen.go on 32-bit platforms

2023-12-18 23:35:19 +00:00

README.md

internal/testdir: move to cmd/internal/testdir

2023-05-12 17:18:08 +00:00

recover1.go

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recover2.go

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recover3.go

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recover4.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

recover5.go

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recover.go

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reflectmethod1.go

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reflectmethod2.go

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reflectmethod3.go

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reflectmethod4.go

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reflectmethod5.go

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reflectmethod6.go

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reflectmethod7.go

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reflectmethod8.go

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rename1.go

cmd/compile/internal/types2: only mark variables as used if they are

2023-04-19 14:07:00 +00:00

rename.go

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reorder2.go

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reorder.go

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retjmp.go

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return.go

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rotate0.go

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rotate1.go

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rotate2.go

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rotate3.go

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rotate.go

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rune.go

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runtime.go

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shift1.go

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shift2.go

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shift3.go

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sieve.go

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sigchld.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

sigchld.out

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simassign.go

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sizeof.go

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slice3.go

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slice3err.go

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slicecap.go

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sliceopt.go

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solitaire.go

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stack.go

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stackobj2.go

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stackobj3.go

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stackobj.go

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strcopy.go

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strength.go

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string_lit.go

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stringrange.go

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struct0.go

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switch2.go

go/parser: adjustments to error messages

2022-09-01 22:37:04 +00:00

switch3.go

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switch4.go

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switch5.go

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switch6.go

cmd/compile: use "missing method m" instead of "missing m method"

2022-09-24 17:04:15 +00:00

switch7.go

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switch.go

[dev.unified] test: add switch test case for tricky nil handling

2022-07-19 23:30:49 +00:00

tighten.go

cmd/compile: enhance tighten pass for memory values

2023-05-16 01:01:38 +00:00

tinyfin.go

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torture.go

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turing.go

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typecheck.go

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typecheckloop.go

cmd/compile: use "init... cycle" instead of "init... loop" in error messages

2022-09-23 20:27:09 +00:00

typeswitch1.go

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typeswitch2.go

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typeswitch2b.go

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

typeswitch3.go

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typeswitch.go

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uintptrescapes2.go

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uintptrescapes3.go

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uintptrescapes.go

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uintptrkeepalive.go

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undef.go

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unsafe_slice_data.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafe_string_data.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafe_string.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafebuiltins.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

used.go

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utf.go

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varerr.go

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varinit.go

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winbatch.go

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writebarrier.go

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zerodivide.go

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zerosize.go

cmd/link: put zero-sized data symbols at same address as runtime.zerobase

2023-04-28 18:35:43 +00:00

README.md

The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.

To run just these tests, execute:

../bin/go test cmd/internal/testdir

To run just tests from specified files in this directory, execute:

../bin/go test cmd/internal/testdir -run='Test/(file1.go|file2.go|...)'

Standard library tests should be written as regular Go tests in the appropriate package.

The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:

it is most naturally expressed using the test runner; or
it is also applicable to gccgo and other Go tool chains.