go/test
khr@golang.org 8fbd4d7b0e [release-branch.go1.21] cmd/compile: don't combine loads in generated equality functions
... if the architecture can't do unaligned loads.
We already handle this in a few places, but this particular place
was added in CL 399542 and missed this additional restriction.

Fixes #67164

(Reroll of CL 583303)

Change-Id: Id067cc2e39d7d199672f2017f7f53991fb23f8d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/583799
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2024-05-10 15:30:28 +00:00
..
abi cmd/compile: restore tail call for method wrappers 2021-09-17 22:59:44 +00:00
alias3.dir [dev.typealias] cmd/compile: export/import test cases for type aliases 2017-01-20 05:55:53 +00:00
arenas reflect: fix ArenaNew to match documentation 2023-06-16 17:08:43 +00:00
asmhdr.dir cmd/compile: use exact constant in go_asm.h 2022-01-10 21:27:19 +00:00
chan [dev.typeparams] cmd/compile/internal/types2: implement close(ch) where ch is of type parameter type 2021-07-14 23:33:46 +00:00
closure3.dir cmd/compile: incorporate inlined function names into closure naming 2023-05-22 22:47:15 +00:00
closure5.dir test: use dot-relative imports where appropriate 2022-03-24 02:14:15 +00:00
codegen [release-branch.go1.21] cmd/compile: fix memcombine pass for big endian, > 1 byte elements 2023-12-06 21:29:58 +00:00
ddd2.dir
dwarf
fixedbugs [release-branch.go1.21] cmd/compile: don't combine loads in generated equality functions 2024-05-10 15:30:28 +00:00
import2.dir all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
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 test/ken/slicearray.go: correct type width in comment 2021-12-05 12:50:44 +00:00
linkname.dir test: compile source files as if from "test" module 2022-03-24 17:50:47 +00:00
method4.dir cmd/gc: do not omit wrapper for expression (interface{...}).F 2014-01-07 13:26:48 +01:00
retjmp.dir cmd/internal/obj: fix tail call in non-zero frame leaf function on MIPS and S390X 2021-12-13 22:42:08 +00:00
runtime test: remove -newescape from regress tests 2019-08-28 19:27:20 +00:00
stress all: update references to symbols moved from io/ioutil to io 2021-04-05 17:51:15 +00:00
syntax go/parser: adjustments to error messages 2022-09-01 22:37:04 +00:00
typeparam go/types, types2: don't infer type argument for unused parameter in interfaces 2023-05-25 21:37:01 +00:00
uintptrescapes.dir cmd/compile, syscall: add //go:uintptrescapes comment, and use it 2016-07-06 20:48:41 +00:00
64bit.go
235.go
README.md internal/testdir: move to cmd/internal/testdir 2023-05-12 17:18:08 +00:00
alg.go test: add test that required algs get generated 2016-04-24 21:36:52 +00:00
alias.go
alias1.go
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
align.go test: check that unaligned load-add opcodes work. 2018-04-09 18:57:37 +00:00
append.go
append1.go cmd/compile: use "cannot use %s as %s value in %s: %s" error message 2022-09-28 22:28:39 +00:00
args.go test: run some more tests by default 2012-11-08 09:04:27 -08:00
armimm.go
asmhdr.go cmd/compile: emit sensible go_asm.h consts for big ints 2021-10-30 18:30:05 +00:00
assign.go [dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams' 2020-12-14 12:13:36 -08:00
assign1.go
atomicload.go
bigalg.go
bigmap.go
blank.go test: revert changes made for Go SSA interpreter test. 2013-10-08 14:36:20 -04:00
blank1.go [dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams' 2020-12-14 12:13:36 -08:00
bom.go
bombad.go
bounds.go cmd/compile: defer lowering OANDNOT until SSA 2020-10-27 03:11:45 +00:00
cannotassign.go [dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag 2020-12-01 21:49:31 +00:00
chancap.go
chanlinear.go test, test/fixedbugs, crypto/x509, go/internal/gccgoimporter: fix typos 2020-03-29 17:12:56 +00:00
char_lit.go
char_lit1.go
checkbce.go Revert "cmd/compile: sparse conditional constant propagation" 2023-05-24 14:39:34 +00:00
clear.go cmd/compile: add clear(x) builtin 2023-01-31 19:43:07 +00:00
clearfat.go
closedchan.go
closure.go test: enforce 1 proc in the test 2012-07-01 21:59:50 +04:00
closure1.go cmd/gc: capture variables by value 2015-01-29 13:07:30 +00:00
closure2.go cmd/compile: experimental loop iterator capture semantics change 2023-03-06 18:34:24 +00:00
closure3.go
closure4.go
closure5.go
closure6.go
closure7.go
cmp.go Fix several out of date references to 4g/5g/6g/8g/9g. 2015-06-26 03:38:21 +00:00
cmp6.go
cmplx.go
cmplxdivide.c
cmplxdivide.go
cmplxdivide1.go
complit.go
complit1.go test: fix error check messages for 2 types2 tests 2021-06-02 05:14:45 +00:00
compos.go
const.go
const1.go
const2.go
const3.go
const4.go
const5.go
const6.go
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
convT2X.go
convert.go test: [a-c]: add introductory comments to tests 2012-02-19 13:19:43 +11:00
convert1.go
convert2.go go/types, types2: implement slice-to-array conversions 2022-09-08 15:55:44 +00:00
convert3.go
convert4.go cmd/compile: implement slice-to-array conversions 2022-09-19 18:58:26 +00:00
convinline.go cmd/compile: handle integer conversions in static init inliner 2022-11-17 13:46:05 +00:00
convlit.go cmd/compile/internal/types2: refactor untyped conversions 2021-03-23 05:11:09 +00:00
convlit1.go
copy.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
copy1.go
crlf.go
ddd.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
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
decl.go
declbad.go cmd/compile: rewrite a, b = f() to use temporaries when type not identical 2021-06-14 07:12:37 +00:00
defer.go
defererrcheck.go test: re-enable open-coded defer test on riscv64 2020-02-26 16:54:17 +00:00
deferfin.go
defernil.go
deferprint.go
deferprint.out
devirt.go [dev.typeparams] cmd/compile: simplify interface conversions 2021-08-09 16:10:20 +00:00
directive.go cmd/compile: restrict //go:notinheap to runtime/internal/sys 2022-09-02 06:22:23 +00:00
directive2.go cmd/compile: restrict //go:notinheap to runtime/internal/sys 2022-09-02 06:22:23 +00:00
divide.go
divmod.go
embedfunc.go
embedvers.go
empty.go
env.go test,internal/testdir: don't set GOOS/GOARCH 2023-05-12 12:34:59 +00:00
eof.go
eof1.go
escape.go cmd/compile: experimental loop iterator capture semantics change 2023-03-06 18:34:24 +00:00
escape2.go [dev.typeparams] cmd/compile: move call logic from order.go to escape 2021-06-23 16:48:12 +00:00
escape2n.go [dev.typeparams] cmd/compile: move call logic from order.go to escape 2021-06-23 16:48:12 +00:00
escape3.go
escape4.go test: enable inlining tests for functions with local type 2023-01-31 20:36:55 +00:00
escape5.go [dev.typeparams] test: rename blank functions 2021-07-28 21:41:07 +00:00
escape_array.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_calls.go [release-branch.go1.21] cmd/compile: fix escape analysis of string min/max 2023-12-06 21:31:12 +00:00
escape_closure.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_field.go
escape_goto.go [dev.typeparams] test: rename blank functions 2021-07-28 21:41:07 +00:00
escape_hash_maphash.go hash/maphash: mark call into runtime hash function as not escaping 2019-11-16 20:31:45 +00:00
escape_iface.go test: remove *_unified.go variants 2023-05-23 17:16:35 +00:00
escape_indir.go
escape_level.go
escape_map.go
escape_param.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_reflect.go test: add escape test for reflect.Value operations 2023-05-12 23:13:19 +00:00
escape_runtime_atomic.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_selfassign.go
escape_slice.go cmd/compile: implement slice-to-array conversions 2022-09-19 18:58:26 +00:00
escape_struct_param1.go
escape_struct_param2.go
escape_struct_return.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_sync_atomic.go
escape_unsafe.go test: fix typo in escape_unsafe.go 2022-09-07 17:25:59 +00:00
fibo.go
finprofiled.go all: fix typos 2019-09-08 17:28:20 +00:00
float_lit.go
float_lit2.go
float_lit3.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
floatcmp.go test: ensure all failing tests exit nonzero. 2013-02-12 13:17:49 -05:00
for.go test: add test cases for index value with range array clear 2023-07-10 16:36:41 +00:00
func.go test: explanatory comments [c-g]* 2012-02-19 14:28:53 +11:00
func1.go [dev.typeparams] test: enable some more errorcheck tests 2020-12-04 21:22:23 +00:00
func2.go test: explanatory comments [c-g]* 2012-02-19 14:28:53 +11:00
func3.go
func4.go
func5.go
func6.go
func7.go
func8.go
funcdup.go [dev.typeparams] test: enable some more errorcheck tests 2020-12-04 21:22:23 +00:00
funcdup2.go [dev.typeparams] test: enable some more errorcheck tests 2020-12-04 21:22:23 +00:00
fuse.go test: do not run fuse test in noopt mode 2021-04-28 15:55:10 +00:00
gc.go test: explanatory comments [c-g]* 2012-02-19 14:28:53 +11:00
gc1.go
gc2.go
gcgort.go test: fast GC+concurrency+types verification 2018-05-08 21:15:48 +00:00
gcstring.go
goprint.go
goprint.out
goto.go
heapsampling.go test/heapsampling.go: slow down allocation rate and reduce iterations 2022-05-27 21:36:06 +00:00
helloworld.go test: remove rundircmpout and cmpout actions 2018-05-31 17:36:45 +00:00
helloworld.out test: split golden.out into expected output per test 2012-01-18 16:12:24 -08:00
if.go
import.go
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
import4.go
import5.go cmd/compile: be slightly more tolerant in case of certain syntax errors 2017-03-24 20:07:15 +00:00
import6.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
index.go all: fix typos 2019-09-08 17:28:20 +00:00
index0.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
index1.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
index2.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
indirect.go
indirect1.go
init.go [dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams' 2020-12-14 12:13:36 -08:00
init1.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
initcomma.go test/initcomma.go: restore what it's supposed to be testing 2012-02-20 07:44:24 +11:00
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 test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
initloop.go [dev.typeparams] cmd/compile/internal/types2: adjusted qualified identifier error message for compiler 2020-12-09 23:56:19 +00:00
inline.go test: remove *_unified.go variants 2023-05-23 17:16:35 +00:00
inline_big.go cmd/compile: flag 'large' functions when -m=2+ in effect 2023-01-24 13:28:54 +00:00
inline_caller.go runtime: make FuncForPC return the innermost inlined frame 2019-01-08 21:54:04 +00:00
inline_callers.go
inline_endian.go cmd/compile: make encoding/binary appends cheaper to inline 2022-09-15 21:05:02 +00:00
inline_literal.go
inline_math_bits_rotate.go cmd/compile: make math/bits.RotateLeft* an intrinsic on amd64 2018-08-30 22:48:28 +00:00
inline_sync.go reflect: do not escape Value.Type 2023-05-12 21:11:51 +00:00
inline_variadic.go [dev.typeparams] cmd/compile: simplify inlining variadic calls 2021-05-26 23:50:45 +00:00
int_lit.go test: commentary for [h-m]*.go 2012-02-23 18:47:26 +11:00
intcvt.go
intrinsic.go
intrinsic_atomic.go misc, test: fix test error for loong64 2022-05-20 16:16:37 +00:00
iota.go
label.go
label1.go
linkmain.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
linkmain_run.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
linkname.go test: remove -newescape from regress tests 2019-08-28 19:27:20 +00:00
linkname3.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
linkobj.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
linkx.go
linkx_run.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
literal.go
literal2.go
live.go cmd/compile: sort liveness variable reports 2023-01-21 21:08:00 +00:00
live1.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
live2.go cmd/compile: extend ssa.go to handle 1-element array and 1-field struct 2019-09-03 19:33:04 +00:00
live_regabi.go test: test that we schedule OpArgIntReg early 2023-01-21 21:08:30 +00:00
live_uintptrkeepalive.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
loopbce.go Revert "cmd/compile: sparse conditional constant propagation" 2023-05-24 14:39:34 +00:00
mainsig.go [dev.regabi] cmd/compile: cleanup for concrete types - noder 2020-12-17 04:43:46 +00:00
makechan.go cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice 2021-04-23 00:41:01 +00:00
makemap.go cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice 2021-04-23 00:41:01 +00:00
makenew.go [dev.typeparams] test: enable some more errorcheck tests 2020-12-04 21:22:23 +00:00
makeslice.go
mallocfin.go test: commentary for [h-m]*.go 2012-02-23 18:47:26 +11:00
map.go test/mapnan.go: add regression test for non-empty interfaces. 2014-08-06 17:02:55 -04:00
map1.go [dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams' 2020-12-14 12:13:36 -08:00
mapclear.go
maplinear.go test: make maplinear more robust 2014-10-27 18:59:02 -04:00
maymorestack.go cmd/{asm,compile,internal/obj}: add "maymorestack" support 2021-11-05 00:52:06 +00:00
mergemul.go
method.go test: a number of fixes. 2013-02-11 18:20:52 -05:00
method1.go cmd/compile: use "method T.m already declared" for method redeclaration errors 2022-09-27 21:59:19 +00:00
method2.go go/types, types2: better error message when using *interface instead of interface 2022-01-10 22:48:40 +00:00
method3.go
method4.go
method5.go
method6.go
method7.go
named.go
named1.go
nil.go
nilcheck.go [dev.unified] test: tweak nilcheck test 2022-06-30 18:41:59 +00:00
nilptr.go
nilptr2.go
nilptr3.go cmd/compile: casts from slices to array pointers are known to be non-nil 2023-03-29 21:55:11 +00:00
nilptr4.go
nilptr5.go cmd/compile: handle partially overlapping assignments 2022-08-23 19:56:32 +00:00
nilptr5_aix.go
nilptr5_wasm.go
nilptr_aix.go
noinit.go cmd/compile: reenable inline static init 2023-04-14 17:57:36 +00:00
nosplit.go runtime, cmd: rationalize StackLimit and StackGuard 2023-04-21 19:28:56 +00:00
nowritebarrier.go
nul1.go
opt_branchlikely.go
parentype.go test/[n-r]*.go: add documentation 2012-02-24 10:30:39 +11:00
peano.go
phiopt.go cmd/compile/internal/ssa: strengthen phiopt pass 2021-03-29 05:50:11 +00:00
print.go
print.out
printbig.go
printbig.out
prove.go cmd/compile: teach prove about bitwise OR operation 2023-04-10 17:13:41 +00:00
prove_constant_folding.go cmd/compile: fold constants found by prove 2022-05-04 20:30:17 +00:00
range.go cmd/compile: improve single blank variable handling in walkrange 2017-09-12 05:50:54 +00:00
recover.go
recover1.go
recover2.go
recover3.go
recover4.go test/recover4.go: use mprotect to create a hole instead of munmap 2021-11-12 16:58:34 +00:00
recover5.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
reflectmethod5.go
reflectmethod6.go
reflectmethod7.go all: use reflect.{Pointer,PointerTo} 2021-10-26 14:24:17 +00:00
reflectmethod8.go [dev.typeparams] cmd/compile: fix missing condition in usemethod 2021-07-22 17:48:41 +00:00
rename.go
rename1.go cmd/compile/internal/types2: only mark variables as used if they are 2023-04-19 14:07:00 +00:00
reorder.go [dev.regabi] cmd/compile: cleanup OAS2FUNC ordering 2021-01-16 23:19:26 +00:00
reorder2.go
retjmp.go
return.go
rotate.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
rotate0.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
rotate1.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
rotate2.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
rotate3.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
rune.go
runtime.go [dev.typeparams] cmd/compile/internal/types2: adjusted qualified identifier error message for compiler 2020-12-09 23:56:19 +00:00
shift1.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
shift2.go
shift3.go cmd/compile: adjust types2 shift check to match go/types (cleanup) 2022-04-07 17:19:55 +00:00
sieve.go
sigchld.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
sigchld.out
simassign.go test/[n-z]*.go: add documentation 2012-02-24 11:48:19 +11:00
sizeof.go
slice3.go
slice3err.go
slicecap.go
sliceopt.go
solitaire.go test/[n-z]*.go: add documentation 2012-02-24 11:48:19 +11:00
stack.go
stackobj.go cmd/compile,runtime: remove ambiguously live logic 2018-10-03 19:54:16 +00:00
stackobj2.go test: stress test for stack objects 2018-10-03 19:54:29 +00:00
stackobj3.go cmd/compile,runtime: remove ambiguously live logic 2018-10-03 19:54:16 +00:00
strcopy.go test: add test to verify that string copies don't get optimized away 2018-06-12 19:10:34 +00:00
strength.go
string_lit.go test: add []rune case to string_lit.go 2013-12-12 17:17:02 -08:00
stringrange.go
struct0.go all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
switch.go [dev.unified] test: add switch test case for tricky nil handling 2022-07-19 23:30:49 +00:00
switch2.go go/parser: adjustments to error messages 2022-09-01 22:37:04 +00:00
switch3.go
switch4.go
switch5.go
switch6.go cmd/compile: use "missing method m" instead of "missing m method" 2022-09-24 17:04:15 +00:00
switch7.go
tighten.go cmd/compile: enhance tighten pass for memory values 2023-05-16 01:01:38 +00:00
tinyfin.go
torture.go
turing.go
typecheck.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
typecheckloop.go cmd/compile: use "init... cycle" instead of "init... loop" in error messages 2022-09-23 20:27:09 +00:00
typeswitch.go
typeswitch1.go
typeswitch2.go
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 cmd/compile/internal/types2: better error for type assertion/switch on type parameter value 2021-11-12 22:20:51 +00:00
uintptrescapes.go
uintptrescapes2.go [dev.typeparams] cmd/compile: skip escape analysis diagnostics for wrappers 2021-06-24 18:24:24 +00:00
uintptrescapes3.go
uintptrkeepalive.go cmd/compile: add //go:uintptrkeepalive 2022-04-21 18:06:38 +00:00
undef.go
unsafe_slice_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
unsafe_string_data.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 [dev.typeparams] all: merge dev.regabi (07569da) into dev.typeparams 2020-12-28 00:39:17 -08:00
utf.go
varerr.go [dev.typeparams] test: enable some more errorcheck tests 2020-12-04 21:22:23 +00:00
varinit.go test/[n-z]*.go: add documentation 2012-02-24 11:48:19 +11:00
winbatch.go all: update to use filepath.WalkDir instead of filepath.Walk 2020-12-02 16:33:57 +00:00
writebarrier.go cmd/compile: don't emit write barriers for offsets of global addresses 2021-08-23 19:46:36 +00:00
zerodivide.go all: use bytes.Cut, strings.Cut 2021-10-06 15:53:04 +00:00
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.