Austin Clements f423d616b1 cmd/cgo: fix initialization of empty argument types ... CL 258938 changed the way C to Go calls work such that they now construct a C struct on the C side for the arguments and space for the results. Any pointers in the result space must be zeroed, so we just zero the whole struct. However, C makes it surprisingly hard to robustly zero any struct type. We had used a "{0}" initializer, which works in the vast majority of cases, but fails if the type is empty or effectively empty. This CL fixes this by changing how the cgo tool zero-initializes the argument struct to be more robust. Fixes #42495. Change-Id: Id1749b9d751e59eb7a02a9d44fec0698a2bf63cd Reviewed-on: https://go-review.googlesource.com/c/go/+/269337 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>		2020-11-13 15:15:15 +00:00
..
testdata	cmd/dist,cmd/go,runtime: add support for cgo on linux/riscv64	2020-11-03 12:59:51 +00:00
backdoor.go
buildid_linux.go	misc/cgo/test: avoid endless loop when we can't parse notes	2018-01-11 19:55:49 +00:00
callback_c_gc.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
callback_c_gccgo.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
callback_c.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
callback.go	runtime,cmd/cgo: simplify C -> Go call path	2020-10-26 14:50:32 +00:00
cgo_linux_test.go	syscall: support POSIX semantics for Linux syscalls	2020-10-23 20:53:14 +00:00
cgo_stubs_android_test.go	misc/cgo/test: consolidate tests into fewer cgo source files	2019-05-22 12:52:33 +00:00
cgo_test.go	misc/cgo/test: test C.enum_*	2020-10-27 18:13:59 +00:00
cgo_thread_lock.go	misc/cgo/test: add test that gccgo fails	2016-10-13 00:03:57 +00:00
cgo_unix_test.go	runtime/cgo: retry pthread_create on EAGAIN	2016-12-05 18:46:18 +00:00
cthread_unix.c	cmd/dist, misc/cgo: enable tests for aix/ppc64	2019-03-20 14:38:44 +00:00
cthread_windows.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue1435.go	syscall: improve TestSetuidEtc() /proc/ parsing against races	2020-11-11 20:49:53 +00:00
issue4029.c	cmd/link: support cgo internal/linking on darwin/arm64	2020-10-20 02:25:52 +00:00
issue4029.go	cmd/link: support cgo internal/linking on darwin/arm64	2020-10-20 02:25:52 +00:00
issue4029w.go	cmd/link: support cgo internal/linking on darwin/arm64	2020-10-20 02:25:52 +00:00
issue4273.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue4273b.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue4339.c
issue4339.h
issue5548_c.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue5740a.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue5740b.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue6833_c.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue6907export_c.c	cmd/cgo: permit passing string values directly between Go and C	2017-11-15 03:36:54 +00:00
issue6997_linux.c	misc/cgo/test,cmd/dist: enable (most) Cgo tests on Android	2016-06-01 22:06:51 +00:00
issue6997_linux.go	misc/cgo/test,cmd/dist: enable (most) Cgo tests on Android	2016-06-01 22:06:51 +00:00
issue7234_test.go	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue8148.go	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue8331.h	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue8517_windows.c
issue8517_windows.go
issue8517.go
issue8694.go	misc/cgo/test,cmd/dist: enable (most) Cgo tests on Android	2016-06-01 22:06:51 +00:00
issue8811.c	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
issue18146.go	all: add GOOS=ios	2020-09-23 18:12:59 +00:00
issue20910.c	cmd/cgo: unify cgo output for gc and gccgo	2017-08-16 21:57:56 +00:00
issue21897.go	misc/cgo/test: re-enable darwin cgo tests in race mode	2020-01-10 10:04:49 +00:00
issue21897b.go	misc/cgo/test: re-enable darwin cgo tests in race mode	2020-01-10 10:04:49 +00:00
issue31891.c	cmd/cgo: build unique C type cache keys from parent names	2019-10-05 00:16:04 +00:00
issue42495.go	cmd/cgo: fix initialization of empty argument types	2020-11-13 15:15:15 +00:00
overlaydir_test.go	misc: remove use of relative directories in overlayDir functions	2019-11-25 16:26:15 +00:00
pkg_test.go	all: add GOOS=ios	2020-09-23 18:12:59 +00:00
setgid_linux.go	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
sigaltstack.go	runtime: use sigaltstack on macOS/ARM64	2020-10-06 21:25:42 +00:00
sigprocmask.c	misc/cgo/test: add retry loop around pthread_create in TestSigprocmask	2018-06-27 04:33:10 +00:00
sigprocmask.go	misc/cgo/test: log error value in testSigprocmask	2018-04-25 20:26:39 +00:00
test_unix.go	misc/cgo/test: consolidate tests into fewer cgo source files	2019-05-22 12:52:33 +00:00
test_windows.go	misc/cgo/test: consolidate tests into fewer cgo source files	2019-05-22 12:52:33 +00:00
test.go	misc/cgo/test: test C.enum_*	2020-10-27 18:13:59 +00:00
testx.go	all: add GOOS=ios	2020-09-23 18:12:59 +00:00