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
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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
callback_c_gc.c
callback_c_gccgo.c
callback_c.c
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
cgo_test.go	misc/cgo/test: test C.enum_*	2020-10-27 18:13:59 +00:00
cgo_thread_lock.go
cgo_unix_test.go
cthread_unix.c
cthread_windows.c
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
issue4273b.c
issue4339.c
issue4339.h
issue5548_c.c
issue5740a.c
issue5740b.c
issue6833_c.c
issue6907export_c.c
issue6997_linux.c
issue6997_linux.go
issue7234_test.go
issue8148.go
issue8331.h
issue8517_windows.c
issue8517_windows.go
issue8517.go
issue8694.go
issue8811.c
issue18146.go	all: add GOOS=ios	2020-09-23 18:12:59 +00:00
issue20910.c
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
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
sigaltstack.go	runtime: use sigaltstack on macOS/ARM64	2020-10-06 21:25:42 +00:00
sigprocmask.c
sigprocmask.go
test_unix.go
test_windows.go
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