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| author | Ayke van Laethem <[email protected]> | 2024-11-06 14:57:56 +0100 |
|---|---|---|
| committer | Ayke <[email protected]> | 2024-11-20 07:53:59 +0100 |
| commit | 6593cf22fad6fab2a201ed00c2cc20c76e29161a (patch) | |
| tree | 929fba3e751e9665844c2e7c8b2783a872ccb1dd /testdata | |
| parent | 548fba82e691b125bdac71f6c393f67fcf4d769f (diff) | |
| download | tinygo-6593cf22fad6fab2a201ed00c2cc20c76e29161a.tar.gz tinygo-6593cf22fad6fab2a201ed00c2cc20c76e29161a.zip | |
cgo: support errno value as second return parameter
Making this work on all targets was interesting but there's now a test
in place to make sure this works on all targets that have the CGo test
enabled (which is almost all targets).
Diffstat (limited to 'testdata')
| -rw-r--r-- | testdata/cgo/main.c | 5 | ||||
| -rw-r--r-- | testdata/cgo/main.go | 12 | ||||
| -rw-r--r-- | testdata/cgo/main.h | 3 | ||||
| -rw-r--r-- | testdata/cgo/out.txt | 2 |
4 files changed, 21 insertions, 1 deletions
diff --git a/testdata/cgo/main.c b/testdata/cgo/main.c index 4a5bd6b9c..94b338dda 100644 --- a/testdata/cgo/main.c +++ b/testdata/cgo/main.c @@ -77,3 +77,8 @@ double doSqrt(double x) { void printf_single_int(char *format, int arg) { printf(format, arg); } + +int set_errno(int err) { + errno = err; + return -1; +} diff --git a/testdata/cgo/main.go b/testdata/cgo/main.go index 00e0ba01d..38d11386a 100644 --- a/testdata/cgo/main.go +++ b/testdata/cgo/main.go @@ -18,7 +18,10 @@ import "C" // static int headerfunc_static(int a) { return a - 1; } import "C" -import "unsafe" +import ( + "syscall" + "unsafe" +) func main() { println("fortytwo:", C.fortytwo()) @@ -168,6 +171,13 @@ func main() { println("len(C.GoBytes(C.CBytes(nil),0)):", len(C.GoBytes(C.CBytes(nil), 0))) println(`rountrip CBytes:`, C.GoString((*C.char)(C.CBytes([]byte("hello\000"))))) + // Check that errno is returned from the second return value, and that it + // matches the errno value that was just set. + _, errno := C.set_errno(C.EINVAL) + println("EINVAL:", errno == syscall.EINVAL) + _, errno = C.set_errno(C.EAGAIN) + println("EAGAIN:", errno == syscall.EAGAIN) + // libc: test whether C functions work at all. buf1 := []byte("foobar\x00") buf2 := make([]byte, len(buf1)) diff --git a/testdata/cgo/main.h b/testdata/cgo/main.h index e7c64ffc3..3942497f2 100644 --- a/testdata/cgo/main.h +++ b/testdata/cgo/main.h @@ -1,5 +1,6 @@ #include <stdbool.h> #include <stdint.h> +#include <errno.h> typedef short myint; typedef short unusedTypedef; @@ -154,3 +155,5 @@ void arraydecay(int buf1[5], int buf2[3][8], arraydecay_buf3 buf3); double doSqrt(double); void printf_single_int(char *format, int arg); + +int set_errno(int err); diff --git a/testdata/cgo/out.txt b/testdata/cgo/out.txt index 3088d4cb4..1d63f5e82 100644 --- a/testdata/cgo/out.txt +++ b/testdata/cgo/out.txt @@ -75,6 +75,8 @@ len(C.GoStringN(nil, 0)): 0 len(C.GoBytes(nil, 0)): 0 len(C.GoBytes(C.CBytes(nil),0)): 0 rountrip CBytes: hello +EINVAL: true +EAGAIN: true copied string: foobar CGo sqrt(3): +1.732051e+000 C sqrt(3): +1.732051e+000 |