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| author | Ayke van Laethem <[email protected]> | 2021-11-11 16:11:08 +0100 |
|---|---|---|
| committer | Ron Evans <[email protected]> | 2021-11-24 21:09:29 +0100 |
| commit | c31aef06ba131051cba4a18f336eb7d820faa4e7 (patch) | |
| tree | 219fe13aa3b09f331195686d664b58d0b64a52b8 /testdata | |
| parent | 6bd18af5ef02eddb8507cdbe40ffbe8d594af910 (diff) | |
| download | tinygo-c31aef06ba131051cba4a18f336eb7d820faa4e7.tar.gz tinygo-c31aef06ba131051cba4a18f336eb7d820faa4e7.zip | |
cgo: add support for C.CString and related functions
Diffstat (limited to 'testdata')
| -rw-r--r-- | testdata/cgo/main.c | 2 | ||||
| -rw-r--r-- | testdata/cgo/main.go | 15 | ||||
| -rw-r--r-- | testdata/cgo/main.h | 2 | ||||
| -rw-r--r-- | testdata/cgo/out.txt | 7 |
4 files changed, 26 insertions, 0 deletions
diff --git a/testdata/cgo/main.c b/testdata/cgo/main.c index d40833246..31b60704f 100644 --- a/testdata/cgo/main.c +++ b/testdata/cgo/main.c @@ -24,6 +24,8 @@ int cflagsConstant = SOME_CONSTANT; int smallEnumWidth = sizeof(option2_t); +char globalChars[] = {2, 0, 4, 8}; + int fortytwo() { return 42; } diff --git a/testdata/cgo/main.go b/testdata/cgo/main.go index cc25152e4..e8438919f 100644 --- a/testdata/cgo/main.go +++ b/testdata/cgo/main.go @@ -135,6 +135,21 @@ func main() { // void arraydecay(int *buf1, int *buf2[8], int *buf3[7][2]); C.arraydecay((*C.int)(nil), (*[8]C.int)(nil), (*[7][2]C.int)(nil)) + // Test CGo builtins like C.CString. + cstr := C.CString("string passed to C") + println("cstr length:", C.strlen(cstr)) + gostr := C.GoString(cstr) + println("C.CString:", gostr) + charBuf := C.GoBytes(unsafe.Pointer(&C.globalChars[0]), 4) + println("C.charBuf:", charBuf[0], charBuf[1], charBuf[2], charBuf[3]) + binaryString := C.GoStringN(&C.globalChars[0], 4) + println("C.CStringN:", len(binaryString), binaryString[0], binaryString[1], binaryString[2], binaryString[3]) + + // Test whether those builtins also work with zero length data. + println("C.GoString(nil):", C.GoString(nil)) + println("len(C.GoStringN(nil, 0)):", len(C.GoStringN(nil, 0))) + println("len(C.GoBytes(nil, 0)):", len(C.GoBytes(nil, 0))) + // 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 09e1b4f09..702dab0c0 100644 --- a/testdata/cgo/main.h +++ b/testdata/cgo/main.h @@ -141,6 +141,8 @@ extern int smallEnumWidth; extern int cflagsConstant; +extern char globalChars[4]; + // test duplicate definitions int add(int a, int b); extern int global; diff --git a/testdata/cgo/out.txt b/testdata/cgo/out.txt index ca77594f5..375ad1f6f 100644 --- a/testdata/cgo/out.txt +++ b/testdata/cgo/out.txt @@ -61,5 +61,12 @@ option 2A: 20 option 3A: 21 enum width matches: true CFLAGS value: 17 +cstr length: 18 +C.CString: string passed to C +C.charBuf: 2 0 4 8 +C.CStringN: 4 2 0 4 8 +C.GoString(nil): +len(C.GoStringN(nil, 0)): 0 +len(C.GoBytes(nil, 0)): 0 copied string: foobar line written using C puts |