mirror of
https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
b7a3fd8d2f
Here is the proposal: https://github.com/golang/go/issues/56378 They are documented here: https://pkg.go.dev/cmd/cgo@master#hdr-Optimizing_calls_of_C_code This would have been very useful to fix https://github.com/tinygo-org/bluetooth/issues/176 in a nice way. That bug is now fixed in a different way using a wrapper function, but once this new noescape pragma gets included in TinyGo we could remove the workaround and use `#cgo noescape` instead.
90 lines
3.0 KiB
Go
90 lines
3.0 KiB
Go
// CGo errors:
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// testdata/errors.go:14:1: missing function name in #cgo noescape line
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// testdata/errors.go:15:1: multiple function names in #cgo noescape line
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// testdata/errors.go:4:2: warning: some warning
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// testdata/errors.go:11:9: error: unknown type name 'someType'
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// testdata/errors.go:31:5: warning: another warning
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// testdata/errors.go:18:23: unexpected token ), expected end of expression
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// testdata/errors.go:26:26: unexpected token ), expected end of expression
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// testdata/errors.go:21:33: unexpected token ), expected end of expression
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// testdata/errors.go:22:34: unexpected token ), expected end of expression
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// -: unexpected token INT, expected end of expression
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// testdata/errors.go:35:35: unexpected number of parameters: expected 2, got 3
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// testdata/errors.go:36:31: unexpected number of parameters: expected 2, got 1
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// testdata/errors.go:3:1: function "unusedFunction" in #cgo noescape line is not used
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// Type checking errors after CGo processing:
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// testdata/errors.go:102: cannot use 2 << 10 (untyped int constant 2048) as C.char value in variable declaration (overflows)
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// testdata/errors.go:105: unknown field z in struct literal
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// testdata/errors.go:108: undefined: C.SOME_CONST_1
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// testdata/errors.go:110: cannot use C.SOME_CONST_3 (untyped int constant 1234) as byte value in variable declaration (overflows)
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// testdata/errors.go:112: undefined: C.SOME_CONST_4
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// testdata/errors.go:114: undefined: C.SOME_CONST_b
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// testdata/errors.go:116: undefined: C.SOME_CONST_startspace
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// testdata/errors.go:119: undefined: C.SOME_PARAM_CONST_invalid
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// testdata/errors.go:122: undefined: C.add_toomuch
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// testdata/errors.go:123: undefined: C.add_toolittle
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package main
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import "syscall"
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import "unsafe"
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var _ unsafe.Pointer
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//go:linkname C.CString runtime.cgo_CString
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func C.CString(string) *C.char
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//go:linkname C.GoString runtime.cgo_GoString
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func C.GoString(*C.char) string
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//go:linkname C.__GoStringN runtime.cgo_GoStringN
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func C.__GoStringN(*C.char, uintptr) string
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func C.GoStringN(cstr *C.char, length C.int) string {
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return C.__GoStringN(cstr, uintptr(length))
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}
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//go:linkname C.__GoBytes runtime.cgo_GoBytes
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func C.__GoBytes(unsafe.Pointer, uintptr) []byte
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func C.GoBytes(ptr unsafe.Pointer, length C.int) []byte {
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return C.__GoBytes(ptr, uintptr(length))
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}
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//go:linkname C.__CBytes runtime.cgo_CBytes
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func C.__CBytes([]byte) unsafe.Pointer
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func C.CBytes(b []byte) unsafe.Pointer {
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return C.__CBytes(b)
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}
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//go:linkname C.__get_errno_num runtime.cgo_errno
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func C.__get_errno_num() uintptr
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func C.__get_errno() error {
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return syscall.Errno(C.__get_errno_num())
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}
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type (
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C.char uint8
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C.schar int8
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C.uchar uint8
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C.short int16
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C.ushort uint16
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C.int int32
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C.uint uint32
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C.long int32
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C.ulong uint32
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C.longlong int64
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C.ulonglong uint64
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)
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type C.struct_point_t struct {
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x C.int
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y C.int
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}
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type C.point_t = C.struct_point_t
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const C.SOME_CONST_3 = 1234
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const C.SOME_PARAM_CONST_valid = 3 + 4
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