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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.
68 lines
1.3 KiB
Go
68 lines
1.3 KiB
Go
package main
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/*
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#warning some warning
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typedef struct {
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int x;
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int y;
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} point_t;
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typedef someType noType; // undefined type
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// Some invalid noescape lines
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#cgo noescape
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#cgo noescape foo bar
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#cgo noescape unusedFunction
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#define SOME_CONST_1 5) // invalid const syntax
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#define SOME_CONST_2 6) // const not used (so no error)
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#define SOME_CONST_3 1234 // const too large for byte
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#define SOME_CONST_b 3 ) // const with lots of weird whitespace (to test error locations)
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# define SOME_CONST_startspace 3)
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*/
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//
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//
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// #define SOME_CONST_4 8) // after some empty lines
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// #cgo CFLAGS: -DSOME_PARAM_CONST_invalid=3/+3
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// #cgo CFLAGS: -DSOME_PARAM_CONST_valid=3+4
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import "C"
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// #warning another warning
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import "C"
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// #define add(a, b) (a+b)
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// #define add_toomuch add(1, 2, 3)
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// #define add_toolittle add(1)
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import "C"
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// Make sure that errors for the following lines won't change with future
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// additions to the CGo preamble.
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//
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//line errors.go:100
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var (
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// constant too large
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_ C.char = 2 << 10
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// z member does not exist
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_ C.point_t = C.point_t{z: 3}
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// constant has syntax error
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_ = C.SOME_CONST_1
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_ byte = C.SOME_CONST_3
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_ = C.SOME_CONST_4
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_ = C.SOME_CONST_b
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_ = C.SOME_CONST_startspace
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// constants passed by a command line parameter
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_ = C.SOME_PARAM_CONST_invalid
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_ = C.SOME_PARAM_CONST_valid
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_ = C.add_toomuch
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_ = C.add_toolittle
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)
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