File: global-c-functionptr.swift

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (33 lines) | stat: -rw-r--r-- 1,068 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
// Testcase for an IRGen crash with function pointers in static globals and multi-threaded compilation.

// First test: check if the compilation succeeds and the code is correct.

// RUN: %empty-directory(%t) 
// RUN: %target-build-swift -O -module-name=Test %s -o %t/a.out
// RUN: %target-codesign %t/a.out
// RUN: %target-run %t/a.out | %FileCheck %s -check-prefix=CHECK-OUTPUT

// Second test (bonus): check if the optimization is done: statically initialize a global with a C-function pointer

// RUN: %target-build-swift -O -module-name=Test %s -emit-sil | %FileCheck %s -check-prefix=CHECK-SIL

// REQUIRES: executable_test
// REQUIRES: swift_in_compiler


internal func cFn(_ i: Int) -> Int {
  return i + 1
}

public struct S {
  // CHECK-SIL-LABEL: sil_global @$s4Test1SV6cFnPtryS2iXCvpZ : $@convention(c) (Int) -> Int = {
  // CHECK-SIL:         %initval = function_ref @$s4Test3cFnyS2iFTo : $@convention(c) (Int) -> Int
  static public var cFnPtr: @convention(c) (Int) -> Int = cFn
}

func testit() {
  // CHECK-OUTPUT: 28
  print(S.cFnPtr(27))
}

testit()