[ConstraintSystem] NFC: Add test-cases for interactions between Swift and C pointers

2025-12-14 20:36:38 +01:00 · 2021-06-16 15:39:41 -07:00
parent 9e7a670295
commit 621ea81e7b
2 changed files with 156 additions and 0 deletions
--- a/test/Constraints/swift_to_c_pointer_conversions.swift.gyb
+++ b/test/Constraints/swift_to_c_pointer_conversions.swift.gyb
@@ -0,0 +1,116 @@
+// %target-swift-frontend(mock-sdk: %clang-importer-sdk-nosource -I %t) -import-objc-header %S/Inputs/overloaded_async_method.h %s -typecheck -verify
+
+// RUN: %empty-directory(%t)
+
+// RUN: %gyb %s -o %t/swift_to_c_pointer_conversions.swift
+
+// RUN: %line-directive %t/swift_to_c_pointer_conversions.swift -- %target-swift-frontend(mock-sdk: %clang-importer-sdk-nosource -I %t) -import-objc-header %S/Inputs/c_pointer_conversions.h %t/swift_to_c_pointer_conversions.swift -typecheck -verify
+
+func test_raw_ptr(ptr: UnsafeRawPointer) {
+  char_ptr_func(ptr) // expected-error {{}}
+  unsigned_char_ptr_func(ptr) // expected-error {{}}
+
+  const_char_ptr_func(ptr) // Ok
+  const_unsigned_char_ptr_func(ptr) // Ok
+
+  % for Size in ['16', '32', '64']:
+    int_${Size}_ptr_func(ptr) // expected-error {{}}
+    uint_${Size}_ptr_func(ptr) // expected-error {{}}
+
+    const_int_${Size}_ptr_func(ptr) // expected-error {{}}
+    const_uint_${Size}_ptr_func(ptr) // expected-error {{}}
+  % end
+}
+
+func test_mutable_raw_pointer(ptr: UnsafeMutableRawPointer) {
+  char_ptr_func(ptr) // Ok
+  unsigned_char_ptr_func(ptr) // Ok
+
+  const_char_ptr_func(ptr) // Ok
+  const_unsigned_char_ptr_func(ptr) // Ok
+
+  % for Size in ['16', '32', '64']:
+    int_${Size}_ptr_func(ptr) // expected-error {{}}
+    uint_${Size}_ptr_func(ptr) // expected-error {{}}
+
+    const_int_${Size}_ptr_func(ptr) // expected-error {{}}
+    const_uint_${Size}_ptr_func(ptr) // expected-error {{}}
+  % end
+}
+
+%for TestPtrSize in ['16', '32', '64']:
+// Immutable pointers can be converted only to their immutable (regardless of sign) counterparts.
+func test_${TestPtrSize}_bit_ptrs(sptr: UnsafePointer<Int${TestPtrSize}>,
+                                  uptr: UnsafePointer<UInt${TestPtrSize}>) {
+  char_ptr_func(sptr) // expected-error {{}}
+  char_ptr_func(uptr) // expected-error {{}}
+
+  const_char_ptr_func(sptr) // Ok
+  const_char_ptr_func(uptr) // Ok
+
+  unsigned_char_ptr_func(sptr) // expected-error {{}}
+  unsigned_char_ptr_func(uptr) // expected-error {{}}
+
+  const_unsigned_char_ptr_func(sptr) // Ok
+  const_unsigned_char_ptr_func(uptr) // Ok
+
+% for pointer in ['sptr', 'uptr']:
+  % for Size in ['16', '32', '64']:
+
+    % if Size == TestPtrSize:
+      int_${TestPtrSize}_ptr_func(${pointer}) // expected-error {{}}
+      uint_${TestPtrSize}_ptr_func(${pointer}) // expected-error {{}}
+
+      const_int_${TestPtrSize}_ptr_func(${pointer}) // Ok
+      const_uint_${TestPtrSize}_ptr_func(${pointer}) // Ok
+    % else:
+      int_${Size}_ptr_func(${pointer}) // expected-error {{}}
+      uint_${Size}_ptr_func(${pointer}) // expected-error {{}}
+
+      const_int_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+      const_uint_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+    % end
+  % end
+% end
+}
+
+% end
+
+%for TestPtrSize in ['16', '32', '64']:
+// Mutable pointers can be converted to both immutable and mutable pointers when
+// passed to C/ObjC imported functions.
+func test_mutable_${TestPtrSize}_bit_ptrs(sptr: UnsafeMutablePointer<Int${TestPtrSize}>,
+                                          uptr: UnsafeMutablePointer<UInt${TestPtrSize}>) {
+  char_ptr_func(sptr) // Ok
+  char_ptr_func(uptr) // Ok
+
+  const_char_ptr_func(sptr) // Ok
+  const_char_ptr_func(uptr) // Ok
+
+  unsigned_char_ptr_func(sptr) // Ok
+  unsigned_char_ptr_func(uptr) // Ok
+
+  const_unsigned_char_ptr_func(sptr) // Ok
+  const_unsigned_char_ptr_func(uptr) // Ok
+
+% for pointer in ['sptr', 'uptr']:
+  % for Size in ['16', '32', '64']:
+
+    % if Size == TestPtrSize:
+      int_${TestPtrSize}_ptr_func(${pointer}) // Ok
+      uint_${TestPtrSize}_ptr_func(${pointer}) // Ok
+
+      const_int_${TestPtrSize}_ptr_func(${pointer}) // Ok
+      const_uint_${TestPtrSize}_ptr_func(${pointer}) // Ok
+    % else:
+      int_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+      uint_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+
+      const_int_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+      const_uint_${Size}_ptr_func(${pointer}) // expected-error {{}} expected-note {{}}
+    % end
+  % end
+% end
+}
+
+% end