mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
2fc5cbdc14
This replaces swiftMSVCRT with swiftCRT. The big difference here is that the `visualc` module is no longer imported nor exported. The `visualc` module remains in use for a singular test wrt availability, but this should effectively remove the need for the `visualc` module. The difference between the MSVCRT and ucrt module was not well understood by most. MSVCRT provided ucrt AND visualc, combining pieces of the old MSVCRT and the newer ucrt. The ucrt module is what you really wanted most of the time, however, would need to use MSVCRT for the convenience aliases for type-generic math and the deprecated math constants. Unfortunately, we cannot shadow the `ucrt` module and create a Swift SDK overlay for ucrt as that seems to result in circular dependencies when processing the `_Concurrency` module. Although this makes using the C library easier for most people, it has a more important subtle change: it cleaves the dependency on visualc. This means that this enables use of Swift without Visual Studio for the singular purpose of providing 3 header files. Additionally, it removes the need for the installation of 2 of the 4 support files. This greatly simplifies the deployment process on Windows.
101 lines
2.3 KiB
Swift
101 lines
2.3 KiB
Swift
/* magic */
|
|
// Do not edit the line above.
|
|
|
|
// RUN: %empty-directory(%t)
|
|
// RUN: %target-run-simple-swift %s %t | %FileCheck %s
|
|
|
|
// REQUIRES: executable_test
|
|
|
|
// TODO: rdar://problem/33388782
|
|
// REQUIRES: CPU=x86_64
|
|
|
|
#if canImport(Darwin)
|
|
import Darwin
|
|
#elseif canImport(Glibc)
|
|
import Glibc
|
|
#elseif os(Windows)
|
|
import CRT
|
|
|
|
let S_IRUSR: Int32 = ucrt._S_IREAD
|
|
let S_IWUSR: Int32 = 0
|
|
let S_IXUSR: Int32 = 0
|
|
|
|
let S_IRGRP: Int32 = 0o0040
|
|
let S_IROTH: Int32 = 0o0004
|
|
#else
|
|
#error("Unsupported platform")
|
|
#endif
|
|
|
|
let sourcePath = CommandLine.arguments[1]
|
|
let tempPath = CommandLine.arguments[2] + "/libc.txt"
|
|
|
|
// CHECK: Hello world
|
|
fputs("Hello world", stdout)
|
|
|
|
// CHECK: 4294967295
|
|
print("\(UINT32_MAX)")
|
|
|
|
// CHECK: the magic word is ///* magic *///
|
|
let sourceFile = open(sourcePath, O_RDONLY)
|
|
assert(sourceFile >= 0)
|
|
var bytes = UnsafeMutablePointer<CChar>.allocate(capacity: 12)
|
|
var readed = read(sourceFile, bytes, 11)
|
|
close(sourceFile)
|
|
assert(readed == 11)
|
|
bytes[11] = CChar(0)
|
|
print("the magic word is //\(String(cString: bytes))//")
|
|
|
|
// CHECK: O_CREAT|O_EXCL returned errno *17*
|
|
let errFile =
|
|
open(sourcePath, O_RDONLY | O_CREAT | O_EXCL)
|
|
if errFile != -1 {
|
|
print("O_CREAT|O_EXCL failed to return an error")
|
|
} else {
|
|
let e = errno
|
|
print("O_CREAT|O_EXCL returned errno *\(e)*")
|
|
}
|
|
|
|
// CHECK-NOT: error
|
|
// CHECK: created mode *{{33216|33060}}* *{{33216|33060}}*
|
|
let tempFile =
|
|
open(tempPath, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR | S_IXUSR)
|
|
if tempFile == -1 {
|
|
let e = errno
|
|
print("error: open(tempPath \(tempPath)) returned -1, errno \(e)")
|
|
abort()
|
|
}
|
|
let written = write(tempFile, bytes, 11)
|
|
if (written != 11) {
|
|
print("error: write(tempFile) returned \(written), errno \(errno)")
|
|
abort()
|
|
}
|
|
|
|
var err: Int32
|
|
var statbuf1 = stat()
|
|
err = fstat(tempFile, &statbuf1)
|
|
if err != 0 {
|
|
let e = errno
|
|
print("error: fstat returned \(err), errno \(e)")
|
|
abort()
|
|
}
|
|
|
|
close(tempFile)
|
|
|
|
var statbuf2 = stat()
|
|
err = stat(tempPath, &statbuf2)
|
|
if err != 0 {
|
|
let e = errno
|
|
print("error: stat returned \(err), errno \(e)")
|
|
abort()
|
|
}
|
|
|
|
print("created mode *\(statbuf1.st_mode)* *\(statbuf2.st_mode)*")
|
|
|
|
#if os(Windows)
|
|
assert(statbuf1.st_mode == S_IFREG | S_IRUSR | S_IRGRP | S_IROTH)
|
|
#else
|
|
assert(statbuf1.st_mode == S_IFREG | S_IRUSR | S_IWUSR | S_IXUSR)
|
|
#endif
|
|
assert(statbuf1.st_mode == statbuf2.st_mode)
|
|
|