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More long path name support on Windows, this time in program execution.

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Allows long paths for the executable and redirected stdin/stdout/stderr.
Addresses PR21563.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222671 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Paul Robinson
2014-11-24 18:05:29 +00:00
parent 5de3458c18
commit 2dc4746332
4 changed files with 74 additions and 9 deletions
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50
unittests/Support/ProgramTest.cpp
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@ -70,6 +70,56 @@ static void CopyEnvironment(std::vector<const char *> &out) {
}
}
#ifdef LLVM_ON_WIN32
TEST(ProgramTest, CreateProcessLongPath) {
if (getenv("LLVM_PROGRAM_TEST_LONG_PATH"))
exit(0);
// getMainExecutable returns an absolute path; prepend the long-path prefix.
std::string MyAbsExe =
sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
std::string MyExe;
if (!StringRef(MyAbsExe).startswith("\\\\?\\"))
MyExe.append("\\\\?\\");
MyExe.append(MyAbsExe);
const char *ArgV[] = {
MyExe.c_str(),
"--gtest_filter=ProgramTest.CreateProcessLongPath",
nullptr
};
// Add LLVM_PROGRAM_TEST_LONG_PATH to the environment of the child.
std::vector<const char *> EnvP;
CopyEnvironment(EnvP);
EnvP.push_back("LLVM_PROGRAM_TEST_LONG_PATH=1");
EnvP.push_back(nullptr);
// Redirect stdout to a long path.
SmallString<128> TestDirectory;
ASSERT_NO_ERROR(
fs::createUniqueDirectory("program-redirect-test", TestDirectory));
SmallString<256> LongPath(TestDirectory);
LongPath.push_back('\\');
// MAX_PATH = 260
LongPath.append(260 - TestDirectory.size(), 'a');
StringRef LongPathRef(LongPath);
std::string Error;
bool ExecutionFailed;
const StringRef *Redirects[] = { nullptr, &LongPathRef, nullptr };
int RC = ExecuteAndWait(MyExe, ArgV, &EnvP[0], Redirects,
/*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &Error,
&ExecutionFailed);
EXPECT_FALSE(ExecutionFailed) << Error;
EXPECT_EQ(0, RC);
// Remove the long stdout.
ASSERT_NO_ERROR(fs::remove(Twine(LongPath)));
ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory)));
}
#endif
TEST(ProgramTest, CreateProcessTrailingSlash) {
if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&