Files
clang-p2996/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump2gig.pass.cpp
Ryan Prichard bce3b50593 [libc++][Android] Mark tests XFAIL/UNSUPPORTED (#69271)
Mark tests as necessary to accommodate Android L (5.0 / API 21) and up.

Add three Android lit features:
 - android
 - android-device-api=(21,22,23,...)
 - LIBCXX-ANDROID-FIXME (for failures that need follow-up work)

Enable an AIX workaround in filesystem_test_helper.h for the broken
chmod on older Android devices.

Mark failing test with XFAIL or UNSUPPORTED:
 - Mark modules tests as UNSUPPORTED, matching other configurations.
 - Mark a gdb test as UNSUPPORTED.
 - XFAIL tests for old devices that lack an API (fmemopen).
- XFAIL various FS tests (because SELinux blocks FIFO and hard linking,
because fchmodat is broken on old devices).
- XFAIL various locale tests (because Bionic has limited locale
support). (Also XFAIL an re.traits test.)
- XFAIL some print.fun tests because the error exception has no system
error string.
- Mark std::{cin,wcin} tests UNSUPPORTED because they hang with
adb_run.py on old devices.
 - Mark a few tests UNSUPPORTED because they allocate too much memory.
 - notify_one.pass.cpp is flaky on Android.
- XFAIL libc++abi demangler test because of Android's special long
double on x86[-64].

N.B. The `__ANDROID_API__` macro specifies a minimum required API level
at build-time, whereas the android-device-api lit feature is the
detected API level of the device at run-time. The android-device-api
value will be >= `__ANDROID_API__`.

This commit was split out from https://reviews.llvm.org/D139147.

Fixes: https://github.com/llvm/llvm-project/issues/69270
2023-10-19 17:27:01 -07:00

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <streambuf>
// UNSUPPORTED: c++03
// template <class charT, class traits = char_traits<charT> >
// class basic_streambuf;
// void pbump(int n);
//
// REQUIRES: long_tests
// Unsupported for no-exceptions builds because they have no way to report an
// allocation failure when attempting to allocate the 2GiB string.
// UNSUPPORTED: no-exceptions
// Android devices frequently don't have enough memory to run this test. Rather
// than throw std::bad_alloc, exhausting memory triggers the OOM Killer.
// UNSUPPORTED: LIBCXX-ANDROID-FIXME
#include <sstream>
#include <cassert>
#include "test_macros.h"
struct SB : std::stringbuf
{
SB() : std::stringbuf(std::ios::ate|std::ios::out) { }
const char* pubpbase() const { return pbase(); }
const char* pubpptr() const { return pptr(); }
};
int main(int, char**)
{
try {
std::string str(2147483648, 'a');
SB sb;
sb.str(str);
assert(sb.pubpbase() <= sb.pubpptr());
}
catch (const std::length_error &) {} // maybe the string can't take 2GB
catch (const std::bad_alloc &) {} // maybe we don't have enough RAM
return 0;
}