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* Implement midpoint for floating point types. Reviewed as ↵Marshall Clow2019-04-252-0/+40
| | | | | | https://reviews.llvm.org/D61014. llvm-svn: 359184
* Add std::is_constant_evaluated.Eric Fiselier2019-04-242-6/+6
| | | | | | | | | Clang recently added __builtin_is_constant_evaluated() and GCC 9.0 has it as well. This patch adds support for it in libc++. llvm-svn: 359119
* Fix implementation of ::abs and std::abs LWG 2192.Eric Fiselier2019-04-231-1/+49
| | | | | | | | | | | | | | | | | | | Summary: All overloads of `::abs` and `std::abs` must be present in both `<cmath>` and `<cstdlib>`. This is problematic to implement because C defines `fabs` in `math.h` and `labs` in `stdlib.h`. This introduces a circular dependency between the two headers. This patch implements that requirement by moving `abs` into `math.h` and making `stdlib.h` include `math.h`. In order to get the underlying C declarations from the "real" `stdlib.h` inside our `math.h` we need some trickery. Specifically we need to make `stdlib.h` include next itself. Suggestions for a cleaner implementation are welcome. Reviewers: mclow.lists, ldionne Reviewed By: ldionne Subscribers: krytarowski, fedor.sergeev, dexonsmith, jdoerfert, jsji, libcxx-commits Differential Revision: https://reviews.llvm.org/D60097 llvm-svn: 359020
* [libcxx] [test] Revert r356632 add (void) casts to operator new calls, to ↵Billy Robert O'Neal III2019-03-216-6/+6
| | | | | | suppress warnings generated by [[nodiscard]]." llvm-svn: 356635
* [libcxx] [test] Add (void) casts to operator new calls, to suppress warnings ↵Billy Robert O'Neal III2019-03-206-6/+6
| | | | | | | | generated by [[nodiscard]]. This allows these tests to pass when compiled by MSVC++. llvm-svn: 356632
* Support tests in freestandingJF Bastien2019-02-04210-210/+546
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Freestanding is *weird*. The standard allows it to differ in a bunch of odd manners from regular C++, and the committee would like to improve that situation. I'd like to make libc++ behave better with what freestanding should be, so that it can be a tool we use in improving the standard. To do that we need to try stuff out, both with "freestanding the language mode" and "freestanding the library subset". Let's start with the super basic: run the libc++ tests in freestanding, using clang as the compiler, and see what works. The easiest hack to do this: In utils/libcxx/test/config.py add: self.cxx.compile_flags += ['-ffreestanding'] Run the tests and they all fail. Why? Because in freestanding `main` isn't special. This "not special" property has two effects: main doesn't get mangled, and main isn't allowed to omit its `return` statement. The first means main gets mangled and the linker can't create a valid executable for us to test. The second means we spew out warnings (ew) and the compiler doesn't insert the `return` we omitted, and main just falls of the end and does whatever undefined behavior (if you're luck, ud2 leading to non-zero return code). Let's start my work with the basics. This patch changes all libc++ tests to declare `main` as `int main(int, char**` so it mangles consistently (enabling us to declare another `extern "C"` main for freestanding which calls the mangled one), and adds `return 0;` to all places where it was missing. This touches 6124 files, and I apologize. The former was done with The Magic Of Sed. The later was done with a (not quite correct but decent) clang tool: https://gist.github.com/jfbastien/793819ff360baa845483dde81170feed This works for most tests, though I did have to adjust a few places when e.g. the test runs with `-x c`, macros are used for main (such as for the filesystem tests), etc. Once this is in we can create a freestanding bot which will prevent further regressions. After that, we can start the real work of supporting C++ freestanding fairly well in libc++. <rdar://problem/47754795> Reviewers: ldionne, mclow.lists, EricWF Subscribers: christof, jkorous, dexonsmith, arphaman, miyuki, libcxx-commits Differential Revision: https://reviews.llvm.org/D57624 llvm-svn: 353086
* Move the feature test macros script to the utils directory.Eric Fiselier2019-02-021-975/+0
| | | | | | | It doesn't make a lot of sense to keep it with the tests, deep into the test suite directonies. llvm-svn: 352970
* [libcxx] Include <cstring> in tests that use strcmpLouis Dionne2019-01-221-2/+2
| | | | | | | Reviewed as https://reviews.llvm.org/D56503. Thanks to Andrey Maksimov for the patch. llvm-svn: 351847
* Fix aligned allocation availability XFAILs after D56445.Eric Fiselier2019-01-208-24/+40
| | | | | | | | | | D56445 bumped the minimum Mac OS X version required for aligned allocation from 10.13 to 10.14. This caused libc++ tests depending on the old value to break. This patch updates the XFAILs for those tests to include 10.13. llvm-svn: 351670
* Revert "Fix aligned allocation availability XFAILs after D56445."Eric Fiselier2019-01-208-24/+16
| | | | | | | | | This reverts commit r351625. That fix was incomplete. I'm reverting so I can commit a complete fix in a single revision. llvm-svn: 351669
* Update generator script to use the new license file header.Chandler Carruth2019-01-191-4/+3
| | | | llvm-svn: 351650
* Update more file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-19211-844/+633
| | | | | | | | | | | | | | | | | | to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
* Fix aligned allocation availability XFAILs after D56445.Eric Fiselier2019-01-198-16/+24
| | | | | | | | | | D56445 bumped the minimum Mac OS X version required for aligned allocation from 10.13 to 10.14. This caused libc++ tests depending on the old value to break. This patch updates the XFAILs for those tests to include 10.13. llvm-svn: 351625
* correct script name in generated testsEric Fiselier2019-01-1643-89/+91
| | | | llvm-svn: 351299
* Fix feature test macros for atomics/mutexes without threadingEric Fiselier2019-01-164-73/+177
| | | | llvm-svn: 351291
* Implement feature test macros using a script.Eric Fiselier2019-01-1643-1054/+7079
| | | | | | | | | | | | | | | | | | | | Summary: This patch implements all the feature test macros libc++ currently supports, as specified by the standard or cppreference prior to C++2a. The tests and `<version>` header are generated using a script. The script contains a table of each feature test macro, the headers it should be accessible from, and its values of each dialect of C++. When a new feature test macro is added or needed, the table should be updated and the script re-run. Reviewers: mclow.lists, jfb, serge-sans-paille Reviewed By: mclow.lists Subscribers: arphaman, jfb, ldionne, libcxx-commits Differential Revision: https://reviews.llvm.org/D56750 llvm-svn: 351286
* [test] Fix logic error in <compare> tests; enable for MSVC Dev16Casey Carter2019-01-153-3/+3
| | | | | | Submitted upstream as https://reviews.llvm.org/D53763. llvm-svn: 351148
* Add the feature test macros that were defined in p1353r0 to the headers of ↵Marshall Clow2019-01-073-1/+35
| | | | | | the appropriate tests. No actual tests yet, so NFC. llvm-svn: 350535
* Unbreak green dragon bots w/o __builtin_launderEric Fiselier2018-12-171-2/+2
| | | | llvm-svn: 349373
* Expect Clang diagnostics in std::launder testEric Fiselier2018-12-171-0/+2
| | | | llvm-svn: 349364
* Implement P1209 - Adopt Consistent Container Erasure from Library ↵Marshall Clow2018-12-149-0/+100
| | | | | | Fundamentals 2 for C++20. Reviewed as https://reviews.llvm.org/D55532 llvm-svn: 349178
* Fix problems with char8_t stuff on compilers that don't support char8_t yetMarshall Clow2018-12-119-9/+9
| | | | llvm-svn: 348829
* Second part of P0482 - char8_t. Reviewed as https://reviews.llvm.org/D55308Marshall Clow2018-12-1145-8/+275
| | | | llvm-svn: 348828
* [libcxx] Remove the availability_markup LIT featureLouis Dionne2018-12-072-10/+10
| | | | | | | It is now equivalent to the 'availability' LIT feature, so there's no reason to keep both. llvm-svn: 348653
* [libcxx] Add XFAILs for aligned allocation tests on AppleClang 9Louis Dionne2018-12-068-96/+96
| | | | | | Some people are still running the test suite using AppleClang 9. llvm-svn: 348507
* First part of P0482 - Establish that char8_t is an integral type, and that ↵Marshall Clow2018-11-2932-0/+165
| | | | | | numeric_limits<char8_t> is valid and sane. (second try) llvm-svn: 347930
* Revert commit r347904 because it broke older compilersMarshall Clow2018-11-2932-165/+0
| | | | llvm-svn: 347908
* First part of P0482 - Establish that char8_t is an integral type, and that ↵Marshall Clow2018-11-2932-0/+165
| | | | | | numeric_limits<char8_t> is valid and sane. llvm-svn: 347904
* [libcxx] Fix XFAILs for aligned allocation testsLouis Dionne2018-11-268-132/+152
| | | | | | | | | | In r339743, I marked several aligned allocation tests as downright unsupported on macosx in an attempt to unbreak the build. It turns out that marking them as unuspported whenever we're on OS X is way too coarse grained. This commit marks the tests as XFAIL with more granularity. llvm-svn: 347585
* [NFC] Rename lit feature to '-fsized-deallocation' for consistencyLouis Dionne2018-11-212-2/+2
| | | | | | | The '-faligned-allocation' flag uses a feature with the same name (with a leading dash). llvm-svn: 347367
* [libcxx] [test] Strip trailing whitespace. NFC.Stephan T. Lavavej2018-11-141-1/+1
| | | | llvm-svn: 346826
* Update commnents to reflect the changes for LWG#3127. NFCMarshall Clow2018-10-222-1/+31
| | | | llvm-svn: 344951
* Update commnents to reflect the changes for LWG#3122. NFCMarshall Clow2018-10-222-0/+2
| | | | llvm-svn: 344950
* [libcxx] [test] Don't detect Windows' UCRT with TEST_COMPILER_C1XXBilly Robert O'Neal III2018-10-201-4/+2
| | | | | | The test is trying to avoid saying aligned_alloc on Windows' UCRT, which does not (and can not) implement aligned_alloc. However, it's testing for c1xx, meaning clang on Windows will fail this test when using the UCRT. llvm-svn: 344829
* Fix threaded test under no-threading configurationEric Fiselier2018-10-012-0/+4
| | | | llvm-svn: 343432
* Implement the infrastructure for feature-test macros. Very few actual ↵Marshall Clow2018-09-1240-0/+1486
| | | | | | feature test macros, though. Reviewed as: https://reviews.llvm.org/D51955 llvm-svn: 342073
* Update the failure annotations for the uncaught_exceptions test. The ↵Marshall Clow2018-09-121-5/+5
| | | | | | underlying abi library on some Mac OS versions does not support the plural uncaught_exceptions, so libc++ emulates it from the singlar; this means it will only return 0 or 1. llvm-svn: 342063
* Selectively import timespec_get into namespace std, since some C libraries ↵Marshall Clow2018-08-151-1/+1
| | | | | | don't have it. Reviewed as https://reviews.llvm.org/D50799 llvm-svn: 339816
* Mark the at_exit and at_quick_exit tests as unsupported under C++98 an 03, ↵Marshall Clow2018-08-153-2/+3
| | | | | | since those calls were introduced in C++11. They're already guarded by an ifdef in the code, so this is a 'belt-and-suspenders' change. llvm-svn: 339804
* [libcxx] Fix XFAILs for aligned allocation tests on older OSX versionsLouis Dionne2018-08-1515-96/+185
| | | | | | | | | | | | | | | | | Summary: Since r338934, Clang emits an error when aligned allocation functions are used in conjunction with a system libc++ dylib that does not support those functions. This causes some tests to fail when testing against older libc++ dylibs. This commit marks those tests as UNSUPPORTED, and also documents the various reasons for the tests being unsupported. Reviewers: vsapsai, EricWF Subscribers: christof, dexonsmith, cfe-commits, mclow.lists, EricWF Differential Revision: https://reviews.llvm.org/D50341 llvm-svn: 339743
* [libc++] Disable failing C11 feature tests for <cfloat> and <float.h>Louis Dionne2018-08-151-3/+3
| | | | | | | | | | | | | | Summary: Those tests are breaking the test bots. A Bugzilla has been filed to make sure those tests are re-enabled: https://bugs.llvm.org/show_bug.cgi?id=38572 Reviewers: mclow.lists, EricWF Subscribers: krytarowski, christof, dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D50748 llvm-svn: 339742
* [libc++] Add missing #include in C11 features testsLouis Dionne2018-08-141-0/+2
| | | | | | | | | | | | | | | | | | Summary: These #includes are quite important, since otherwise any #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) checks are always false, and so we don't actually test for C11 support in the standard library. Reviewers: mclow.lists, EricWF Subscribers: christof, dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D50674 llvm-svn: 339675
* Final bit of P0063 - make sure that aligned_alloc is available when the ↵Marshall Clow2018-07-311-0/+10
| | | | | | underlying C library supports it llvm-svn: 338457
* Test for the presence of a bunch of new macros for c++17. These macros come ↵Marshall Clow2018-07-311-0/+42
| | | | | | from C11. Part of P0063 llvm-svn: 338454
* import timespec and timespec_get into namespace std if we're under c++17 or ↵Marshall Clow2018-07-311-0/+14
| | | | | | later AND the underlying C library has them. Fixes PR#38220, but doesn't implement all of P0063 yet. llvm-svn: 338419
* [libcxx] [test] Strip trailing whitespace. NFC.Stephan T. Lavavej2018-06-141-2/+2
| | | | llvm-svn: 334676
* Fix embarrasing typo in uncaught_exceptions. Update tests to really test ↵Marshall Clow2018-05-291-21/+29
| | | | | | this. Thanks to Peter Klotz for calling my attention to this. llvm-svn: 333467
* [libcxx] [test] Fix whitespace, NFC.Stephan T. Lavavej2018-04-123-8/+8
| | | | | | test/std almost always uses spaces; now it is entirely tab-free. llvm-svn: 329978
* Implement P0768r1: Library support for the Spaceship Operator.Eric Fiselier2018-04-066-0/+804
| | | | | | | | | | | | this patch adds the <compare> header and implements all of it except for [comp.alg]. As I understand it, the header is needed by the compiler in when implementing the semantics of operator<=>. For that reason I feel it's important to land this header early, despite all compilers lacking support. llvm-svn: 329460
* Implement P0754R2: The <version> header.Marshall Clow2018-04-031-0/+17
| | | | llvm-svn: 329075
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