Changes in norm.pass.cpp

7fc6a556 - Add include for 'test_macros.h' to all the tests that were missing them. Thanks to Zoe for the (big, but simple) patch. NFC intended.

Fri, 31 May 2019 18:35:30 +0000

Add include for 'test_macros.h' to all the tests that were missing them. Thanks to Zoe for the (big, but simple) patch. NFC intended.llvm-svn: 362252 List of files: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp

2df59c50 - Support tests in freestanding

Mon, 04 Feb 2019 20:31:13 +0000

Support tests in freestandingSummary:Freestanding is *weird*. The standard allows it to differ in a bunch of oddmanners from regular C++, and the committee would like to improve thatsituation. I'd like to make libc++ behave better with what freestanding shouldbe, so that it can be a tool we use in improving the standard. To do that weneed 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, usingclang 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" propertyhas 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'tcreate 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 justfalls of the end and does whatever undefined behavior (if you're luck, ud2leading to non-zero return code).Let's start my work with the basics. This patch changes all libc++ tests todeclare `main` as `int main(int, char**` so it mangles consistently (enabling usto declare another `extern "C"` main for freestanding which calls the mangledone), and adds `return 0;` to all places where it was missing. This touches 6124files, 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/793819ff360baa845483dde81170feedThis 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 filesystemtests), etc.Once this is in we can create a freestanding bot which will prevent furtherregressions. After that, we can start the real work of supporting C++freestanding fairly well in libc++.Reviewers: ldionne, mclow.lists, EricWFSubscribers: christof, jkorous, dexonsmith, arphaman, miyuki, libcxx-commitsDifferential Revision: https://reviews.llvm.org/D57624llvm-svn: 353086 List of files: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp

57b08b09 - Update more file headers across all of the LLVM projects in the monorepo

Sat, 19 Jan 2019 10:56:40 +0000

Update more file headers across all of the LLVM projects in the monorepoto reflect the new license. These used slightly different spellings thatdefeated my regular expressions.We understand that people may be surprised that we're moving the headerentirely to discuss the new license. We checked this carefully with theFoundation's lawyer and we believe this is the correct approach.Essentially, all code in the project is now made available by the LLVMproject under our new license, so you will see that the license headersinclude that license only. Some of our contributors have contributedcode under our old license, and accordingly, we have retained a copy ofour old license notice in the top-level files in each project andrepository.llvm-svn: 351648 List of files: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp

f2e24f56 - [libcxx] [test] Fix MSVC warning C4244 "conversion from 'X' to 'Y', possible loss of data", part 7/7.

Thu, 08 Dec 2016 21:38:57 +0000

[libcxx] [test] Fix MSVC warning C4244 "conversion from 'X' to 'Y', possible loss of data", part 7/7.test/std/input.output/iostream.format/input.streams/istream.unformatted/get.pass.cppAdd static_cast because basic_istream::get() returns int_type (N4606 27.7.2.3 [istream.unformatted]/4).test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minus1.pass.cppAdd static_cast because toupper() returns int (C11 7.4.2.2/1).test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/assign_t.pass.cppThis test is intentionally writing doubles to ostream_iterator.It's silencing -Wliteral-conversion for Clang, so I'm adding C4244 silencing for MSVC.test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cppGiven `extern float zero;`, the expression `1./zero` has type double, which emits a truncation warningwhen being passed to test() taking float. The fix is to say `1.f/zero` which has type float.test/std/numerics/complex.number/cmplx.over/arg.pass.cpptest/std/numerics/complex.number/cmplx.over/norm.pass.cppThese tests were constructing std::complex(x, 0), emitting truncation warnings when x is long long.Saying static_cast(x) avoids this.test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_result_type.pass.cppThis was using `int s` to construct and seed a linear_congruential_engine, where T isunsigned short/unsigned int/unsigned long/unsigned long long. That emits a truncation warning in theunsigned short case. Because the range [0, 20) is tiny and we aren't doing anything else with the index,we can just iterate with `T s`.test/std/re/re.traits/value.pass.cppregex_traits::value()'s first parameter is wchar_t (N4606 28.7 [re.traits]/13). This loop isusing int to iterate through ['g', 0xFFFF), emitting a truncation warning from int to wchar_t(which is 16-bit for some of us). Because the bound is exclusive, we can just iterate with wchar_t.test/std/strings/basic.string/string.cons/size_char_alloc.pass.cppThis test is a little strange. It's trying to verify that basic_string's (InIt, InIt) range constructorisn't confused by "N copies of C" when N and C have the same integral type. To do this, it wastesting (100, 65), but that eventually emits truncation warnings from int to char. There's a simple wayto avoid this - passing (static_cast(100), static_cast(65)) also exercises the disambiguation.(And 100 is representable even when char has a signed range.)test/std/strings/string.view/string.view.hash/string_view.pass.cppAdd static_cast because `'0' + i` has type int.test/std/utilities/function.objects/bind/func.bind/func.bind.bind/nested.pass.cppWhat's more horrible than nested bind()? pow() overloads! This operator()(T a, T b) was assuming thatstd::pow(a, b) can be returned as T. (In this case, T is int.) However, N4606 26.9.1 [cmath.syn]/2says that pow(int, int) returns double, so this was truncating double to int.Adding static_cast silences this.test/std/utilities/function.objects/unord.hash/integral.pass.cppThis was iterating `for (int i = 0; i <= 5; ++i)` and constructing `T t(i);` but that's truncatingwhen T is short. (And super truncating when T is bool.) Adding static_cast silences this.test/std/utilities/utility/exchange/exchange.pass.cppFirst, this was exchanging 67.2 into an int, but that's inherently truncating.Changing this to static_cast(67) avoids the truncation while preserving the"what if T and U are different" test coverage.Second, this was exchanging {} with the explicit type float into an int, and that's alsoinherently truncating. Specifying short is just as good.test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cppAdd static_cast. Note that this affects template argument deduction for make_pair(),better fulfilling the test's intent. For example, this was saying`typedef std::pair P1; P1 p1 = std::make_pair(3, 4);` but that was askingmake_pair() to return pair, which was then being converted to pair.(pair's converting constructors are tested elsewhere.)Now, std::make_pair(3, static_cast(4)) actually returns pair.(There's still a conversion from pair to pair, short>.)Fixes D27544.llvm-svn: 289111 List of files: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp

5a83710e - Move test into test/std subdirectory.

Sat, 20 Dec 2014 01:40:03 +0000

Move test into test/std subdirectory.llvm-svn: 224658 List of files: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp