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author | Eric Fiselier <eric@efcs.ca> | 2017-01-13 22:02:08 +0000 |
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committer | Eric Fiselier <eric@efcs.ca> | 2017-01-13 22:02:08 +0000 |
commit | ebaf7dab14c3bf1c4f995d9ad1199b6c2784a8ca (patch) | |
tree | f65c289da0bd7205d5042d29be1efd31a85b20d8 /test/libcxx/utilities/tuple | |
parent | ccb58d0a2c539a5cec75a30f09243fd3064939a6 (diff) | |
download | external_libcxx-ebaf7dab14c3bf1c4f995d9ad1199b6c2784a8ca.tar.gz external_libcxx-ebaf7dab14c3bf1c4f995d9ad1199b6c2784a8ca.tar.bz2 external_libcxx-ebaf7dab14c3bf1c4f995d9ad1199b6c2784a8ca.zip |
Add _LIBCPP_DIAGNOSE_WARNING and _LIBCPP_DIAGNOSE_ERROR macros.
Clang recently added a `diagnose_if(cond, msg, type)` attribute
which can be used to generate diagnostics when `cond` is a constant
expression that evaluates to true. Otherwise no attribute has no
effect.
This patch adds _LIBCPP_DIAGNOSE_ERROR/WARNING macros which
use this new attribute. Additionally this patch implements
a diagnostic message when a non-const-callable comparator is
given to a container.
Note: For now the warning version of the diagnostic is useless
within libc++ since warning diagnostics are suppressed by the
system header pragma. I'm going to work on fixing this.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291961 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/libcxx/utilities/tuple')
-rw-r--r-- | test/libcxx/utilities/tuple/tuple.tuple/diagnose_reference_binding.fail.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/test/libcxx/utilities/tuple/tuple.tuple/diagnose_reference_binding.fail.cpp b/test/libcxx/utilities/tuple/tuple.tuple/diagnose_reference_binding.fail.cpp index a35dfd696..c18822bbe 100644 --- a/test/libcxx/utilities/tuple/tuple.tuple/diagnose_reference_binding.fail.cpp +++ b/test/libcxx/utilities/tuple/tuple.tuple/diagnose_reference_binding.fail.cpp @@ -30,4 +30,11 @@ int main() { // bind rvalue to constructed non-rvalue std::tuple<std::string &&> t2("hello"); // expected-note {{requested here}} std::tuple<std::string &&> t3(std::allocator_arg, alloc, "hello"); // expected-note {{requested here}} + + // FIXME: The below warnings may get emitted as an error, a warning, or not emitted at all + // depending on the flags used to compile this test. + { + // expected-warning@tuple:* 0+ {{binding reference member 'value' to a temporary value}} + // expected-error@tuple:* 0+ {{binding reference member 'value' to a temporary value}} + } } |