| Message ID | 20200224180956.402391-1-polacek@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | c++: Add test for DR 1423, Convertibility of nullptr to bool. | expand |
On 2/24/20 1:09 PM, Marek Polacek wrote: > DR 1423, which supersedes DR 654, says that you can't copy-init > a bool from a std::nullptr_t: > > bool b = nullptr; // error > > Conversely, it works with direct-initialization which is more > permissive than copy-initialization. > > No code changes necessary since we handle it right. > > Tested on x86_64-linux, ok for trunk? OK. > 2020-02-24 Marek Polacek <polacek@redhat.com> > > DR 1423, Convertibility of nullptr to bool. > * g++.dg/DRs/dr1423.C: New test. > --- > gcc/testsuite/g++.dg/DRs/dr1423.C | 7 +++++++ > 1 file changed, 7 insertions(+) > create mode 100644 gcc/testsuite/g++.dg/DRs/dr1423.C > > diff --git a/gcc/testsuite/g++.dg/DRs/dr1423.C b/gcc/testsuite/g++.dg/DRs/dr1423.C > new file mode 100644 > index 00000000000..d82baae9985 > --- /dev/null > +++ b/gcc/testsuite/g++.dg/DRs/dr1423.C > @@ -0,0 +1,7 @@ > +// DR 1423 - Convertibility of nullptr to bool. > +// { dg-do compile { target c++11 } } > + > +bool b = nullptr; // { dg-error "converting to .bool. from .std::nullptr_t. requires direct-initialization" } > +bool b2(nullptr); > +bool b3{nullptr}; > +bool b4 = { nullptr }; // { dg-error "converting to .bool. from .std::nullptr_t. requires direct-initialization" } > > base-commit: a4dbb9b25a60143c699de55cd6226cebeb3b3c3e >
diff --git a/gcc/testsuite/g++.dg/DRs/dr1423.C b/gcc/testsuite/g++.dg/DRs/dr1423.C new file mode 100644 index 00000000000..d82baae9985 --- /dev/null +++ b/gcc/testsuite/g++.dg/DRs/dr1423.C @@ -0,0 +1,7 @@ +// DR 1423 - Convertibility of nullptr to bool. +// { dg-do compile { target c++11 } } + +bool b = nullptr; // { dg-error "converting to .bool. from .std::nullptr_t. requires direct-initialization" } +bool b2(nullptr); +bool b3{nullptr}; +bool b4 = { nullptr }; // { dg-error "converting to .bool. from .std::nullptr_t. requires direct-initialization" }