https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82269
Bug ID: 82269
Summary: -Wignored-qualifiers should not trigger on templated
code
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sgunderson at bigfoot dot com
Target Milestone: ---
Hi,
When compiling MySQL with GCC 8.0.0 20170917, I get
In file included from ../include/my_byteorder.h:53:0,
from ../include/m_ctype.h:29,
from ../sql/parse_tree_helpers.h:24,
from ../unittest/gunit/opt_ref-t.cc:23:
../include/template_utils.h: In instantiation of 'T pointer_cast(void*) [with T
= unsigned char* const]':
../sql/sql_optimizer.cc:9973:60: required from here
../include/template_utils.h:70:10: warning: type qualifiers ignored on cast
result type [-Wignored-qualifiers]
return static_cast<T>(p);
^~~~~~~~~~~~~~~~~
I think this is a bit too aggressive. The function in question reads
template<typename T>
inline T pointer_cast(void *p)
{
return static_cast<T>(p);
}
Sure, it's possible to put std::remove_cv_t around the type, but should it
really be needed?
