https://bugs.llvm.org/show_bug.cgi?id=39599
Bug ID: 39599
Summary: -Wdeprecated is not implied by -Wall -Wextra
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: romain.geiss...@amadeus.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
Hi,
People usually use -Wall -Wextra to try to build their code base with strict
standards, while keeping only the warnings that are relevant (ie unlike
-Weverything which is only useful for clang developers). With gcc 9, the new
deprecation warning -Wdeprecated-copy (which clang's -Wdeprecated enables) is
enabled -by -Wall (source https://www.gnu.org/software/gcc/gcc-9/changes.html).
I expect that other gcc's warning about deprecation are enabled by either -Wall
or -Wextra.
Do you think it would make sense to enable -Wdeprecated and all -Wdeprecated-*
flags with -Wall/-Wextra ?
Example of code that builds fine with -Wall -Wextra -Werror, but not if you add
-Wdeprecated:
class A
{
public:
~A();
};
void g(const A&);
void f(const A& a)
{
A b = a;
g(b);
}
Cheers,
Romain
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