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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wdeprecated is not implied by -Wall -Wextra"
href="https://bugs.llvm.org/show_bug.cgi?id=39599">39599</a>
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<th>Summary</th>
<td>-Wdeprecated is not implied by -Wall -Wextra
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>romain.geissler@amadeus.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>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 <a href="https://www.gnu.org/software/gcc/gcc-9/changes.html">https://www.gnu.org/software/gcc/gcc-9/changes.html</a>).
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</pre>
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