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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wunguarded-availability warns on lambdas and nested classes that are correctly guarded"
href="https://bugs.llvm.org/show_bug.cgi?id=50309">50309</a>
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<th>Summary</th>
<td>-Wunguarded-availability warns on lambdas and nested classes that are correctly guarded
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>Macintosh
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<th>OS</th>
<td>MacOS X
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Frontend
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>logan.r.smith0@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>The bodies of lambdas and nested class member functions aren't correctly
analyzed by -Wunguarded-availability even when they occur entirely inside an
appropriate @available check. Blocks work as expected.
The following code produces warnings on the marked lines, and suggests wrapping
the inner function calls in @available checks, even though they are already
inside one in the outer context:
// clang -cc1 -xobjective-c++ -triple x86_64-apple-macosx10.9
-Wunguarded-availability -fblocks -fsyntax-only
int func_10_12() __attribute__((availability(macos, introduced = 10.12)));
void foo() {
if (@available(macos 10.12, *)) {
(void)[] { func_10_12(); }; // warning here
struct X { void f() { func_10_12(); } }; // warning here
(void)^{ func_10_12(); }; // no warning here, as expected
}
}</pre>
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