https://bugs.llvm.org/show_bug.cgi?id=50310
Bug ID: 50310
Summary: Duplicate -Wunguarded-availability warnings on nested
classes when if(@available) is present
Product: clang
Version: trunk
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
The presence of an if(@available) check in a function body can cause duplicate
-Wunguarded-availability warnings to be produced on members of nested classes
in that same function body:
// clang -cc1 -xobjective-c++ -triple x86_64-apple-macosx10.9
-Wunguarded-availability -fblocks -fsyntax-only
typedef int __attribute__((availability(macos, introduced = 10.12))) new_int;
void foo() {
struct local {
new_int x; // two -Wunguarded-availability warnings produced on this
line
};
if (@available(macos 10.12, *)) {}
}
Removing the if(@available) check below the struct causes only one warning to
be produced, as expected.
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