File: weak_byref_objects.m

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llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
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// RUN: %clang_cc1 -fblocks -triple i386-apple-darwin9 -fobjc-gc -rewrite-objc -fobjc-runtime=macosx-fragile-10.5  %s -o -

#define nil 0
int main() {
        __weak __block id foo = nil;
        __block id foo2 = nil;
        id foo3 = nil;

        void (^myblock)() = ^{
                foo = nil;
                foo2 = nil;
                [foo3 bar];
                id foo4 = foo3;
        };
}