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Kernel and Embedded Linux
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// RUN: %clang_cc1 -emit-llvm -o - -triple i386-apple-darwin %s | FileCheck %s // PR9571 struct t { int x; }; extern struct t *cfun; int f(void) { if (!(cfun + 0)) // CHECK: icmp ne %struct.t* return 0; return cfun->x; }