YouCompleteMe/cpp/llvm/tools/clang/test/CodeGen/2004-07-06-FunctionCast.c

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// RUN: %clang_cc1 -emit-llvm %s -o /dev/null
static int unused_func(void) {
return 1;
}
int foo(void) {
(void)unused_func; /* avoid compiler warning */
return 2;
}