YouCompleteMe/cpp/llvm/tools/clang/test/CodeGen/PR3589-freestanding-libcalls.c

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// RUN: %clang_cc1 -emit-llvm %s -o - | grep 'declare i32 @printf' | count 1
// RUN: %clang_cc1 -O2 -emit-llvm %s -o - | grep 'declare i32 @puts' | count 1
// RUN: %clang_cc1 -ffreestanding -O2 -emit-llvm %s -o - | grep 'declare i32 @puts' | count 0
int printf(const char *, ...);
void f0() {
printf("hello\n");
}