llvm-project

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// RUN: %clang_tsan -O2 %s -o %t
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// RUN: %env_tsan_opts=check_printf=1 %run %t 2>&1 | FileCheck %s
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// RUN: %env_tsan_opts=check_printf=0 %run %t 2>&1 | FileCheck %s
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// RUN: %run %t 2>&1 | FileCheck %s
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#include <stdio.h>
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int main() {
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  volatile char c = '0';
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  volatile int x = 12;
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  volatile float f = 1.239;
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  volatile char s[] = "34";
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  printf("%c %d %.3f %s\n", c, x, f, s);
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  return 0;
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  // Check that printf works fine under Tsan.
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  // CHECK: 0 12 1.239 34
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}
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