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