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t-runner: Check for errors after opening file
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@ -524,6 +524,9 @@ static pid_t execute_program(char *argv[], char *envp[], bool wait,
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S_IRUSR | S_IWUSR);
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}
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if (fd == -1)
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exit(EXIT_FAILURE);
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dup2(fd, 1);
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dup2(fd, 2);
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