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Bug #1416 » d.c

corecode, 07/10/2009 08:51 AM

 
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#include <stdio.h>
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int
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main(void)
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{
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	FILE *f = fopen("duptmp", "w");
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	FILE *f1, *f2;
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	char line[100];
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	if (f == NULL)
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		return (1);
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	fputs("1\n2\n3\n", f);
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	fclose(f);
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	f1 = fopen("duptmp", "r");
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	if (f1 == NULL)
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		return (1);
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	f2 = fdopen(dup(fileno(f1)), "r");
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	if (f2 == NULL)
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		return (2);
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	fgets(line, sizeof(line), f1);
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	printf("read1: %s", line);
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	fgets(line, sizeof(line), f2);
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	printf("read2: %s", line);
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	return (0);
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}
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