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33 lines
751 B
33 lines
751 B
/* Sample program for configure to test Large File support on target
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platforms.
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*/
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#define _LARGEFILE_SOURCE
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#define _LARGE_FILES
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#define _FILE_OFFSET_BITS 64
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <stdio.h>
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int main( int, char **argv )
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{
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// check that off_t can hold 2^63 - 1 and perform basic operations...
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#define OFF_T_64 (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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if (OFF_T_64 % 2147483647 != 1)
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return 1;
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// stat breaks on SCO OpenServer
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struct stat buf;
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stat( argv[0], &buf );
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if (!S_ISREG(buf.st_mode))
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return 2;
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FILE *file = fopen( argv[0], "r" );
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off_t offset = ftello( file );
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fseek( file, offset, SEEK_CUR );
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fclose( file );
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return 0;
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}
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