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Use #include <unistd.h> for obtaining the prototype of write() #39

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Use #include <unistd.h> for obtaining the prototype of write() #39

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2 changes: 1 addition & 1 deletion getopt.c
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Expand Up @@ -43,9 +43,9 @@
#include <stdio.h>
/* We're ANSI now; we're guaranteed to have strchr(). */
#include <string.h>
#include <unistd.h>

#define ERR(s, c) if(x_opterr){\
extern int write(int, const void *, unsigned);\
char errbuf[2];\
errbuf[0] = c; errbuf[1] = '\n';\
(void) write(2, argv[0], (unsigned)strlen(argv[0]));\
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