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16 lines
302 B
C
16 lines
302 B
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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int vasprintf(char **s, const char *fmt, va_list ap)
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{
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va_list ap2;
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va_copy(ap2, ap);
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int l = vsnprintf(0, 0, fmt, ap2);
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va_end(ap2);
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if (l<0 || !(*s=malloc(l+1U))) return -1;
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return vsnprintf(*s, l+1U, fmt, ap);
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}
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