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47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* -*- mode: C; c-basic-offset: 4 -*- */
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#ident "Copyright (c) 2007, 2008 Tokutek Inc. All rights reserved."
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#include <test.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <toku_portability.h>
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#include <toku_assert.h>
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#include <toku_os.h>
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static void
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check_snprintf(int i) {
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char buf_before[8];
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char target[5];
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char buf_after[8];
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memset(target, 0xFF, sizeof(target));
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memset(buf_before, 0xFF, sizeof(buf_before));
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memset(buf_after, 0xFF, sizeof(buf_after));
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int64_t n = 1;
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int j;
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for (j = 0; j < i; j++) n *= 10;
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int bytes = snprintf(target, sizeof target, "%"PRId64, n);
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assert(bytes==i+1 ||
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(i+1>=(int)(sizeof target) && bytes>=(int)(sizeof target)));
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if (bytes>=(int)(sizeof target)) {
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//Overflow prevented by snprintf
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assert(target[sizeof target - 1] == '\0');
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assert(strlen(target)==sizeof target-1);
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}
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else {
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assert(target[bytes] == '\0');
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assert(strlen(target)==(size_t)bytes);
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}
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}
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int test_main(int argc __attribute__((__unused__)), char *const argv[] __attribute__((__unused__))) {
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int i;
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for (i = 0; i < 8; i++) {
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check_snprintf(i);
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}
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return 0;
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}
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