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59 lines
1.2 KiB
59 lines
1.2 KiB
/*
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* Try different format string lengths.
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*/
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/*===
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*** test_basic (duk_safe_call)
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length sum: 2147713027.000000
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==> rc=0, result='undefined'
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===*/
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static char buf[65536 + 1024];
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static double len_sum = 0.0;
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static void test_2(duk_context *ctx, int fmt_len, va_list ap) {
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int i;
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for (i = 0; i < fmt_len; i++) {
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buf[i] = 'x';
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}
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buf[fmt_len + 0] = '%';
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buf[fmt_len + 1] = 'd';
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buf[fmt_len + 2] = '\0';
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duk_push_vsprintf(ctx, buf, ap);
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len_sum += (double) duk_get_length(ctx, -1); /* trivial "checksum" */
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duk_pop(ctx);
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}
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static void test_1(duk_context *ctx, int fmt_len, ...) {
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va_list ap;
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va_start(ap, fmt_len);
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test_2(ctx, fmt_len, ap);
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va_end(ap);
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}
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static duk_ret_t test_basic(duk_context *ctx) {
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duk_size_t fmt_len;
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/* Note: don't reuse 'ap' in multiple calls, so the fmt_len loop
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* is here.
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*/
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for (fmt_len = 0; fmt_len <= 65536; fmt_len++) {
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test_1(ctx, fmt_len, 123, 234, 345);
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}
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/* Length sequence is 3, 4, ..., 65539 ->
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* (65539 + 3)/2 * (65539 - 3 + 1) = 2147713027
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*
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* (See test-push-sprintf.c for comments.)
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*/
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printf("length sum: %lf\n", len_sum);
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return 0;
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}
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void test(duk_context *ctx) {
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TEST_SAFE_CALL(test_basic);
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}
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