70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
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/***************************************************************************************
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* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
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*
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* NEMU is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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*
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* See the Mulan PSL v2 for more details.
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***************************************************************************************/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <assert.h>
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#include <string.h>
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// this should be enough
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static char buf[65536] = {};
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static char code_buf[65536 + 128] = {}; // a little larger than `buf`
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static char *code_format =
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"#include <stdio.h>\n"
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"int main() { "
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" unsigned result = %s; "
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" printf(\"%%u\", result); "
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" return 0; "
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"}";
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static void gen_rand_expr() {
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buf[0] = '\0';
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}
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int main(int argc, char *argv[]) {
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int seed = time(0);
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srand(seed);
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int loop = 1;
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if (argc > 1) {
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sscanf(argv[1], "%d", &loop);
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}
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int i;
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for (i = 0; i < loop; i ++) {
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gen_rand_expr();
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sprintf(code_buf, code_format, buf);
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FILE *fp = fopen("/tmp/.code.c", "w");
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assert(fp != NULL);
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fputs(code_buf, fp);
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fclose(fp);
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int ret = system("gcc /tmp/.code.c -o /tmp/.expr");
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if (ret != 0) continue;
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fp = popen("/tmp/.expr", "r");
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assert(fp != NULL);
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int result;
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ret = fscanf(fp, "%d", &result);
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pclose(fp);
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printf("%u %s\n", result, buf);
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}
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return 0;
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}
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