xref: /llvm-project/compiler-rt/test/BlocksRuntime/fail.c (revision 2946cd701067404b99c39fb29dc9c74bd7193eb3)
18c1441f8SAlexey Samsonov //
2*2946cd70SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3*2946cd70SChandler Carruth // See https://llvm.org/LICENSE.txt for license information.
4*2946cd70SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
58c1441f8SAlexey Samsonov 
68c1441f8SAlexey Samsonov /*
78c1441f8SAlexey Samsonov  *  fail.c
88c1441f8SAlexey Samsonov  *  testObjects
98c1441f8SAlexey Samsonov  *
108c1441f8SAlexey Samsonov  *  Created by Blaine Garst on 9/16/08.
118c1441f8SAlexey Samsonov  *
128c1441f8SAlexey Samsonov  */
138c1441f8SAlexey Samsonov #include <stdio.h>
148c1441f8SAlexey Samsonov #include <unistd.h>
158c1441f8SAlexey Samsonov #include <fcntl.h>
168c1441f8SAlexey Samsonov #include <string.h>
178c1441f8SAlexey Samsonov #include <stdlib.h>
188c1441f8SAlexey Samsonov #include <stdbool.h>
198c1441f8SAlexey Samsonov 
208c1441f8SAlexey Samsonov 
readfile(char * buffer,const char * from)218c1441f8SAlexey Samsonov bool readfile(char *buffer, const char *from) {
228c1441f8SAlexey Samsonov     int fd = open(from, 0);
238c1441f8SAlexey Samsonov     if (fd < 0) return false;
248c1441f8SAlexey Samsonov     int count = read(fd, buffer, 512);
258c1441f8SAlexey Samsonov     if (count < 0) return false;
268c1441f8SAlexey Samsonov     buffer[count] = 0; // zap newline
278c1441f8SAlexey Samsonov     return true;
288c1441f8SAlexey Samsonov }
298c1441f8SAlexey Samsonov 
308c1441f8SAlexey Samsonov // basic idea, take compiler args, run compiler, and verify that expected failure matches any existing one
318c1441f8SAlexey Samsonov 
main(int argc,char * argv[])328c1441f8SAlexey Samsonov int main(int argc, char *argv[]) {
338c1441f8SAlexey Samsonov     if (argc == 1) return 0;
348c1441f8SAlexey Samsonov     char *copy[argc+1];   // make a copy
358c1441f8SAlexey Samsonov     // find and strip off -e "errorfile"
368c1441f8SAlexey Samsonov     char *errorfile = NULL;
378c1441f8SAlexey Samsonov     int counter = 0, i = 0;
388c1441f8SAlexey Samsonov     for (i = 1; i < argc; ++i) {    // skip 0 arg which is "fail"
398c1441f8SAlexey Samsonov         if (!strncmp(argv[i], "-e", 2)) {
408c1441f8SAlexey Samsonov             errorfile = argv[++i];
418c1441f8SAlexey Samsonov         }
428c1441f8SAlexey Samsonov         else {
438c1441f8SAlexey Samsonov             copy[counter++] = argv[i];
448c1441f8SAlexey Samsonov         }
458c1441f8SAlexey Samsonov     }
468c1441f8SAlexey Samsonov     copy[counter] = NULL;
478c1441f8SAlexey Samsonov     pid_t child = fork();
488c1441f8SAlexey Samsonov     char buffer[512];
498c1441f8SAlexey Samsonov     if (child == 0) {
508c1441f8SAlexey Samsonov         // in child
518c1441f8SAlexey Samsonov         sprintf(buffer, "/tmp/errorfile_%d", getpid());
528c1441f8SAlexey Samsonov         close(1);
538c1441f8SAlexey Samsonov         int fd = creat(buffer, 0777);
548c1441f8SAlexey Samsonov         if (fd != 1) {
558c1441f8SAlexey Samsonov             fprintf(stderr, "didn't open custom error file %s as 1, got %d\n", buffer, fd);
568c1441f8SAlexey Samsonov             exit(1);
578c1441f8SAlexey Samsonov         }
588c1441f8SAlexey Samsonov         close(2);
598c1441f8SAlexey Samsonov         dup(1);
608c1441f8SAlexey Samsonov         int result = execv(copy[0], copy);
618c1441f8SAlexey Samsonov         exit(10);
628c1441f8SAlexey Samsonov     }
638c1441f8SAlexey Samsonov     if (child < 0) {
648c1441f8SAlexey Samsonov         printf("fork failed\n");
658c1441f8SAlexey Samsonov         exit(1);
668c1441f8SAlexey Samsonov     }
678c1441f8SAlexey Samsonov     int status = 0;
688c1441f8SAlexey Samsonov     pid_t deadchild = wait(&status);
698c1441f8SAlexey Samsonov     if (deadchild != child) {
708c1441f8SAlexey Samsonov         printf("wait got %d instead of %d\n", deadchild, child);
718c1441f8SAlexey Samsonov         exit(1);
728c1441f8SAlexey Samsonov     }
738c1441f8SAlexey Samsonov     if (WEXITSTATUS(status) == 0) {
748c1441f8SAlexey Samsonov         printf("compiler exited normally, not good under these circumstances\n");
758c1441f8SAlexey Samsonov         exit(1);
768c1441f8SAlexey Samsonov     }
778c1441f8SAlexey Samsonov     //printf("exit status of child %d was %d\n", child, WEXITSTATUS(status));
788c1441f8SAlexey Samsonov     sprintf(buffer, "/tmp/errorfile_%d", child);
798c1441f8SAlexey Samsonov     if (errorfile) {
808c1441f8SAlexey Samsonov         //printf("ignoring error file: %s\n", errorfile);
818c1441f8SAlexey Samsonov         char desired[512];
828c1441f8SAlexey Samsonov         char got[512];
838c1441f8SAlexey Samsonov         bool gotErrorFile = readfile(desired, errorfile);
848c1441f8SAlexey Samsonov         bool gotOutput = readfile(got, buffer);
858c1441f8SAlexey Samsonov         if (!gotErrorFile && gotOutput) {
868c1441f8SAlexey Samsonov             printf("didn't read errorfile %s, it should have something from\n*****\n%s\n*****\nin it.\n",
878c1441f8SAlexey Samsonov                 errorfile, got);
888c1441f8SAlexey Samsonov             exit(1);
898c1441f8SAlexey Samsonov         }
908c1441f8SAlexey Samsonov         else if (gotErrorFile && gotOutput) {
918c1441f8SAlexey Samsonov             char *where = strstr(got, desired);
928c1441f8SAlexey Samsonov             if (!where) {
938c1441f8SAlexey Samsonov                 printf("didn't find contents of %s in %s\n", errorfile, buffer);
948c1441f8SAlexey Samsonov                 exit(1);
958c1441f8SAlexey Samsonov             }
968c1441f8SAlexey Samsonov         }
978c1441f8SAlexey Samsonov         else {
988c1441f8SAlexey Samsonov             printf("errorfile %s and output %s inconsistent\n", errorfile, buffer);
998c1441f8SAlexey Samsonov             exit(1);
1008c1441f8SAlexey Samsonov         }
1018c1441f8SAlexey Samsonov     }
1028c1441f8SAlexey Samsonov     unlink(buffer);
1038c1441f8SAlexey Samsonov     printf("success\n");
1048c1441f8SAlexey Samsonov     exit(0);
1058c1441f8SAlexey Samsonov }
1068c1441f8SAlexey Samsonov 
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