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| //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
/*
* fail.c
* testObjects
*
* Created by Blaine Garst on 9/16/08.
*
*/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
bool readfile(char *buffer, const char *from) {
int fd = open(from, 0);
if (fd < 0) return false;
int count = read(fd, buffer, 512);
if (count < 0) return false;
buffer[count] = 0; // zap newline
return true;
}
// basic idea, take compiler args, run compiler, and verify that expected failure matches any existing one
int main(int argc, char *argv[]) {
if (argc == 1) return 0;
char *copy[argc+1]; // make a copy
// find and strip off -e "errorfile"
char *errorfile = NULL;
int counter = 0, i = 0;
for (i = 1; i < argc; ++i) { // skip 0 arg which is "fail"
if (!strncmp(argv[i], "-e", 2)) {
errorfile = argv[++i];
}
else {
copy[counter++] = argv[i];
}
}
copy[counter] = NULL;
pid_t child = fork();
char buffer[512];
if (child == 0) {
// in child
sprintf(buffer, "/tmp/errorfile_%d", getpid());
close(1);
int fd = creat(buffer, 0777);
if (fd != 1) {
fprintf(stderr, "didn't open custom error file %s as 1, got %d\n", buffer, fd);
exit(1);
}
close(2);
dup(1);
int result = execv(copy[0], copy);
exit(10);
}
if (child < 0) {
printf("fork failed\n");
exit(1);
}
int status = 0;
pid_t deadchild = wait(&status);
if (deadchild != child) {
printf("wait got %d instead of %d\n", deadchild, child);
exit(1);
}
if (WEXITSTATUS(status) == 0) {
printf("compiler exited normally, not good under these circumstances\n");
exit(1);
}
//printf("exit status of child %d was %d\n", child, WEXITSTATUS(status));
sprintf(buffer, "/tmp/errorfile_%d", child);
if (errorfile) {
//printf("ignoring error file: %s\n", errorfile);
char desired[512];
char got[512];
bool gotErrorFile = readfile(desired, errorfile);
bool gotOutput = readfile(got, buffer);
if (!gotErrorFile && gotOutput) {
printf("didn't read errorfile %s, it should have something from\n*****\n%s\n*****\nin it.\n",
errorfile, got);
exit(1);
}
else if (gotErrorFile && gotOutput) {
char *where = strstr(got, desired);
if (!where) {
printf("didn't find contents of %s in %s\n", errorfile, buffer);
exit(1);
}
}
else {
printf("errorfile %s and output %s inconsistent\n", errorfile, buffer);
exit(1);
}
}
unlink(buffer);
printf("success\n");
exit(0);
}
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