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      1 // RUN: %clangxx_msan -m64 -O0 %s -o %t && %t %p 2>&1 | FileCheck %s
      2 // RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %t %p 2>&1 | FileCheck %s
      3 // RUN: %clangxx_msan -m64 -O3 %s -o %t && %t %p 2>&1 | FileCheck %s
      4 
      5 #include <assert.h>
      6 #include <glob.h>
      7 #include <stdio.h>
      8 #include <stdlib.h>
      9 #include <string.h>
     10 #include <errno.h>
     11 
     12 #include <sys/stat.h>
     13 #include <sys/types.h>
     14 #include <dirent.h>
     15 #include <unistd.h>
     16 
     17 #include <sanitizer/msan_interface.h>
     18 
     19 static void my_gl_closedir(void *dir) {
     20   if (!dir)
     21     exit(1);
     22   closedir((DIR *)dir);
     23 }
     24 
     25 static struct dirent *my_gl_readdir(void *dir) {
     26   if (!dir)
     27     exit(1);
     28   struct dirent *d = readdir((DIR *)dir);
     29   if (d) __msan_poison(d, d->d_reclen); // hehe
     30   return d;
     31 }
     32 
     33 static void *my_gl_opendir(const char *s) {
     34   assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
     35   return opendir(s);
     36 }
     37 
     38 static int my_gl_lstat(const char *s, struct stat *st) {
     39   assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
     40   if (!st)
     41     exit(1);
     42   return lstat(s, st);
     43 }
     44 
     45 static int my_gl_stat(const char *s, struct stat *st) {
     46   assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
     47   if (!st)
     48     exit(1);
     49   return lstat(s, st);
     50 }
     51 
     52 int main(int argc, char *argv[]) {
     53   assert(argc == 2);
     54   char buf[1024];
     55   snprintf(buf, sizeof(buf), "%s/%s", argv[1], "glob_test_root/*a");
     56 
     57   glob_t globbuf;
     58   globbuf.gl_closedir = my_gl_closedir;
     59   globbuf.gl_readdir = my_gl_readdir;
     60   globbuf.gl_opendir = my_gl_opendir;
     61   globbuf.gl_lstat = my_gl_lstat;
     62   globbuf.gl_stat = my_gl_stat;
     63   for (int i = 0; i < 10000; ++i) {
     64     int res = glob(buf, GLOB_ALTDIRFUNC | GLOB_MARK, 0, &globbuf);
     65     assert(res == 0);
     66     printf("%d %s\n", errno, strerror(errno));
     67     assert(globbuf.gl_pathc == 2);
     68     printf("%zu\n", strlen(globbuf.gl_pathv[0]));
     69     printf("%zu\n", strlen(globbuf.gl_pathv[1]));
     70     __msan_poison(globbuf.gl_pathv[0], strlen(globbuf.gl_pathv[0]) + 1);
     71     __msan_poison(globbuf.gl_pathv[1], strlen(globbuf.gl_pathv[1]) + 1);
     72     globfree(&globbuf);
     73   }
     74 
     75   printf("PASS\n");
     76   // CHECK: PASS
     77   return 0;
     78 }
     79