Fix stdin-read variable

Author: sava-cska

runtime/POSIX/fd_init.c

@@ -48,39 +48,44 @@ exe_sym_env_t __exe_env = {
 };
 
 static void __create_new_dfile(exe_disk_file_t *dfile, unsigned size, 
-                               const char *name, struct stat64 *defaults) {
+                               const char *name, struct stat64 *defaults, unsigned standart_io) {
   struct stat64 *s = malloc(sizeof(*s));
   if (!s)
     klee_report_error(__FILE__, __LINE__, "out of memory in klee_init_env", "user.err");
 
   const char *sp;
   char sname[64];
-  char read_bytes_name[64];
-  char write_bytes_name[64];
   for (sp=name; *sp; ++sp){
     sname[sp-name] = *sp;
-    read_bytes_name[sp - name] = *sp;
-    write_bytes_name[sp - name] = *sp;
   }
   memcpy(&sname[sp-name], "-stat", 6);
-  memcpy(&read_bytes_name[sp - name], "-read", 6);
-  memcpy(&write_bytes_name[sp - name], "-write", 7);
 
   assert(size);
 
   dfile->size = size;
   dfile->contents = malloc(dfile->size);
 
-  unsigned *ptr_read = malloc(sizeof(unsigned));
-  unsigned *ptr_write = malloc(sizeof(unsigned));
-  klee_make_symbolic(ptr_read, sizeof(unsigned), read_bytes_name);
-  klee_make_symbolic(ptr_write, sizeof(unsigned), write_bytes_name);
-  memcpy(&dfile->read_bytes_symbolic, ptr_read, sizeof(unsigned));
-  memcpy(&dfile->write_bytes_symbolic, ptr_write, sizeof(unsigned));
-  free(ptr_read);
-  free(ptr_write);
-  dfile->read_bytes_real = 0;
-  dfile->write_bytes_real = 0;
+  if (!standart_io) {
+    char read_bytes_name[64];
+    char write_bytes_name[64];
+    for (const char *sp = name; *sp; ++sp) {
+      read_bytes_name[sp - name] = *sp;
+      write_bytes_name[sp - name] = *sp;
+    }
+    memcpy(&read_bytes_name[sp - name], "-read", 6);
+    memcpy(&write_bytes_name[sp - name], "-write", 7);
+
+    unsigned *ptr_read = malloc(sizeof(unsigned));
+    unsigned *ptr_write = malloc(sizeof(unsigned));
+    klee_make_symbolic(ptr_read, sizeof(unsigned), read_bytes_name);
+    klee_make_symbolic(ptr_write, sizeof(unsigned), write_bytes_name);
+    memcpy(&dfile->read_bytes_symbolic, ptr_read, sizeof(unsigned));
+    memcpy(&dfile->write_bytes_symbolic, ptr_write, sizeof(unsigned));
+    free(ptr_read);
+    free(ptr_write);
+    dfile->read_bytes_real = 0;
+    dfile->write_bytes_real = 0;
+  }
 
   if (!dfile->contents)
     klee_report_error(__FILE__, __LINE__, "out of memory in klee_init_env", "user.err");
@@ -151,15 +156,15 @@ void klee_init_fds(unsigned n_files, unsigned file_length,
 
   for (k=0; k < n_files; k++) {
     name[0] = 'A' + k;
-    __create_new_dfile(&__exe_fs.sym_files[k], file_length, name, &s);
+    __create_new_dfile(&__exe_fs.sym_files[k], file_length, name, &s, 0);
   }
 
   /* setting symbolic stdin */
   if (stdin_length) {
     __exe_fs.sym_stdin = malloc(sizeof(*__exe_fs.sym_stdin));
     if (!__exe_fs.sym_stdin)
       klee_report_error(__FILE__, __LINE__, "out of memory in klee_init_env", "user.err");
-    __create_new_dfile(__exe_fs.sym_stdin, stdin_length, "stdin", &s);
+    __create_new_dfile(__exe_fs.sym_stdin, stdin_length, "stdin", &s, 1);
     unsigned int i;
     for (i = 0; i < stdin_length; i++) {
       klee_prefer_cex(__exe_fs.sym_stdin, 32 <= __exe_fs.sym_stdin->contents[i] & __exe_fs.sym_stdin->contents[i] <= 126);
@@ -196,7 +201,7 @@ void klee_init_fds(unsigned n_files, unsigned file_length,
     __exe_fs.sym_stdout = malloc(sizeof(*__exe_fs.sym_stdout));
     if (!__exe_fs.sym_stdout)
       klee_report_error(__FILE__, __LINE__, "out of memory in klee_init_env", "user.err");
-    __create_new_dfile(__exe_fs.sym_stdout, 1024, "stdout", &s);
+    __create_new_dfile(__exe_fs.sym_stdout, 1024, "stdout", &s, 1);
     __exe_env.fds[1].dfile = __exe_fs.sym_stdout;
     __exe_fs.stdout_writes = 0;
   }