configfile: Avoid memory leaks in case of realloc failure (cppcheck w…

…arning) The original patch was written by Bob Relyea for RHEL package, but I tweaked it a bit to make sure it builds without warnings. Signed-off-by: Jakub Jelen <[email protected]>
LudovicRousseau · May 30, 2019 · f759792 · f759792
1 parent 4369771
commit f759792
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/src/configfile.l b/src/configfile.l
@@ -216,9 +216,18 @@ int evaluatetoken(char *pcToken)
  }
  else
  {
+ SerialReader *new_reader_list = NULL;
  reader_list_size++;
- reader_list = realloc(reader_list, reader_list_size *
+ new_reader_list = realloc(reader_list, reader_list_size *
  sizeof(SerialReader));
+ if (new_reader_list == NULL)
+ free(reader_list);
+ reader_list = new_reader_list;
+ }
+ if (reader_list == NULL)
+ {
+ tok_error("No Memory");
+ return 1;
  }
 
  /* end marker */