* examples/io.c (read_file): Bug fix, used to overwrite pointer.

Rev: src/nettle/examples/io.c:1.2

diff --git a/examples/io.c b/examples/io.c
index 8ce412c072aae1e3df3b5eb1ba009e8fc13a28f7..5584c1102af43c315990aba33296f30e72d3219b 100644 (file)
--- a/examples/io.c
+++ b/examples/io.c
@@ -52,17 +52,18 @@ werror(const char *format, ...)
 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
 
 unsigned
-read_file(const char *name, unsigned max_size, char **buffer)
+read_file(const char *name, unsigned max_size, char **contents)
 {
   unsigned size;
   unsigned done;
+  char *buffer;
   FILE *f;
     
   f = fopen(name, "rb");
   if (!f)
     return 0;
 
-  *buffer = NULL;
+  buffer = NULL;
 
   if (max_size && max_size < 100)
     size = max_size;
@@ -75,22 +76,22 @@ read_file(const char *name, unsigned max_size, char **buffer)
     {
       char *p;
 
-      if (size > max_size)
+      if (max_size && size > max_size)
        size = max_size;
 
       /* Space for terminating NUL */
-      p = realloc(*buffer, size + 1);
+      p = realloc(buffer, size + 1);
 
       if (!p)
        {
        fail:
          fclose(f);
-         free(*buffer);
-         *buffer = NULL;
+         free(buffer);
+         *contents = NULL;
          return 0;
        }
 
-      *buffer = p;
+      buffer = p;
       done += fread(buffer + done, 1, size - done, f);
 
       if (ferror(f))
@@ -100,7 +101,9 @@ read_file(const char *name, unsigned max_size, char **buffer)
   fclose(f);
 
   /* NUL-terminate the data. */
-  (*buffer)[done] = '\0';
+  buffer[done] = '\0';
+  *contents = buffer;
+  
   return done;
 }