The Independent JPEG Group's JPEG software v5b

1 files changed, 6 insertions, 1 deletions

diff --git a/example.c b/example.c
index cb8c64a..577f061 100644
--- a/example.c
+++ b/example.c
@@ -83,6 +83,8 @@ write_JPEG_file (char * filename, int quality)
    * (see the second half of this file for an example).  But here we just
    * take the easy way out and use the standard error handler, which will
    * print a message on stderr and call exit() if compression fails.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
    */
   struct jpeg_error_mgr jerr;
   /* More stuff */
@@ -281,7 +283,10 @@ read_JPEG_file (char * filename)
    * working space (which is allocated as needed by the JPEG library).
    */
   struct jpeg_decompress_struct cinfo;
-  /* We use our private extension JPEG error handler. */
+  /* We use our private extension JPEG error handler.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
+   */
   struct my_error_mgr jerr;
   /* More stuff */
   FILE * infile;		/* source file */