[rtems commit] libdl: Update comment with details about the error fix.

[Chris Johns]

Module:    rtems
Branch:    master
Commit:    580466cc9c7244d37352523009fda65108a666fd
Changeset: http://git.rtems.org/rtems/commit/?id=580466cc9c7244d37352523009fda65108a666fd

Author:    Chris Johns <chrisj at rtems.org>
Date:      Thu Nov 20 13:52:12 2014 +1100

libdl: Update comment with details about the error fix.

See refs #2192.

---

 cpukit/libdl/rtl-elf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cpukit/libdl/rtl-elf.c b/cpukit/libdl/rtl-elf.c
index 3a432aa..35201d5 100644
--- a/cpukit/libdl/rtl-elf.c
+++ b/cpukit/libdl/rtl-elf.c
@@ -639,6 +639,9 @@ rtems_rtl_elf_parse_sections (rtems_rtl_obj_t* obj, int fd, Elf_Ehdr* ehdr)
   {
     uint32_t flags;
 
+    /*
+     * Make sure section is at least 32bits to avoid 16-bit overflow errors.
+     */
     off = obj->ooffset + ehdr->e_shoff + (((uint32_t) section) * ehdr->e_shentsize);
 
     if (!rtems_rtl_obj_cache_read_byval (sects, fd, off, &shdr, sizeof (shdr)))