Robert Shearman : dbghelp: Don' t access a negative section index in elf_map_section.

[Alexandre Julliard]

Module: wine
Branch: refs/heads/master
Commit: f57ddeb9dbfbe6cafe7b21b35283b933596a9c7c
URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=f57ddeb9dbfbe6cafe7b21b35283b933596a9c7c

Author: Robert Shearman <rob at codeweavers.com>
Date:   Mon Jul 17 12:11:15 2006 +0100

dbghelp: Don't access a negative section index in elf_map_section.

---

 dlls/dbghelp/elf_module.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/dbghelp/elf_module.c b/dlls/dbghelp/elf_module.c
index 11ddfb8..a509848 100644
--- a/dlls/dbghelp/elf_module.c
+++ b/dlls/dbghelp/elf_module.c
@@ -143,7 +143,7 @@ static const char* elf_map_section(struc
     unsigned pgsz = getpagesize();
     unsigned ofst, size;
 
-    if (sidx >= fmap->elfhdr.e_shnum ||
+    if (sidx < 0 || sidx >= fmap->elfhdr.e_shnum ||
         fmap->sect[sidx].shdr.sh_type == SHT_NOBITS)
         return NO_MAP;
     /* align required information on page size (we assume pagesize is a power of 2) */