[Xen-devel] [patch] fix void* arithmetic

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

Hi Ian, I needed the following patch to avoid lots of these warnings:
        elf.c:238: warning: pointer of type `void *' used in arithmetic

Fix void* arithmetic warnings.
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>

diff -r 030a041bbe90 xen/common/elf.c
--- a/xen/common/elf.c  Tue Aug 29 06:53:58 2006 -0400
+++ b/xen/common/elf.c  Tue Aug 29 15:22:26 2006 -0500
@@ -102,9 +102,9 @@ static unsigned long long xen_guest_nume
 /*
  * Interface to the Xen ELF notes.
  */
-#define ELFNOTE_NAME(_n_)   ((void*)(_n_) + sizeof(*(_n_)))
-#define ELFNOTE_DESC(_n_)   (ELFNOTE_NAME(_n_) + (((_n_)->namesz+3)&~3))
-#define ELFNOTE_NEXT(_n_)   (ELFNOTE_DESC(_n_) + (((_n_)->descsz+3)&~3))
+#define ELFNOTE_NAME(_n_)   ((void*)((char*)(_n_) + sizeof(*(_n_))))
+#define ELFNOTE_DESC(_n_)   (((void*)((char*)ELFNOTE_NAME(_n_) + 
(((_n_)->namesz+3)&~3))))
+#define ELFNOTE_NEXT(_n_)   (((void*)((char*)ELFNOTE_DESC(_n_) + 
(((_n_)->descsz+3)&~3))))

 static int is_xen_elfnote_section(const char *image, Elf_Shdr *shdr)
 {
@@ -235,9 +235,9 @@ int parseelfimage(struct domain_setup_in
         shdr = (Elf_Shdr *)(image + ehdr->e_shoff + (h*ehdr->e_shentsize));
         if ( !is_xen_elfnote_section(image, shdr) )
             continue;
-        dsi->__elfnote_section = (void *)image + shdr->sh_offset;
+        dsi->__elfnote_section = (char *)image + shdr->sh_offset;
         dsi->__elfnote_section_end =
-            (void *)image + shdr->sh_offset + shdr->sh_size;
+            (char *)image + shdr->sh_offset + shdr->sh_size;
         break;
     }



-- 
Hollis Blanchard
IBM Linux Technology Center


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