Various version of gcc, when compiling with -Og, complain:
xg_dom_arm.c: In function 'meminit':
xg_dom_arm.c:420:19: error: 'p2m_size' may be used uninitialized in this
function [-Werror=maybe-uninitialized]
420 | dom->p2m_size = p2m_size;
| ~~~~~~~~~~~~~~^~~~~~~~~~
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Ian Jackson <i...@xenproject.org>
CC: Wei Liu <w...@xen.org>
CC: Stefano Stabellini <sstabell...@kernel.org>
CC: Julien Grall <jul...@xen.org>
Julien/Stefano: I can't work out how this variable is supposed to work, and
the fact that it isn't a straight accumulation across the RAM banks looks
suspect.
---
tools/libs/guest/xg_dom_arm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/libs/guest/xg_dom_arm.c b/tools/libs/guest/xg_dom_arm.c
index 94948d2b20..f1b8d06f75 100644
--- a/tools/libs/guest/xg_dom_arm.c
+++ b/tools/libs/guest/xg_dom_arm.c
@@ -373,7 +373,7 @@ static int meminit(struct xc_dom_image *dom)
const uint64_t modsize = dtb_size + ramdisk_size;
const uint64_t ram128mb = bankbase[0] + (128<<20);
- xen_pfn_t p2m_size;
+ xen_pfn_t p2m_size = 0;
uint64_t bank0end;
assert(dom->rambase_pfn << XC_PAGE_SHIFT == bankbase[0]);
--
2.11.0
