| From 4827e0db6c4f7dea7f4094f49d3bb48ef6dfdc2d Mon Sep 17 00:00:00 2001 |
| From: David Gibson <david@gibson.dropbear.id.au> |
| Date: Wed, 6 Jan 2021 14:52:26 +1100 |
| Subject: [PATCH] fdtdump: Fix gcc11 warning |
| |
| In one place, fdtdump abuses fdt_set_magic(), passing it just a small char |
| array instead of the full fdt header it expects. That's relying on the |
| fact that in fact fdt_set_magic() will only actually access the first 4 |
| bytes of the buffer. |
| |
| This trips a new warning in GCC 11 - and it's entirely possible it was |
| always UB. So, don't do that. |
| |
| Upstream-Status: Backport [https://git.kernel.org/pub/scm/utils/dtc/dtc.git/patch/?id=ca16a723fa9dde9c5da80dba567f48715000e77c] |
| Signed-off-by: David Gibson <david@gibson.dropbear.id.au> |
| --- |
| fdtdump.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/fdtdump.c b/fdtdump.c |
| index 9613bef..d9fb374 100644 |
| --- a/fdtdump.c |
| +++ b/fdtdump.c |
| @@ -217,7 +217,7 @@ int main(int argc, char *argv[]) |
| char *p = buf; |
| char *endp = buf + len; |
| |
| - fdt_set_magic(smagic, FDT_MAGIC); |
| + fdt32_st(smagic, FDT_MAGIC); |
| |
| /* poor man's memmem */ |
| while ((endp - p) >= FDT_MAGIC_SIZE) { |
| -- |
| 2.30.1 |
| |