commit 274f7874db2587b1d5c7fb1513bfcb34cdc5d1fe
author David Brown <david.brown@linaro.org> Tue Mar 21 16:12:53 2017 -0600
committer David Brown <david.brown@linaro.org> Wed Mar 29 13:01:13 2017 -0600
tree 1d655fa678f8a1f7a97928a3252c784a4d5ddc90
parent 07fb8fa0c81681f9a2de03ea4ba905fedcd7538f

sim: Show address for overwrite error

When trying to write to the flash to a non-FF location, put the
location of the failure in the error message to help diagnose the
problem.

sim/src/flash.rs

diff --git a/sim/src/flash.rs b/sim/src/flash.rs
index 83ef771..797a044 100644
--- a/sim/src/flash.rs
+++ b/sim/src/flash.rs
@@ -95,7 +95,7 @@
 
         let mut sub = &mut self.data[offset .. offset + payload.len()];
         if sub.iter().any(|x| *x != 0xFF) {
-            bail!(ewrite("Write to non-FF location"));
+            bail!(ewrite(format!("Write to non-FF location: offset: {:x}", offset)));
         }
 
         sub.copy_from_slice(payload);