Prevent underflow if address is zero

koute · Jul 12, 2019 · 4b24f8f · 4b24f8f
1 parent f655d03
commit 4b24f8f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cli-core/src/loader.rs b/cli-core/src/loader.rs
@@ -616,7 +616,7 @@ impl Loader {
         let mut interner = self.interner.get_mut();
 
         for &address in &addresses {
-            let address = address - 1;
+            let address = if address > 0 { address - 1 } else { 0 };
             if let Some( range ) = self.frames_by_address.get( &address ).cloned() {
                 for index in range {
                     let frame_id = backtrace_storage[ index ];