zero undefined registers in eh unwind

2026-08-11 16:18:07 +00:00 · 2026-06-09 16:18:47 -07:00
parent ffb79a67ef
commit 5ddad36380
1 changed files with 4 additions and 1 deletions
@@ -570,8 +570,11 @@ eh_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info, U64
      switch(rule->code)
      {
        default:
-        case DW_UnwindRuleCode_Undefined:
        case DW_UnwindRuleCode_SameVal:{}break;
+        case DW_UnwindRuleCode_Undefined:
+        {
+          MemoryZero((U8 *)regs + reg_rng.min, reg_size);
+        }break;
        case DW_UnwindRuleCode_Off:
        {
          Temp temp = temp_begin(scratch.arena);