Imported Upstream version 0.160

[platform/upstream/elfutils.git] / libdw / cfi.c

diff --git a/libdw/cfi.c b/libdw/cfi.c
index f59f17d..a146f12 100644 (file)
--- a/libdw/cfi.c
+++ b/libdw/cfi.c
@@ -35,6 +35,7 @@
 #include "cfi.h"
 #include "memory-access.h"
 #include "encoded-value.h"
+#include "system.h"
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
@@ -89,6 +90,9 @@ execute_cfi (Dwarf_CFI *cache,
            }
          else
            {
+             eu_static_assert (reg_unspecified == 0);
+             memset (bigger->regs + bigger->nregs, 0,
+                     (reg + 1 - bigger->nregs) * sizeof bigger->regs[0]);
              bigger->nregs = reg + 1;
              fs = bigger;
            }
@@ -248,6 +252,8 @@ execute_cfi (Dwarf_CFI *cache,
          continue;
 
        case DW_CFA_expression:
+         /* Expression rule relies on section data, abi_cfi cannot use it.  */
+         assert (! abi_cfi);
          get_uleb128 (regno, program);
          offset = program - (const uint8_t *) cache->data->d.d_buf;
          /* DW_FORM_block is a ULEB128 length followed by that many bytes.  */
@@ -258,6 +264,8 @@ execute_cfi (Dwarf_CFI *cache,
          continue;
 
        case DW_CFA_val_expression:
+         /* Expression rule relies on section data, abi_cfi cannot use it.  */
+         assert (! abi_cfi);
          get_uleb128 (regno, program);
          /* DW_FORM_block is a ULEB128 length followed by that many bytes.  */
          offset = program - (const uint8_t *) cache->data->d.d_buf;