Fix operation of reloc functions when relocation data are absent

diff --git a/src/dwarflint.c b/src/dwarflint.c
index 6952c90aa290939af93ecc1805cb0beef47469a2..87100fce945887ef97b489ecbd8426b2cbc0ba2e 100644 (file)
--- a/src/dwarflint.c
+++ b/src/dwarflint.c
@@ -2286,7 +2286,7 @@ relocation_next (struct relocation_data *reloc, uint64_t offset,
                 GElf_Rela *rela_mem, struct where *where,
                 enum skip_type st)
 {
-  if (reloc == NULL)
+  if (reloc == NULL || reloc->data == NULL)
     return NULL;
 
   while (reloc->index < reloc->count)
@@ -2336,6 +2336,9 @@ static void
 relocation_skip (struct relocation_data *reloc, uint64_t offset,
                 struct where *where, enum skip_type st)
 {
+  if (reloc == NULL || reloc->data == NULL)
+    return;
+
   GElf_Rela rela_mem;
   relocation_next (reloc, offset - 1, &rela_mem, where, st);
 }
@@ -2344,6 +2347,9 @@ relocation_skip (struct relocation_data *reloc, uint64_t offset,
 static void
 relocation_skip_rest (struct relocation_data *reloc, enum section_id sec)
 {
+  if (reloc == NULL || reloc->data == NULL)
+    return;
+
   GElf_Rela rela_mem;
   relocation_next (reloc, (uint64_t)-1, &rela_mem,
                   &WHERE (sec, NULL), skip_mismatched);