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-rw-r--r--util/cbfstool/elfheaders.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/util/cbfstool/elfheaders.c b/util/cbfstool/elfheaders.c
index 8942eea03c..0462d0a6d6 100644
--- a/util/cbfstool/elfheaders.c
+++ b/util/cbfstool/elfheaders.c
@@ -808,10 +808,14 @@ struct elf_writer *elf_writer_init(const Elf64_Ehdr *ehdr)
/*
* Clean up any internal state represented by ew. Aftewards the elf_writer
* is invalid.
+ * It is safe to call elf_writer_destroy with ew as NULL. It returns without
+ * performing any action.
*/
void elf_writer_destroy(struct elf_writer *ew)
{
int i;
+ if (ew == NULL)
+ return;
if (ew->phdrs != NULL)
free(ew->phdrs);
free(ew->strtab.buffer);