Fix potential segfault
Alan Modra
amodra@gmail.com
Sat May 23 07:26:32 GMT 2020
Code in vms-lib.c leaves arch_header NULL.
* bfdio.c (bfd_get_file_size): Don't segfault on NULL arch_header.
diff --git a/bfd/bfdio.c b/bfd/bfdio.c
index 5ef3ec493e..5f144bc7f3 100644
--- a/bfd/bfdio.c
+++ b/bfd/bfdio.c
@@ -495,8 +495,9 @@ bfd_get_file_size (bfd *abfd)
struct areltdata *adata = (struct areltdata *) abfd->arelt_data;
archive_size = adata->parsed_size;
/* If the archive is compressed we can't compare against file size. */
- if (memcmp (((struct ar_hdr *) adata->arch_header)->ar_fmag,
- "Z\012", 2) == 0)
+ if (adata->arch_header != NULL
+ && memcmp (((struct ar_hdr *) adata->arch_header)->ar_fmag,
+ "Z\012", 2) == 0)
return archive_size;
abfd = abfd->my_archive;
}
--
Alan Modra
Australia Development Lab, IBM
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