Stop corruption of ihex output shen addresses are sign extended.

	PR 23699
	* ihex.c (ihex_write_object_contents): Check for sign extended
	addresses that cannot be supported in the ihex format.

1 files changed, 18 insertions, 0 deletions

diff --git a/bfd/ihex.c b/bfd/ihex.c
index 80bcbe9..b576ac7 100644
--- a/bfd/ihex.c
+++ b/bfd/ihex.c
@@ -775,8 +775,26 @@ ihex_write_object_contents (bfd *abfd)
       bfd_vma where;
       bfd_byte *p;
       bfd_size_type count;
+      const bfd_vma sign = (bfd_vma) 0xffffffff80000000ULL;
+      const bfd_vma top = (bfd_vma) 0xffffffff00000000ULL;
 
       where = l->where;
+
+      /* Check for unacceptable addresses sign extension.
+	 See PR 23699 for more details.  */
+      if ((where & sign) == top
+	  || ((where & top) != 0 && (where & top) != top))
+       {
+         _bfd_error_handler
+           /* xgettext:c-format */
+           (_("%pB 64-bit address %#" PRIx64 " out of range for Intel Hex file"),
+            abfd, (uint64_t) where);
+         bfd_set_error (bfd_error_bad_value);
+         return FALSE;
+       }
+
+      where &= 0xffffffff;
+
       p = l->data;
       count = l->size;