[binutils-gdb] Allow an IR object with unknown architecture

[H.J.Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b986869b6605e45044626c5b3111390ac4e70b82

commit b986869b6605e45044626c5b3111390ac4e70b82
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Aug 31 19:56:25 2018 -0700

    Allow an IR object with unknown architecture
    
    An IR object may have an unknown architecture.  But it is compatible
    with other architecture.
    
    	PR ld/23600
    	* archures.c (bfd_arch_get_compatible): Allow an IR object with
    	unknown architecture.

Diff:
---
 bfd/ChangeLog  | 6 ++++++
 bfd/archures.c | 7 ++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index fcbfa96..792df8a 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+018-08-31  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/23600
+	* archures.c (bfd_arch_get_compatible): Allow an IR object with
+	unknown architecture.
+
 2018-08-31  Alan Modra  <amodra@gmail.com>
 
 	* elf64-ppc.c (num_relocs_for_offset): New function.
diff --git a/bfd/archures.c b/bfd/archures.c
index 300e17e..82b6741 100644
--- a/bfd/archures.c
+++ b/bfd/archures.c
@@ -896,12 +896,13 @@ bfd_arch_get_compatible (const bfd *abfd,
     /* Otherwise architecture-specific code has to decide.  */
     return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
 
-  /* We can allow an unknown architecture if accept_unknowns
-     is true, or if the target is the "binary" format, which
-     has an unknown architecture.  Since the binary format can
+  /* We can allow an unknown architecture if accept_unknowns is true,
+     if UBFD is an IR object, or if the target is the "binary" format,
+     which has an unknown architecture.  Since the binary format can
      only be set by explicit request from the user, it is safe
      to assume that they know what they are doing.  */
   if (accept_unknowns
+      || ubfd->plugin_format == bfd_plugin_yes
       || strcmp (bfd_get_target (ubfd), "binary") == 0)
     return kbfd->arch_info;
   return NULL;