[binutils-gdb] asan: uninitialised write in bfd_mach_o_write_contents

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=21aacea42ecaa7aca9b686e8de0f79a1f4e7d668

commit 21aacea42ecaa7aca9b686e8de0f79a1f4e7d668
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Jun 4 18:31:54 2022 +0930

    asan: uninitialised write in bfd_mach_o_write_contents
    
            * mach-o.c (bfd_mach_o_write_contents): Always set
            bfd_mach_o_dyld_info_command *_off fields.

Diff:
---
 bfd/mach-o.c | 35 ++++++++++-------------------------
 1 file changed, 10 insertions(+), 25 deletions(-)

diff --git a/bfd/mach-o.c b/bfd/mach-o.c
index 9f3f1f13e4e..c761544e21e 100644
--- a/bfd/mach-o.c
+++ b/bfd/mach-o.c
@@ -2656,31 +2656,16 @@ bfd_mach_o_write_contents (bfd *abfd)
 	{
 	  bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
 
-	  if (di->rebase_size != 0)
-	    {
-	      di->rebase_off = mdata->filelen;
-	      mdata->filelen += di->rebase_size;
-	    }
-	  if (di->bind_size != 0)
-	    {
-	      di->bind_off = mdata->filelen;
-	      mdata->filelen += di->bind_size;
-	    }
-	  if (di->weak_bind_size != 0)
-	    {
-	      di->weak_bind_off = mdata->filelen;
-	      mdata->filelen += di->weak_bind_size;
-	    }
-	  if (di->lazy_bind_size != 0)
-	    {
-	      di->lazy_bind_off = mdata->filelen;
-	      mdata->filelen += di->lazy_bind_size;
-	    }
-	  if (di->export_size != 0)
-	    {
-	      di->export_off = mdata->filelen;
-	      mdata->filelen += di->export_size;
-	    }
+	  di->rebase_off = di->rebase_size != 0 ? mdata->filelen : 0;
+	  mdata->filelen += di->rebase_size;
+	  di->bind_off = di->bind_size != 0 ? mdata->filelen : 0;
+	  mdata->filelen += di->bind_size;
+	  di->weak_bind_off = di->weak_bind_size != 0 ? mdata->filelen : 0;
+	  mdata->filelen += di->weak_bind_size;
+	  di->lazy_bind_off = di->lazy_bind_size != 0 ? mdata->filelen : 0;
+	  mdata->filelen += di->lazy_bind_size;
+	  di->export_off = di->export_size != 0 ? mdata->filelen : 0;
+	  mdata->filelen += di->export_size;
 	}
 	break;
       case BFD_MACH_O_LC_LOAD_DYLIB: