[PATCH] clear CONTENTS flag if "b" flag is given for COFF section

[J.W. Jagersma]

The "b" flag for COFF sections only unsets the LOAD attribute.  It
should also clear the CONTENTS attribute so that named bss sections
don't take up space in an object file.  This can be achieved by
setting the 'bss' flag in seg_info.

gas/
2020-03-24  Jan W. Jagersma  <jwjagersma@gmail.com>

	* config/obj-coff.c (obj_coff_section): Set bss flag in
	seg_info if "b" flag is given.
---
 gas/config/obj-coff.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gas/config/obj-coff.c b/gas/config/obj-coff.c
index 178ccaad6a..e97d9a22a1 100644
--- a/gas/config/obj-coff.c
+++ b/gas/config/obj-coff.c
@@ -1531,6 +1531,7 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
   char *name;
   unsigned int exp;
   flagword flags, oldflags;
+  bfd_boolean is_bss = FALSE;
   asection *sec;
 
   if (flag_mri)
@@ -1581,6 +1582,7 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
 		  /* Uninitialised data section.  */
 		  flags |= SEC_ALLOC;
 		  flags &=~ SEC_LOAD;
+		  is_bss = TRUE;
 		  break;
 
 		case 'n':
@@ -1652,6 +1654,9 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
 
   sec = subseg_new (name, (subsegT) exp);
 
+  if (is_bss)
+    seg_info (sec)->bss = 1;
+
   if (alignment >= 0)
     sec->alignment_power = alignment;
 
-- 
2.25.2