[binutils-gdb] bfd: release the PE COMDAT hash once all sections are made

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=81d6f0640e78b4987b09690451d4edd80b55217f

commit 81d6f0640e78b4987b09690451d4edd80b55217f
Author: Oleg Tolmatcev <[email protected]>
Date:   Wed Aug 26 08:58:11 2026 +0200

    bfd: release the PE COMDAT hash once all sections are made
    
    styp_to_sec_flags builds pe_data (abfd)->comdat_hash, one entry plus a
    strdup'd symbol name per input section.  Nothing frees it during a link,
    so it survives to exit.
    
    Free it once the section table has been built.  This is safe because
    styp_to_sec_flags() would recreate the hash whenever it finds it NULL.
    Presently that wouldn't ever come into play, though.
    
    This significantly reduces peak memory usage.
    
    bfd/
            * coffgen.c (coff_real_object_p): Free the COMDAT hash after
            the section table has been built.
    
    Signed-off-by: Oleg Tolmatcev <[email protected]>

Diff:
---
 bfd/coffgen.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bfd/coffgen.c b/bfd/coffgen.c
index f3060642a5d..92b867bd187 100644
--- a/bfd/coffgen.c
+++ b/bfd/coffgen.c
@@ -368,6 +368,13 @@ coff_real_object_p (bfd *abfd,
     }
 
   _bfd_coff_free_symbols (abfd);
+
+  if (obj_pe (abfd) && pe_data (abfd)->comdat_hash != NULL)
+    {
+      htab_delete (pe_data (abfd)->comdat_hash);
+      pe_data (abfd)->comdat_hash = NULL;
+    }
+
   return coff_object_cleanup;
 
  fail: