[binutils-gdb] objcopy: Don't extend the output section size

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=08c3cbe5926e4d355b5cb70bbec2b1eeb40c2944

commit 08c3cbe5926e4d355b5cb70bbec2b1eeb40c2944
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Jun 21 06:36:56 2025 +0800

    objcopy: Don't extend the output section size
    
    Since the output section contents are copied from the input, don't
    extend the output section size beyond the input section size.
    
            PR binutils/33049
            * objcopy.c (copy_section): Don't extend the output section
            size beyond the input section size.
    
    Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

Diff:
---
 binutils/objcopy.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index 366e1079d82..2e98ba44c01 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -4650,6 +4650,7 @@ copy_section (bfd *ibfd, sec_ptr isection, bfd *obfd)
 	  char *to = (char *) memhunk;
 	  char *end = (char *) memhunk + size;
 	  int i;
+	  bfd_size_type memhunk_size = size;
 
 	  /* If the section address is not exactly divisible by the interleave,
 	     then we must bias the from address.  If the copy_byte is less than
@@ -4669,6 +4670,11 @@ copy_section (bfd *ibfd, sec_ptr isection, bfd *obfd)
 	      }
 
 	  size = (size + interleave - 1 - copy_byte) / interleave * copy_width;
+
+	  /* Don't extend the output section size.  */
+	  if (size > memhunk_size)
+	    size = memhunk_size;
+
 	  osection->lma /= interleave;
 	  if (copy_byte < extra)
 	    osection->lma++;