[binutils-gdb] Use a const dwarf2_section_info in macro reader

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4f9c1eda9ffc161015b6d9cc6dc958b67de680e6

commit 4f9c1eda9ffc161015b6d9cc6dc958b67de680e6
Author: Tom Tromey <tom@tromey.com>
Date:   Thu Mar 26 09:28:08 2020 -0600

    Use a const dwarf2_section_info in macro reader
    
    This changes the DWARF macro reader to use a const dwarf2_section_info.
    
    gdb/ChangeLog
    2020-03-26  Tom Tromey  <tom@tromey.com>
    
            * dwarf2/macro.h (dwarf_decode_macros): Make section parameter
            const.
            * dwarf2/macro.c (skip_form_bytes, skip_unknown_opcode)
            (dwarf_decode_macro_bytes, dwarf_decode_macros): Make section
            parameter const.

Diff:
---
 gdb/ChangeLog      |  8 ++++++++
 gdb/dwarf2/macro.c | 11 ++++++-----
 gdb/dwarf2/macro.h |  2 +-
 3 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8723ff9b9fe..c9459365173 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2020-03-26  Tom Tromey  <tom@tromey.com>
+
+	* dwarf2/macro.h (dwarf_decode_macros): Make section parameter
+	const.
+	* dwarf2/macro.c (skip_form_bytes, skip_unknown_opcode)
+	(dwarf_decode_macro_bytes, dwarf_decode_macros): Make section
+	parameter const.
+
 2020-03-26  Tom Tromey  <tom@tromey.com>
 
 	* dwarf2/read.c (dwarf_decode_macros): Make "lh" const.
diff --git a/gdb/dwarf2/macro.c b/gdb/dwarf2/macro.c
index 01af58de29f..49586399673 100644
--- a/gdb/dwarf2/macro.c
+++ b/gdb/dwarf2/macro.c
@@ -231,7 +231,7 @@ static const gdb_byte *
 skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end,
 		 enum dwarf_form form,
 		 unsigned int offset_size,
-		 struct dwarf2_section_info *section)
+		 const struct dwarf2_section_info *section)
 {
   unsigned int bytes_read;
 
@@ -322,7 +322,7 @@ skip_unknown_opcode (unsigned int opcode,
 		     const gdb_byte *mac_ptr, const gdb_byte *mac_end,
 		     bfd *abfd,
 		     unsigned int offset_size,
-		     struct dwarf2_section_info *section)
+		     const struct dwarf2_section_info *section)
 {
   unsigned int bytes_read, i;
   unsigned long arg;
@@ -424,7 +424,7 @@ dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile,
 			  const gdb_byte *mac_ptr, const gdb_byte *mac_end,
 			  struct macro_source_file *current_file,
 			  const struct line_header *lh,
-			  struct dwarf2_section_info *section,
+			  const struct dwarf2_section_info *section,
 			  int section_is_gnu, int section_is_dwz,
 			  unsigned int offset_size,
 			  htab_t include_hash)
@@ -634,7 +634,7 @@ dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile,
 	    LONGEST offset;
 	    void **slot;
 	    bfd *include_bfd = abfd;
-	    struct dwarf2_section_info *include_section = section;
+	    const struct dwarf2_section_info *include_section = section;
 	    const gdb_byte *include_mac_end = mac_end;
 	    int is_dwz = section_is_dwz;
 	    const gdb_byte *new_mac_ptr;
@@ -710,7 +710,8 @@ dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile,
 
 void
 dwarf_decode_macros (struct dwarf2_per_objfile *dwarf2_per_objfile,
-		     buildsym_compunit *builder, dwarf2_section_info *section,
+		     buildsym_compunit *builder,
+		     const dwarf2_section_info *section,
 		     const struct line_header *lh, unsigned int offset_size,
 		     unsigned int offset, int section_is_gnu)
 {
diff --git a/gdb/dwarf2/macro.h b/gdb/dwarf2/macro.h
index b92987cf0d1..cb66a6f50cd 100644
--- a/gdb/dwarf2/macro.h
+++ b/gdb/dwarf2/macro.h
@@ -24,7 +24,7 @@ struct buildsym_compunit;
 
 extern void dwarf_decode_macros (struct dwarf2_per_objfile *dwarf2_per_objfile,
 				 buildsym_compunit *builder,
-				 dwarf2_section_info *section,
+				 const dwarf2_section_info *section,
 				 const struct line_header *lh,
 				 unsigned int offset_size,
 				 unsigned int offset,