Clear SHF_GROUP flag when linking

SHF_GROUP flag set on a section indicates that it is part of a section
group and that if the section is removed, the other sections in the same
group should be removed as well [1]. Since section group are guide for
the linking process, they do not have any meaning after linking has
occured. TCC rightfully [2] discard such sections (by not recognizing the
section type) but keeps the SHF_GROUP flag set on sections that were
part of a section group which confuses binutils (objdump and gdb at
least). Clearing that bit makes objdump and gdb accept binaries created
by TCC.

[1] https://docs.oracle.com/cd/E19683-01/816-1386/chapter7-26/index.html
[2] GNU ld does the same

1 files changed, 1 insertions, 1 deletions

diff --git a/tccelf.c b/tccelf.c
index 2f8df1d..ac8fd0f 100644
--- a/tccelf.c
+++ b/tccelf.c
@@ -3047,7 +3047,7 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
             }
         }
         /* not found: create new section */
-        s = new_section(s1, sh_name, sh->sh_type, sh->sh_flags);
+        s = new_section(s1, sh_name, sh->sh_type, sh->sh_flags & ~SHF_GROUP);
         /* take as much info as possible from the section. sh_link and
            sh_info will be updated later */
         s->sh_addralign = sh->sh_addralign;