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| author | Alan Modra <amodra@gmail.com> | 2021-06-11 14:06:47 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-06-11 14:06:47 +0930 |
| commit | f64b9b13ce4bb927f47a1fe0257c3794c6357c8c (patch) | |
| tree | 241f0a0b457807eb8e4ec179728e38899087ebe5 /ld/ldelf.c | |
| parent | 860cc54cd40334ec8709529f01e42fb4ac50b54f (diff) | |
| download | gdb-f64b9b13ce4bb927f47a1fe0257c3794c6357c8c.zip gdb-f64b9b13ce4bb927f47a1fe0257c3794c6357c8c.tar.gz gdb-f64b9b13ce4bb927f47a1fe0257c3794c6357c8c.tar.bz2 | |
PR27952, Disallow ET_DYN DF_1_PIE linker input
This patch adds a new elf_tdata flag, is_pie, set during the linker's
open_input_bfds processing. The flag is then used to reject attempts
to link a PIE as if it were a shared library.
bfd/
PR 27952
* elf-bfd.h (struct elf_obj_tdata): Add is_pie.
* elflink.c (elf_link_add_object_symbols): Set is_pie.
ld/
PR 27952
* ldelf.c (ldelf_after_open): Error on input PIEs too.
Diffstat (limited to 'ld/ldelf.c')
| -rw-r--r-- | ld/ldelf.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -1048,7 +1048,9 @@ ldelf_after_open (int use_libpath, int native, int is_linux, int is_freebsd, && elf_tdata (abfd) != NULL && elf_tdata (abfd)->elf_header != NULL /* FIXME: Maybe check for other non-supportable types as well ? */ - && elf_tdata (abfd)->elf_header->e_type == ET_EXEC) + && (elf_tdata (abfd)->elf_header->e_type == ET_EXEC + || (elf_tdata (abfd)->elf_header->e_type == ET_DYN + && elf_tdata (abfd)->is_pie))) einfo (_("%F%P: cannot use executable file '%pB' as input to a link\n"), abfd); } |