diff options
| author | Alan Modra <amodra@gmail.com> | 2022-12-23 09:27:14 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2022-12-23 10:35:38 +1030 |
| commit | 160a943ff8aa0dd9105164f10d4bfca9db872999 (patch) | |
| tree | f8f86d35b0a0d504dae87b91f67d9b4e0472cae9 /ld/emultempl | |
| parent | 2ac6aa431ecf8bf6afdc18020f3d6e55458df223 (diff) | |
| download | binutils-gdb-160a943ff8aa0dd9105164f10d4bfca9db872999.tar.gz | |
COFF build-id writes uninitialised data to file
1) The first write in write_build_id wrote rubbish past the struct
external_IMAGE_DEBUG_DIRECTORY, which was later overwritten with
correct data. No user visible problem there, except that tools like
valgrind complain.
2) The size for the pdb name was incorrectly calculated.
* emultempl/pe.em (write_build_id): Write the debug directory,
not the entire section contents.
(setup_build_id): Add size for the base name of pdb_name, not
the full path.
* emultempl/pep.em: Likewise.
* testsuite/ld-pe/pdb2-section-contrib.d: Update.
Diffstat (limited to 'ld/emultempl')
| -rw-r--r-- | ld/emultempl/pe.em | 6 | ||||
| -rw-r--r-- | ld/emultempl/pep.em | 6 |
2 files changed, 4 insertions, 8 deletions
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em index 907259535b7..1e0e23df043 100644 --- a/ld/emultempl/pe.em +++ b/ld/emultempl/pe.em @@ -1285,7 +1285,6 @@ write_build_id (bfd *abfd) asection *asec; struct bfd_link_order *link_order = NULL; unsigned char *contents; - bfd_size_type size; bfd_size_type build_id_size; unsigned char *build_id; const char *pdb_base_name = NULL; @@ -1320,7 +1319,6 @@ write_build_id (bfd *abfd) if (t->build_id.sec->contents == NULL) t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); contents = t->build_id.sec->contents; - size = t->build_id.sec->size; build_id_size = compute_build_id_size (t->build_id.style); build_id = xmalloc (build_id_size); @@ -1351,7 +1349,7 @@ write_build_id (bfd *abfd) if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) return 0; - if (bfd_bwrite (contents, size, abfd) != size) + if (bfd_bwrite (contents, sizeof (*ext), abfd) != sizeof (*ext)) return 0; if (pdb) @@ -1417,7 +1415,7 @@ setup_build_id (bfd *ibfd) + sizeof (CV_INFO_PDB70) + 1; if (pdb_name) - s->size += strlen (pdb_name); + s->size += strlen (lbasename (pdb_name)); return true; } diff --git a/ld/emultempl/pep.em b/ld/emultempl/pep.em index e2c538e6d99..e61414893ad 100644 --- a/ld/emultempl/pep.em +++ b/ld/emultempl/pep.em @@ -1277,7 +1277,6 @@ write_build_id (bfd *abfd) asection *asec; struct bfd_link_order *link_order = NULL; unsigned char *contents; - bfd_size_type size; bfd_size_type build_id_size; unsigned char *build_id; const char *pdb_base_name = NULL; @@ -1312,7 +1311,6 @@ write_build_id (bfd *abfd) if (t->build_id.sec->contents == NULL) t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); contents = t->build_id.sec->contents; - size = t->build_id.sec->size; build_id_size = compute_build_id_size (t->build_id.style); build_id = xmalloc (build_id_size); @@ -1343,7 +1341,7 @@ write_build_id (bfd *abfd) if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) return 0; - if (bfd_bwrite (contents, size, abfd) != size) + if (bfd_bwrite (contents, sizeof (*ext), abfd) != sizeof (*ext)) return 0; if (pdb) @@ -1409,7 +1407,7 @@ setup_build_id (bfd *ibfd) + sizeof (CV_INFO_PDB70) + 1; if (pdb_name) - s->size += strlen (pdb_name); + s->size += strlen (lbasename (pdb_name)); return true; } |