espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-05-22 17:57:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

libctf, ld: handle nonrepresentable types better

Browse Source 
ctf_type_visit (used, among other things, by the type dumping code) was
aborting when it saw a nonrepresentable type anywhere: even a single
structure member with a nonrepresentable type caused an abort with
ECTF_NONREPRESENTABLE.  This is not useful behaviour, given that the
abort comes from a type-resolution we are only doing in order to
determine whether the type is a structure or union.  We know
nonrepresentable types can't be either, so handle that case and
pass the nonrepresentable type down.

(The added test verifies that the dumper now handles this case and
prints nonrepresentable structure members as it already does
nonrepresentable top-level types, rather than skipping the whole
structure -- or, without the previous commit, skipping the whole types
section.)

ld/ChangeLog
2021-10-25  Nick Alcock  <nick.alcock@oracle.com>

	* testsuite/ld-ctf/nonrepresentable-member.*: New test.

libctf/ChangeLog
2021-10-25  Nick Alcock  <nick.alcock@oracle.com>

	* ctf-types.c (ctf_type_rvisit): Handle nonrepresentable types.
This commit is contained in:
Nick Alcock
2021-10-25 11:17:02 +01:00
parent a0cc569d59
commit eb5323fdf8
5 changed files with 53 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
libctf/ctf-types.c
View File

@ -1641,20 +1641,27 @@ ctf_type_rvisit (ctf_dict_t *fp, ctf_id_t type, ctf_visit_f *func,
unsigned char *vlen;
ssize_t size, increment, vbytes;
uint32_t kind, n, i = 0;
int nonrepresentable = 0;
int rc;
if ((type = ctf_type_resolve (fp, type)) == CTF_ERR)
return -1; /* errno is set for us. */
if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) {
if (ctf_errno (fp) != ECTF_NONREPRESENTABLE)
return -1; /* errno is set for us. */
else
nonrepresentable = 1;
}
if ((tp = ctf_lookup_by_id (&fp, type)) == NULL)
return -1; /* errno is set for us. */
if (!nonrepresentable)
if ((tp = ctf_lookup_by_id (&fp, type)) == NULL)
return -1; /* errno is set for us. */
if ((rc = func (name, otype, offset, depth, arg)) != 0)
return rc;
kind = LCTF_INFO_KIND (fp, tp->ctt_info);
if (!nonrepresentable)
kind = LCTF_INFO_KIND (fp, tp->ctt_info);
if (kind != CTF_K_STRUCT && kind != CTF_K_UNION)
if (nonrepresentable || (kind != CTF_K_STRUCT && kind != CTF_K_UNION))
return 0;
ctf_get_ctt_size (fp, tp, &size, &increment);