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libctf: decl, types: revise ctf_decl*, ctf_type_*name

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These all need fairly trivial revisions for prefix types.  While
we're at it, we can add explicit handling of nonrepresentable types,
returning CTF_K_UNKNOWN for such types rather than throwing an error,
so that type printing prints (nonrepresentable type) for such types
as it always intended to.
This commit is contained in:
Nick Alcock
2025-04-25 11:03:16 +01:00
parent 2c1a0a70d1
commit 097ff012e4
2 changed files with 25 additions and 14 deletions
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28
libctf/ctf-decl.c
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@@ -34,7 +34,7 @@
The functions in this file build a set of stacks from the type graph nodes
corresponding to the C operator precedence levels in the appropriate order.
The code in ctf_type_name() can then iterate over the levels and nodes in
The code in ctf_type_aname() can then iterate over the levels and nodes in
lexical precedence order and construct the final C declaration string. */
#include <ctf-impl.h>
@@ -79,16 +79,22 @@ ctf_decl_push (ctf_decl_t *cd, ctf_dict_t *fp, ctf_id_t type)
uint32_t kind, n = 1;
int is_qual = 0;
const ctf_type_t *tp;
const ctf_type_t *tp, *suffix;
ctf_arinfo_t ar;
if ((tp = ctf_lookup_by_id (&fp, type)) == NULL)
if ((tp = ctf_lookup_by_id (&fp, type, &suffix)) == NULL)
{
cd->cd_err = fp->ctf_errno;
return;
if (ctf_errno (fp) != ECTF_NONREPRESENTABLE)
{
cd->cd_err = fp->ctf_errno;
return;
}
kind = CTF_K_UNKNOWN;
}
else
kind = ctf_type_kind (fp, type);
switch (kind = LCTF_INFO_KIND (fp, tp->ctt_info))
switch (kind)
{
case CTF_K_ARRAY:
(void) ctf_array_info (fp, type, &ar);
@@ -98,21 +104,21 @@ ctf_decl_push (ctf_decl_t *cd, ctf_dict_t *fp, ctf_id_t type)
break;
case CTF_K_TYPEDEF:
if (ctf_strptr (fp, tp->ctt_name)[0] == '\0')
if (ctf_strptr (fp, suffix->ctt_name)[0] == '\0')
{
ctf_decl_push (cd, fp, tp->ctt_type);
ctf_decl_push (cd, fp, suffix->ctt_type);
return;
}
prec = CTF_PREC_BASE;
break;
case CTF_K_FUNCTION:
ctf_decl_push (cd, fp, tp->ctt_type);
ctf_decl_push (cd, fp, suffix->ctt_type);
prec = CTF_PREC_FUNCTION;
break;
case CTF_K_POINTER:
ctf_decl_push (cd, fp, tp->ctt_type);
ctf_decl_push (cd, fp, suffix->ctt_type);
prec = CTF_PREC_POINTER;
break;
@@ -125,7 +131,7 @@ ctf_decl_push (ctf_decl_t *cd, ctf_dict_t *fp, ctf_id_t type)
case CTF_K_VOLATILE:
case CTF_K_CONST:
case CTF_K_RESTRICT:
ctf_decl_push (cd, fp, tp->ctt_type);
ctf_decl_push (cd, fp, suffix->ctt_type);
prec = cd->cd_qualp;
is_qual++;
break;