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lint: add debug logging for initialization using named members

This commit is contained in:
rillig 2021-01-01 20:02:56 +00:00
parent 2cd5c1a7b9
commit d82779b6ab
1 changed files with 32 additions and 3 deletions
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35
usr.bin/xlint/lint1/init.c
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@ -1,4 +1,4 @@
/* $NetBSD: init.c,v 1.54 2021/01/01 19:28:51 rillig Exp $ */
/* $NetBSD: init.c,v 1.55 2021/01/01 20:02:56 rillig Exp $ */
/*
* Copyright (c) 1994, 1995 Jochen Pohl
@ -37,10 +37,9 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: init.c,v 1.54 2021/01/01 19:28:51 rillig Exp $");
__RCSID("$NetBSD: init.c,v 1.55 2021/01/01 20:02:56 rillig Exp $");
#endif
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
@ -74,6 +73,19 @@ typedef struct istk {
struct istk *i_next; /* previous level */
} istk_t;
/*
* The names for a nested C99 initialization designator, in a circular list.
*
* Example:
* struct stat st = {
* .st_size = 123,
* .st_mtim.tv_sec = 45,
* .st_mtim.tv_nsec
* };
*
* During initialization, this list first contains ["st_size"], then
* ["st_mtim", "tv_sec"], then ["st_mtim", "tv_nsec"].
*/
typedef struct namlist {
const char *n_name;
struct namlist *n_prev;
@ -144,6 +156,21 @@ pop_member(void)
}
}
static void
named_member_dprint(void)
{
namlist_t *name;
if (namedmem == NULL)
return;
name = namedmem;
DPRINTF(("named member:"));
do {
DPRINTF((" %s", name->n_name));
name = name->n_next;
} while (name != namedmem);
DPRINTF(("\n"));
}
/*
* Initialize the initialisation stack by putting an entry for the variable
@ -546,6 +573,8 @@ mkinit(tnode_t *tn)
DPRINTF(("%s: type=%s, value=%s\n", __func__,
tyname(buf, sizeof(buf), tn->tn_type),
print_tnode(sbuf, sizeof(sbuf), tn)));
named_member_dprint();
if (initerr || tn == NULL)
return;