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* stabsread.c (read_type): Move handling of '@' from type

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number handling to handling of types proper (as emitted by gcc!).
	For typedefs, allocate the typedef type before reading its
	definition, to properly handling recursive types.
This fixes PR 9434.
This commit is contained in:
Per Bothner 1996-04-15 23:45:51 +00:00
parent 5cf36a322a
commit 15b03b5783
2 changed files with 80 additions and 104 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
Mon Apr 15 16:34:11 1996 Per Bothner <bothner@kalessin.cygnus.com>
* stabsread.c (read_type): Move handling of '@' from type
number handling to handling of types proper (as emitted by gcc!).
For typedefs, allocate the typedef type before reading its
definition, to properly handling recursive types.
Mon Apr 15 11:19:26 1996 Jeffrey A Law (law@cygnus.com)
* ch-exp.c (calculate_array_length): Fix prototype.

177
gdb/stabsread.c
View File

@ -1346,52 +1346,10 @@ read_type (pp, objfile)
return dbx_alloc_type (typenums, objfile);
/* Type is being defined here. */
/* Skip the '='. */
++(*pp);
/* Skip the '='.
Also skip the type descriptor - we get it below with (*pp)[-1]. */
(*pp)+=2;
while (**pp == '@')
{
char *p = *pp + 1;
/* It might be a type attribute or a member type. */
if (isdigit (*p) || *p == '(' || *p == '-')
/* Member type. */
break;
else
{
/* Type attributes. */
char *attr = p;
/* Skip to the semicolon. */
while (*p != ';' && *p != '\0')
++p;
*pp = p;
if (*p == '\0')
return error_type (pp, objfile);
else
/* Skip the semicolon. */
++*pp;
switch (*attr)
{
case 's':
type_size = atoi (attr + 1);
if (type_size <= 0)
type_size = -1;
break;
case 'S':
is_string = 1;
break;
default:
/* Ignore unrecognized type attributes, so future compilers
can invent new ones. */
break;
}
}
}
/* Skip the type descriptor, we get it below with (*pp)[-1]. */
++(*pp);
}
else
{
@ -1401,6 +1359,7 @@ read_type (pp, objfile)
(*pp)++;
}
again:
type_descriptor = (*pp)[-1];
switch (type_descriptor)
{
@ -1519,58 +1478,35 @@ read_type (pp, objfile)
case '8':
case '9':
case '(':
(*pp)--;
{
char *pp_saved;
/* We deal with something like t(1,2)=(3,4)=... which
the Lucid compiler and recent gcc versions (post 2.7.3) use. */
(*pp)--;
pp_saved = *pp;
/* Peek ahead at the number to detect void. */
if (read_type_number (pp, xtypenums) != 0)
return error_type (pp, objfile);
if (typenums[0] == xtypenums[0] && typenums[1] == xtypenums[1])
/* It's being defined as itself. That means it is "void". */
type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile);
/* Allocate and enter the typedef type first.
This handles recursive types. */
type = dbx_alloc_type (typenums, objfile);
TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
{ struct type *xtype = read_type (pp, objfile);
if (type == xtype)
{
/* It's being defined as itself. That means it is "void". */
TYPE_CODE (type) = TYPE_CODE_VOID;
TYPE_LENGTH (type) = 1;
}
else if (type_size >= 0 || is_string)
{
*type = *xtype;
TYPE_NAME (type) = NULL;
TYPE_TAG_NAME (type) = NULL;
}
else
{
struct type *xtype;
/* Go back to the number and have read_type get it. This means
that we can deal with something like t(1,2)=(3,4)=... which
the Lucid compiler uses. */
*pp = pp_saved;
xtype = read_type (pp, objfile);
/* The type is being defined to another type. So we copy the type.
This loses if we copy a C++ class and so we lose track of how
the names are mangled (but g++ doesn't output stabs like this
now anyway). */
type = alloc_type (objfile);
if (SYMBOL_LINE (current_symbol) == 0)
{
*type = *xtype;
/* The idea behind clearing the names is that the only purpose
for defining a type to another type is so that the name of
one can be different. So we probably don't need to worry
much about the case where the compiler doesn't give a name
to the new type. */
TYPE_NAME (type) = NULL;
TYPE_TAG_NAME (type) = NULL;
}
else
{
TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
TYPE_TARGET_TYPE (type) = xtype;
}
TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
TYPE_TARGET_TYPE (type) = xtype;
}
if (typenums[0] != -1)
*dbx_lookup_type (typenums) = type;
break;
}
break;
/* In the following types, we must be sure to overwrite any existing
type that the typenums refer to, rather than allocating a new one
@ -1628,21 +1564,54 @@ read_type (pp, objfile)
/* FIXME! For now, we ignore const and volatile qualifiers. */
break;
/* FIXME -- we should be doing smash_to_XXX types here. */
case '@': /* Member (class & variable) type */
{
struct type *domain = read_type (pp, objfile);
struct type *memtype;
case '@':
if (isdigit (**pp) || **pp == '(' || **pp == '-')
{ /* Member (class & variable) type */
/* FIXME -- we should be doing smash_to_XXX types here. */
if (**pp != ',')
/* Invalid member type data format. */
return error_type (pp, objfile);
++*pp;
struct type *domain = read_type (pp, objfile);
struct type *memtype;
memtype = read_type (pp, objfile);
type = dbx_alloc_type (typenums, objfile);
smash_to_member_type (type, domain, memtype);
}
if (**pp != ',')
/* Invalid member type data format. */
return error_type (pp, objfile);
++*pp;
memtype = read_type (pp, objfile);
type = dbx_alloc_type (typenums, objfile);
smash_to_member_type (type, domain, memtype);
}
else /* type attribute */
{
char *attr = *pp;
/* Skip to the semicolon. */
while (**pp != ';' && **pp != '\0')
++(*pp);
if (**pp == '\0')
return error_type (pp, objfile);
else
++*pp; /* Skip the semicolon. */
switch (*attr)
{
case 's':
type_size = atoi (attr + 1);
if (type_size <= 0)
type_size = -1;
break;
case 'S':
is_string = 1;
break;
default:
/* Ignore unrecognized type attributes, so future compilers
can invent new ones. */
break;
}
++*pp;
goto again;
}
break;
case '#': /* Method (class & fn) type */