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msvcrt: Use a separate stack for back references to names 

Use a separate array/stack for the back references to names as
sym->stack is used to push temporary strings to it which breaks back
referencing in some occasions (26 symbols in the mfc42 dll).  During
this cleanup get_class() a little bit.
This commit is contained in:
Michael Stefaniuc 2006-02-20 11:18:04 +01:00 committed by Alexandre Julliard
parent e367ebbf19
commit 262a5eec78
1 changed files with 27 additions and 20 deletions
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47
dlls/msvcrt/undname.c
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@ -91,6 +91,7 @@ struct parsed_symbol
const char* current; /* pointer in input (mangled) string */
char* result; /* demangled string */
struct array names; /* array of names for back reference */
struct array stack; /* stack of parsed strings */
void* alloc_list; /* linked list of allocated blocks */
@ -420,9 +421,9 @@ static char* get_literal_string(struct parsed_symbol* sym)
}
} while (*++sym->current != '@');
sym->current++;
str_array_push(sym, ptr, sym->current - 1 - ptr, &sym->stack);
str_array_push(sym, ptr, sym->current - 1 - ptr, &sym->names);
return str_array_get_ref(&sym->stack, sym->stack.num - sym->stack.start - 1);
return str_array_get_ref(&sym->names, sym->names.num - sym->names.start - 1);
}
/******************************************************************
@ -440,7 +441,7 @@ static char* get_literal_string(struct parsed_symbol* sym)
*/
static BOOL get_class(struct parsed_symbol* sym)
{
const char* ptr;
const char* name = NULL;
while (*sym->current != '@')
{
@ -451,39 +452,44 @@ static BOOL get_class(struct parsed_symbol* sym)
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9':
ptr = str_array_get_ref(&sym->stack, *sym->current++ - '0');
if (!ptr) return FALSE;
str_array_push(sym, ptr, -1, &sym->stack);
name = str_array_get_ref(&sym->names, *sym->current++ - '0');
break;
case '?':
if (*++sym->current == '$')
{
const char* name;
char* full = NULL;
/* In a template argument list the back reference to names
table is separately created. '0' points to the class
component name with the template arguments. We use the same
stack array to hold the names but save/restore the stack
state before/after parsing the template argument list. */
char* args = NULL;
unsigned num_mark = sym->stack.num;
unsigned start_mark = sym->stack.start;
unsigned num_mark = sym->names.num;
unsigned start_mark = sym->names.start;
unsigned stack_mark = sym->stack.num;
sym->names.start = sym->names.num;
sym->current++;
sym->stack.start = sym->stack.num;
if (!(name = get_literal_string(sym)))
return FALSE;
args = get_args(sym, NULL, FALSE, '<', '>');
if (args != NULL)
{
full = str_printf(sym, "%s%s", name, args);
}
if (!full) return FALSE;
sym->stack.elts[num_mark] = full;
sym->stack.num = num_mark + 1;
sym->stack.start = start_mark;
name = str_printf(sym, "%s%s", name, args);
sym->names.num = num_mark;
sym->names.start = start_mark;
sym->stack.num = stack_mark;
/* Now that we are back to the standard name scope push
the class component with all its template arguments
to the names array for back reference. */
str_array_push(sym, name, -1, &sym->names);
}
break;
default:
if (!get_literal_string(sym))
return FALSE;
name = get_literal_string(sym);
break;
}
if (!name)
return FALSE;
str_array_push(sym, name, -1, &sym->stack);
}
sym->current++;
return TRUE;
@ -1027,6 +1033,7 @@ static BOOL symbol_demangle(struct parsed_symbol* sym)
/* MS mangled names always begin with '?' */
if (*sym->current != '?') return FALSE;
str_array_init(&sym->names);
str_array_init(&sym->stack);
sym->current++;