/* Demangler for g++ V3 ABI.
- Copyright (C) 2003-2018 Free Software Foundation, Inc.
+ Copyright (C) 2003-2019 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@wasabisystems.com>.
This file is part of the libiberty library, which is part of GCC.
#else
#ifdef __STDC__
#ifdef __STDC_VERSION__
-#if __STDC_VERSION__ >= 199901L
+#if __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__
#define CP_DYNAMIC_ARRAYS
-#endif /* __STDC__VERSION >= 199901L */
+#endif /* __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__ */
#endif /* defined (__STDC_VERSION__) */
#endif /* defined (__STDC__) */
#endif /* ! defined (__GNUC__) */
case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
printf ("template parameter %ld\n", dc->u.s_number.number);
return;
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
+ printf ("template parameter object\n");
+ break;
case DEMANGLE_COMPONENT_FUNCTION_PARAM:
printf ("function parameter %ld\n", dc->u.s_number.number);
return;
int
cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len)
{
- if (p == NULL || s == NULL || len == 0)
+ if (p == NULL || s == NULL || len <= 0)
return 0;
p->d_printing = 0;
p->type = DEMANGLE_COMPONENT_NAME;
case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
case DEMANGLE_COMPONENT_NULLARY:
case DEMANGLE_COMPONENT_TRINARY_ARG2:
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
if (left == NULL)
return NULL;
break;
really apply here; this happens when parsing a class
which is local to a function. */
if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME)
- while (is_fnqual_component_type (d_right (dc)->type))
- d_right (dc) = d_left (d_right (dc));
+ {
+ while (d_right (dc) != NULL
+ && is_fnqual_component_type (d_right (dc)->type))
+ d_right (dc) = d_left (d_right (dc));
+
+ if (d_right (dc) == NULL)
+ dc = NULL;
+ }
}
else
{
::= TT <type>
::= TI <type>
::= TS <type>
+ ::= TA <template-arg>
::= GV <(object) name>
::= T <call-offset> <(base) encoding>
::= Tc <call-offset> <call-offset> <(base) encoding>
return d_make_comp (di, DEMANGLE_COMPONENT_TLS_WRAPPER,
d_name (di), NULL);
+ case 'A':
+ return d_make_comp (di, DEMANGLE_COMPONENT_TPARM_OBJ,
+ d_template_arg (di), NULL);
+
default:
return NULL;
}
/* 27 */ { NL ("decimal64"), NL ("decimal64"), D_PRINT_DEFAULT },
/* 28 */ { NL ("decimal128"), NL ("decimal128"), D_PRINT_DEFAULT },
/* 29 */ { NL ("half"), NL ("half"), D_PRINT_FLOAT },
- /* 30 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
- /* 31 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
- /* 32 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
+ /* 30 */ { NL ("char8_t"), NL ("char8_t"), D_PRINT_DEFAULT },
+ /* 31 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
+ /* 32 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
+ /* 33 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
D_PRINT_DEFAULT },
};
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
di->expansion += ret->u.s_builtin.type->len;
break;
+ case 'u':
+ /* char8_t */
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+ di->expansion += ret->u.s_builtin.type->len;
+ break;
case 's':
/* char16_t */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'i':
/* char32_t */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'n':
/* decltype(nullptr) */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[33]);
di->expansion += ret->u.s_builtin.type->len;
break;
static struct demangle_component *
d_function_type (struct d_info *di)
{
- struct demangle_component *ret;
+ struct demangle_component *ret = NULL;
- if (! d_check_char (di, 'F'))
- return NULL;
- if (d_peek_char (di) == 'Y')
+ if ((di->options & DMGL_NO_RECURSE_LIMIT) == 0)
{
- /* Function has C linkage. We don't print this information.
- FIXME: We should print it in verbose mode. */
- d_advance (di, 1);
+ if (di->recursion_level > DEMANGLE_RECURSION_LIMIT)
+ /* FIXME: There ought to be a way to report
+ that the recursion limit has been reached. */
+ return NULL;
+
+ di->recursion_level ++;
}
- ret = d_bare_function_type (di, 1);
- ret = d_ref_qualifier (di, ret);
- if (! d_check_char (di, 'E'))
- return NULL;
+ if (d_check_char (di, 'F'))
+ {
+ if (d_peek_char (di) == 'Y')
+ {
+ /* Function has C linkage. We don't print this information.
+ FIXME: We should print it in verbose mode. */
+ d_advance (di, 1);
+ }
+ ret = d_bare_function_type (di, 1);
+ ret = d_ref_qualifier (di, ret);
+
+ if (! d_check_char (di, 'E'))
+ ret = NULL;
+ }
+
+ if ((di->options & DMGL_NO_RECURSE_LIMIT) == 0)
+ di->recursion_level --;
return ret;
}
{
/* Brace-enclosed initializer list, untyped or typed. */
struct demangle_component *type = NULL;
+ d_advance (di, 2);
if (peek == 't')
type = cplus_demangle_type (di);
- if (!d_peek_next_char (di))
+ if (!d_peek_char (di) || !d_peek_next_char (di))
return NULL;
- d_advance (di, 2);
return d_make_comp (di, DEMANGLE_COMPONENT_INITIALIZER_LIST,
type, d_exprlist (di, 'E'));
}
are larger than the actual numbers encountered. */
static void
-d_count_templates_scopes (int *num_templates, int *num_scopes,
+d_count_templates_scopes (struct d_print_info *dpi,
const struct demangle_component *dc)
{
if (dc == NULL)
break;
case DEMANGLE_COMPONENT_TEMPLATE:
- (*num_templates)++;
+ dpi->num_copy_templates++;
goto recurse_left_right;
case DEMANGLE_COMPONENT_REFERENCE:
case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
if (d_left (dc)->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM)
- (*num_scopes)++;
+ dpi->num_saved_scopes++;
goto recurse_left_right;
case DEMANGLE_COMPONENT_QUAL_NAME:
case DEMANGLE_COMPONENT_VECTOR_TYPE:
case DEMANGLE_COMPONENT_ARGLIST:
case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
case DEMANGLE_COMPONENT_INITIALIZER_LIST:
case DEMANGLE_COMPONENT_CAST:
case DEMANGLE_COMPONENT_CONVERSION:
case DEMANGLE_COMPONENT_TAGGED_NAME:
case DEMANGLE_COMPONENT_CLONE:
recurse_left_right:
- d_count_templates_scopes (num_templates, num_scopes,
- d_left (dc));
- d_count_templates_scopes (num_templates, num_scopes,
- d_right (dc));
+ /* PR 89394 - Check for too much recursion. */
+ if (dpi->recursion > DEMANGLE_RECURSION_LIMIT)
+ /* FIXME: There ought to be a way to report to the
+ user that the recursion limit has been reached. */
+ return;
+
+ ++ dpi->recursion;
+ d_count_templates_scopes (dpi, d_left (dc));
+ d_count_templates_scopes (dpi, d_right (dc));
+ -- dpi->recursion;
break;
case DEMANGLE_COMPONENT_CTOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_ctor.name);
+ d_count_templates_scopes (dpi, dc->u.s_ctor.name);
break;
case DEMANGLE_COMPONENT_DTOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_dtor.name);
+ d_count_templates_scopes (dpi, dc->u.s_dtor.name);
break;
case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_extended_operator.name);
+ d_count_templates_scopes (dpi, dc->u.s_extended_operator.name);
break;
case DEMANGLE_COMPONENT_FIXED_TYPE:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_fixed.length);
+ d_count_templates_scopes (dpi, dc->u.s_fixed.length);
break;
case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
- d_count_templates_scopes (num_templates, num_scopes,
- d_left (dc));
+ d_count_templates_scopes (dpi, d_left (dc));
break;
case DEMANGLE_COMPONENT_LAMBDA:
case DEMANGLE_COMPONENT_DEFAULT_ARG:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_unary_num.sub);
+ d_count_templates_scopes (dpi, dc->u.s_unary_num.sub);
break;
}
}
dpi->next_copy_template = 0;
dpi->num_copy_templates = 0;
- d_count_templates_scopes (&dpi->num_copy_templates,
- &dpi->num_saved_scopes, dc);
+ d_count_templates_scopes (dpi, dc);
+ /* If we did not reach the recursion limit, then reset the
+ current recursion value back to 0, so that we can print
+ the templates. */
+ if (dpi->recursion < DEMANGLE_RECURSION_LIMIT)
+ dpi->recursion = 0;
dpi->num_copy_templates *= dpi->num_saved_scopes;
dpi->current_template = NULL;
typed_name = d_right (typed_name);
if (typed_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
typed_name = typed_name->u.s_unary_num.sub;
- if (typed_name == NULL)
- {
- d_print_error (dpi);
- return;
- }
- while (is_fnqual_component_type (typed_name->type))
+ while (typed_name != NULL
+ && is_fnqual_component_type (typed_name->type))
{
if (i >= sizeof adpm / sizeof adpm[0])
{
typed_name = d_left (typed_name);
}
+ if (typed_name == NULL)
+ {
+ d_print_error (dpi);
+ return;
+ }
}
/* If typed_name is a template, then it applies to the
}
return;
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
+ d_append_string (dpi, "template parameter object for ");
+ d_print_comp (dpi, options, d_left (dc));
+ return;
+
case DEMANGLE_COMPONENT_CTOR:
d_print_comp (dpi, options, dc->u.s_ctor.name);
return;
di->n = mangled;
- /* We can not need more components than twice the number of chars in
+ /* We cannot need more components than twice the number of chars in
the mangled string. Most components correspond directly to
chars, but the ARGLIST types are exceptions. */
di->num_comps = 2 * len;
di->next_comp = 0;
- /* Similarly, we can not need more substitutions than there are
+ /* Similarly, we cannot need more substitutions than there are
chars in the mangled string. */
di->num_subs = len;
di->next_sub = 0;
di->expansion = 0;
di->is_expression = 0;
di->is_conversion = 0;
+ di->recursion_level = 0;
}
/* Internal implementation for the demangler. If MANGLED is a g++ v3 ABI
cplus_demangle_init_info (mangled, options, strlen (mangled), &di);
+ /* PR 87675 - Check for a mangled string that is so long
+ that we do not have enough stack space to demangle it. */
+ if (((options & DMGL_NO_RECURSE_LIMIT) == 0)
+ /* This check is a bit arbitrary, since what we really want to do is to
+ compare the sizes of the di.comps and di.subs arrays against the
+ amount of stack space remaining. But there is no portable way to do
+ this, so instead we use the recursion limit as a guide to the maximum
+ size of the arrays. */
+ && (unsigned long) di.num_comps > DEMANGLE_RECURSION_LIMIT)
+ {
+ /* FIXME: We need a way to indicate that a stack limit has been reached. */
+ return 0;
+ }
+
{
#ifdef CP_DYNAMIC_ARRAYS
__extension__ struct demangle_component comps[di.num_comps];
projects / deliverable / binutils-gdb.git / blobdiff