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C++ FE: handle misspelled identifiers and typenames 

gcc/cp/ChangeLog:
	PR c/70339
	PR c/71858
	* name-lookup.c: Include gcc-rich-location.h, spellcheck-tree.h,
	and parser.h.
	(suggest_alternatives_for): If no candidates are found, try
	lookup_name_fuzzy and report if if finds a suggestion.
	(consider_binding_level): New function.
	(lookup_name_fuzzy) New function.
	* parser.c: Include gcc-rich-location.h.
	(cp_lexer_next_token_is_decl_specifier_keyword): Move most of
	logic into...
	(cp_keyword_starts_decl_specifier_p): ...this new function.
	(cp_parser_diagnose_invalid_type_name): When issuing
	"does not name a type" errors, attempt to make a suggestion using
	lookup_name_fuzzy.
	* parser.h (cp_keyword_starts_decl_specifier_p): New prototype.
	* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Reject
	types that are not CLASS_TYPE_P, rather than rejecting individual
	tree codes.

gcc/testsuite/ChangeLog:
	PR c/70339
	PR c/71858
	* g++.dg/spellcheck-identifiers.C: New test case, based on
	gcc.dg/spellcheck-identifiers.c.
	* g++.dg/spellcheck-identifiers-2.C: New test case, based on
	gcc.dg/spellcheck-identifiers-2.c.
	* g++.dg/spellcheck-typenames.C: New test case, based on
	gcc.dg/spellcheck-typenames.c

From-SVN: r238538
This commit is contained in:
David Malcolm 2016-07-20 18:42:11 +00:00 committed by David Malcolm
parent 1397e16301
commit 52ed68f71a
9 changed files with 563 additions and 20 deletions
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22
gcc/cp/ChangeLog
View File

@ -1,3 +1,25 @@
2016-07-20 David Malcolm <dmalcolm@redhat.com>
PR c/70339
PR c/71858
* name-lookup.c: Include gcc-rich-location.h, spellcheck-tree.h,
and parser.h.
(suggest_alternatives_for): If no candidates are found, try
lookup_name_fuzzy and report if if finds a suggestion.
(consider_binding_level): New function.
(lookup_name_fuzzy) New function.
* parser.c: Include gcc-rich-location.h.
(cp_lexer_next_token_is_decl_specifier_keyword): Move most of
logic into...
(cp_keyword_starts_decl_specifier_p): ...this new function.
(cp_parser_diagnose_invalid_type_name): When issuing
"does not name a type" errors, attempt to make a suggestion using
lookup_name_fuzzy.
* parser.h (cp_keyword_starts_decl_specifier_p): New prototype.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Reject
types that are not CLASS_TYPE_P, rather than rejecting individual
tree codes.
2016-07-20 Jakub Jelinek <jakub@redhat.com>
PR c++/71909

116
gcc/cp/name-lookup.c
View File

@ -29,6 +29,9 @@ along with GCC; see the file COPYING3. If not see
#include "debug.h"
#include "c-family/c-pragma.h"
#include "params.h"
#include "gcc-rich-location.h"
#include "spellcheck-tree.h"
#include "parser.h"
/* The bindings for a particular name in a particular scope. */
@ -4435,9 +4438,20 @@ suggest_alternatives_for (location_t location, tree name)
namespaces_to_search.release ();
/* Nothing useful to report. */
/* Nothing useful to report for NAME. Report on likely misspellings,
or do nothing. */
if (candidates.is_empty ())
return;
{
const char *fuzzy_name = lookup_name_fuzzy (name, FUZZY_LOOKUP_NAME);
if (fuzzy_name)
{
gcc_rich_location richloc (location);
richloc.add_fixit_misspelled_id (location, fuzzy_name);
inform_at_rich_loc (&richloc, "suggested alternative: %qs",
fuzzy_name);
}
return;
}
inform_n (location, candidates.length (),
"suggested alternative:",
@ -4672,6 +4686,104 @@ qualified_lookup_using_namespace (tree name, tree scope,
return result->value != error_mark_node;
}
/* Helper function for lookup_name_fuzzy.
Traverse binding level LVL, looking for good name matches for NAME
(and BM). */
static void
consider_binding_level (tree name, best_match <tree, tree> &bm,
cp_binding_level *lvl, bool look_within_fields,
enum lookup_name_fuzzy_kind kind)
{
if (look_within_fields)
if (lvl->this_entity && TREE_CODE (lvl->this_entity) == RECORD_TYPE)
{
tree type = lvl->this_entity;
bool want_type_p = (kind == FUZZY_LOOKUP_TYPENAME);
tree best_matching_field
= lookup_member_fuzzy (type, name, want_type_p);
if (best_matching_field)
bm.consider (best_matching_field);
}
for (tree t = lvl->names; t; t = TREE_CHAIN (t))
{
/* Don't use bindings from implicitly declared functions,
as they were likely misspellings themselves. */
if (TREE_TYPE (t) == error_mark_node)
continue;
/* Skip anticipated decls of builtin functions. */
if (TREE_CODE (t) == FUNCTION_DECL
&& DECL_BUILT_IN (t)
&& DECL_ANTICIPATED (t))
continue;
if (DECL_NAME (t))
bm.consider (DECL_NAME (t));
}
}
/* Search for near-matches for NAME within the current bindings, and within
macro names, returning the best match as a const char *, or NULL if
no reasonable match is found. */
const char *
lookup_name_fuzzy (tree name, enum lookup_name_fuzzy_kind kind)
{
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
best_match <tree, tree> bm (name);
cp_binding_level *lvl;
for (lvl = scope_chain->class_bindings; lvl; lvl = lvl->level_chain)
consider_binding_level (name, bm, lvl, true, kind);
for (lvl = current_binding_level; lvl; lvl = lvl->level_chain)
consider_binding_level (name, bm, lvl, false, kind);
/* Consider macros: if the user misspelled a macro name e.g. "SOME_MACRO"
as:
x = SOME_OTHER_MACRO (y);
then "SOME_OTHER_MACRO" will survive to the frontend and show up
as a misspelled identifier.
Use the best distance so far so that a candidate is only set if
a macro is better than anything so far. This allows early rejection
(without calculating the edit distance) of macro names that must have
distance >= bm.get_best_distance (), and means that we only get a
non-NULL result for best_macro_match if it's better than any of
the identifiers already checked. */
best_macro_match bmm (name, bm.get_best_distance (), parse_in);
cpp_hashnode *best_macro = bmm.get_best_meaningful_candidate ();
/* If a macro is the closest so far to NAME, suggest it. */
if (best_macro)
return (const char *)best_macro->ident.str;
/* Try the "starts_decl_specifier_p" keywords to detect
"singed" vs "signed" typos. */
for (unsigned i = 0; i < num_c_common_reswords; i++)
{
const c_common_resword *resword = &c_common_reswords[i];
if (!cp_keyword_starts_decl_specifier_p (resword->rid))
continue;
tree resword_identifier = ridpointers [resword->rid];
if (!resword_identifier)
continue;
gcc_assert (TREE_CODE (resword_identifier) == IDENTIFIER_NODE);
bm.consider (resword_identifier);
}
/* See if we have a good suggesion for the user. */
tree best_id = bm.get_best_meaningful_candidate ();
if (best_id)
return IDENTIFIER_POINTER (best_id);
/* No meaningful suggestion available. */
return NULL;
}
/* Subroutine of outer_binding.
Returns TRUE if BINDING is a binding to a template parameter of

43
gcc/cp/parser.c
View File

@ -40,6 +40,7 @@ along with GCC; see the file COPYING3. If not see
#include "c-family/c-indentation.h"
#include "context.h"
#include "cp-cilkplus.h"
#include "gcc-rich-location.h"
/* The lexer. */
@ -937,15 +938,12 @@ cp_lexer_next_token_is_not_keyword (cp_lexer* lexer, enum rid keyword)
return cp_lexer_peek_token (lexer)->keyword != keyword;
}
/* Return true if the next token is a keyword for a decl-specifier. */
/* Return true if KEYWORD can start a decl-specifier. */
static bool
cp_lexer_next_token_is_decl_specifier_keyword (cp_lexer *lexer)
bool
cp_keyword_starts_decl_specifier_p (enum rid keyword)
{
cp_token *token;
token = cp_lexer_peek_token (lexer);
switch (token->keyword)
switch (keyword)
{
/* auto specifier: storage-class-specifier in C++,
simple-type-specifier in C++0x. */
@ -985,14 +983,25 @@ cp_lexer_next_token_is_decl_specifier_keyword (cp_lexer *lexer)
return true;
default:
if (token->keyword >= RID_FIRST_INT_N
&& token->keyword < RID_FIRST_INT_N + NUM_INT_N_ENTS
&& int_n_enabled_p[token->keyword - RID_FIRST_INT_N])
if (keyword >= RID_FIRST_INT_N
&& keyword < RID_FIRST_INT_N + NUM_INT_N_ENTS
&& int_n_enabled_p[keyword - RID_FIRST_INT_N])
return true;
return false;
}
}
/* Return true if the next token is a keyword for a decl-specifier. */
static bool
cp_lexer_next_token_is_decl_specifier_keyword (cp_lexer *lexer)
{
cp_token *token;
token = cp_lexer_peek_token (lexer);
return cp_keyword_starts_decl_specifier_p (token->keyword);
}
/* Returns TRUE iff the token T begins a decltype type. */
static bool
@ -3154,7 +3163,19 @@ cp_parser_diagnose_invalid_type_name (cp_parser *parser, tree id,
else if (!parser->scope)
{
/* Issue an error message. */
error_at (location, "%qE does not name a type", id);
const char *suggestion = NULL;
if (TREE_CODE (id) == IDENTIFIER_NODE)
suggestion = lookup_name_fuzzy (id, FUZZY_LOOKUP_TYPENAME);
if (suggestion)
{
gcc_rich_location richloc (location);
richloc.add_fixit_misspelled_id (location, suggestion);
error_at_rich_loc (&richloc,
"%qE does not name a type; did you mean %qs?",
id, suggestion);
}
else
error_at (location, "%qE does not name a type", id);
/* If we're in a template class, it's possible that the user was
referring to a type from a base class. For example:

1
gcc/cp/parser.h
View File

@ -420,5 +420,6 @@ extern void debug (vec<cp_token, va_gc> *ptr);
extern void cp_debug_parser (FILE *, cp_parser *);
extern void debug (cp_parser &ref);
extern void debug (cp_parser *ptr);
extern bool cp_keyword_starts_decl_specifier_p (enum rid keyword);
#endif /* GCC_CP_PARSER_H */

8
gcc/cp/search.c
View File

@ -1398,13 +1398,7 @@ lookup_field_fuzzy_info::fuzzy_lookup_fnfields (tree type)
void
lookup_field_fuzzy_info::fuzzy_lookup_field (tree type)
{
if (TREE_CODE (type) == TEMPLATE_TYPE_PARM
|| TREE_CODE (type) == BOUND_TEMPLATE_TEMPLATE_PARM
|| TREE_CODE (type) == TYPENAME_TYPE)
/* The TYPE_FIELDS of a TEMPLATE_TYPE_PARM and
BOUND_TEMPLATE_TEMPLATE_PARM are not fields at all;
instead TYPE_FIELDS is the TEMPLATE_PARM_INDEX.
The TYPE_FIELDS of TYPENAME_TYPE is its TYPENAME_TYPE_FULLNAME. */
if (!CLASS_TYPE_P (type))
return;
for (tree field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field))

11
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,14 @@
2016-07-20 David Malcolm <dmalcolm@redhat.com>
PR c/70339
PR c/71858
* g++.dg/spellcheck-identifiers.C: New test case, based on
gcc.dg/spellcheck-identifiers.c.
* g++.dg/spellcheck-identifiers-2.C: New test case, based on
gcc.dg/spellcheck-identifiers-2.c.
* g++.dg/spellcheck-typenames.C: New test case, based on
gcc.dg/spellcheck-typenames.c
2016-07-20 Jonathan Wakely <jwakely@redhat.com>
* g++.dg/cpp0x/nullptr35.C: Change expected result for catching as

43
gcc/testsuite/g++.dg/spellcheck-identifiers-2.C Normal file
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@ -0,0 +1,43 @@
/* PR c/71858 */
/* Make sure anticipated builtins are not considered before they are declared. */
/* { dg-do compile } */
/* { dg-options "-fdiagnostics-show-caret" } */
int sscafn (const char *, const char *, ...);
int
test_1 (const char *p)
{
int i;
return ssacnf (p, "%d", &i); /* { dg-error "10: .ssacnf. was not declared in this scope" } */
/* { dg-begin-multiline-output "" }
return ssacnf (p, "%d", &i);
^~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'sscafn'" "" { target *-*-* } 12 }
/* { dg-begin-multiline-output "" }
return ssacnf (p, "%d", &i);
^~~~~~
sscafn
{ dg-end-multiline-output "" } */
}
int scafn (const char *, ...);
int scanf (const char *, ...);
int
test_2 (void)
{
int i;
return sacnf ("%d", &i); /* { dg-error "10: .sacnf. was not declared in this scope" } */
/* { dg-begin-multiline-output "" }
return sacnf ("%d", &i);
^~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'scanf'" "" { target *-*-* } 32 }
/* { dg-begin-multiline-output "" }
return sacnf ("%d", &i);
^~~~~
scanf
{ dg-end-multiline-output "" } */
}

255
gcc/testsuite/g++.dg/spellcheck-identifiers.C Normal file
View File

@ -0,0 +1,255 @@
/* { dg-do compile } */
/* { dg-options "-fdiagnostics-show-caret" } */
typedef struct GtkWidget { int dummy; } GtkWidget;
extern void gtk_widget_show_all (GtkWidget *w);
void
test_1 (GtkWidget *w)
{
gtk_widget_showall (w); // { dg-error "3: 'gtk_widget_showall' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
gtk_widget_showall (w);
^~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "3: suggested alternative: 'gtk_widget_show_all'" "" { target *-*-* } 12 }
/* { dg-begin-multiline-output "" }
gtk_widget_showall (w);
^~~~~~~~~~~~~~~~~~
gtk_widget_show_all
{ dg-end-multiline-output "" } */
/* Ensure we don't try to suggest "gtk_widget_showall" for subsequent
corrections. */
gtk_widget_showall_ (w); // { dg-error "3: 'gtk_widget_showall_' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
gtk_widget_showall_ (w);
^~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "3: suggested alternative: 'gtk_widget_show_all'" "" { target *-*-* } 26 }
/* { dg-begin-multiline-output "" }
gtk_widget_showall_ (w);
^~~~~~~~~~~~~~~~~~~
gtk_widget_show_all
{ dg-end-multiline-output "" } */
GtkWidgetShowAll (w); // { dg-error "3: 'GtkWidgetShowAll' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
GtkWidgetShowAll (w);
^~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "3: suggested alternative: 'gtk_widget_show_all'" "" { target *-*-* } 38 }
/* { dg-begin-multiline-output "" }
GtkWidgetShowAll (w);
^~~~~~~~~~~~~~~~
gtk_widget_show_all
{ dg-end-multiline-output "" } */
}
int
test_2 (int param)
{
return parma * parma; // { dg-error "10: 'parma' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return parma * parma;
^~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'param'" "" { target *-*-* } 54 }
/* { dg-begin-multiline-output "" }
return parma * parma;
^~~~~
param
{ dg-end-multiline-output "" } */
}
#define MACRO(X) ((X))
int
test_3 (int i)
{
return MACRAME (i); // { dg-error "10: 'MACRAME' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return MACRAME (i);
^~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'MACRO'" "" { target *-*-* } 72 }
/* { dg-begin-multiline-output "" }
return MACRAME (i);
^~~~~~~
MACRO
{ dg-end-multiline-output "" } */
}
#define IDENTIFIER_POINTER(X) ((X))
int
test_4 (int node)
{
return IDENTIFIER_PTR (node); // { dg-error "10: 'IDENTIFIER_PTR' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return IDENTIFIER_PTR (node);
^~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'IDENTIFIER_POINTER'" "" { target *-*-* } 90 }
/* { dg-begin-multiline-output "" }
return IDENTIFIER_PTR (node);
^~~~~~~~~~~~~~
IDENTIFIER_POINTER
{ dg-end-multiline-output "" } */
}
int
test_5 (void)
{
return __LINE_; /* { dg-error "10: '__LINE_' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return __LINE_;
^~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: '__LINE__'" "" { target *-*-* } 107 }
/* { dg-begin-multiline-output "" }
return __LINE_;
^~~~~~~
__LINE__
{ dg-end-multiline-output "" } */
}
#define MAX_ITEMS 100
int array[MAX_ITEM]; // { dg-error "11: 'MAX_ITEM' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
int array[MAX_ITEM];
^~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "11: suggested alternative: 'MAX_ITEMS'" "" { target *-*-* } 121 }
/* { dg-begin-multiline-output "" }
int array[MAX_ITEM];
^~~~~~~~
MAX_ITEMS
{ dg-end-multiline-output "" } */
enum foo {
FOO_FIRST,
FOO_SECOND
};
int
test_6 (enum foo f)
{
switch (f)
{
case FOO_FURST: // { dg-error "10: 'FOO_FURST' was not declared in this scope" }
break;
/* { dg-begin-multiline-output "" }
case FOO_FURST:
^~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'FOO_FIRST'" "" { target *-*-* } 144 }
/* { dg-begin-multiline-output "" }
case FOO_FURST:
^~~~~~~~~
FOO_FIRST
{ dg-end-multiline-output "" } */
case FOO_SECCOND: // { dg-error "10: 'FOO_SECCOND' was not declared in this scope" }
break;
/* { dg-begin-multiline-output "" }
case FOO_SECCOND:
^~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'FOO_SECOND'" "" { target *-*-* } 157 }
/* { dg-begin-multiline-output "" }
case FOO_SECCOND:
^~~~~~~~~~~
FOO_SECOND
{ dg-end-multiline-output "" } */
default:
break;
}
}
int snprintf (char *, __SIZE_TYPE__, const char *, ...);
void
test_7 (int i, int j)
{
int buffer[100];
snprint (buffer, 100, "%i of %i", i, j); // { dg-error "3: 'snprint' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
snprint (buffer, 100, "%i of %i", i, j);
^~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "3: suggested alternative: 'snprintf'" "" { target *-*-* } 181 }
/* { dg-begin-multiline-output "" }
snprint (buffer, 100, "%i of %i", i, j);
^~~~~~~
snprintf
{ dg-end-multiline-output "" } */
}
int
test_8 ()
{
int local = 42;
return locale; // { dg-error "10: 'locale' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return locale;
^~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'local'" "" { target *-*-* } 199 }
/* { dg-begin-multiline-output "" }
return locale;
^~~~~~
local
{ dg-end-multiline-output "" } */
}
class base
{
public:
int test_method_1 ();
protected:
int m_foo;
};
class sub : public base
{
public:
int test_method_2 ();
};
int base::test_method_1 ()
{
return m_food; // { dg-error "10: 'm_food' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return m_food;
^~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'm_foo'" "" { target *-*-* } 229 }
/* { dg-begin-multiline-output "" }
return m_food;
^~~~~~
m_foo
{ dg-end-multiline-output "" } */
}
int sub::test_method_2 ()
{
return m_food; // { dg-error "10: 'm_food' was not declared in this scope" }
/* { dg-begin-multiline-output "" }
return m_food;
^~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "10: suggested alternative: 'm_foo'" "" { target *-*-* } 244 }
/* { dg-begin-multiline-output "" }
return m_food;
^~~~~~
m_foo
{ dg-end-multiline-output "" } */
}

84
gcc/testsuite/g++.dg/spellcheck-typenames.C Normal file
View File

@ -0,0 +1,84 @@
/* { dg-do compile } */
/* { dg-options "-fdiagnostics-show-caret" } */
void test_1 (signed char e);
/* PR c/70339. */
void test_2 (singed char e); // { dg-error "21: variable or field 'test_2' declared void" }
/* { dg-begin-multiline-output "" }
void test_2 (singed char e);
^~~~
{ dg-end-multiline-output "" } */
// { dg-message "14: 'singed' was not declared in this scope" "" { target *-*-* } 7 }
/* { dg-begin-multiline-output "" }
void test_2 (singed char e);
^~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "14: suggested alternative: 'signed'" "" { target *-*-* } 7 }
/* { dg-begin-multiline-output "" }
void test_2 (singed char e);
^~~~~~
signed
{ dg-end-multiline-output "" } */
void test_3 (car e); // { dg-error "14: variable or field 'test_3' declared void" }
/* { dg-begin-multiline-output "" }
void test_3 (car e);
^~~
{ dg-end-multiline-output "" } */
// { dg-message "14: 'car' was not declared in this scope" "" { target *-*-* } 24 }
// { dg-message "14: suggested alternative: 'char'" "" { target *-*-* } 24 }
/* { dg-begin-multiline-output "" }
void test_3 (car e);
^~~
char
{ dg-end-multiline-output "" } */
/* TODO: this one could be handled better. */
void test_4 (signed car e); // { dg-error "25: expected ',' or '...' before 'e'" }
/* { dg-begin-multiline-output "" }
void test_4 (signed car e);
^
{ dg-end-multiline-output "" } */
/* Verify that we handle misspelled typedef names. */
typedef struct something {} something_t;
some_thing_t test_5; // { dg-error "1: 'some_thing_t' does not name a type; did you mean 'something_t'?" }
/* { dg-begin-multiline-output "" }
some_thing_t test_5;
^~~~~~~~~~~~
something_t
{ dg-end-multiline-output "" } */
/* TODO: we don't yet handle misspelled struct names. */
struct some_thing test_6; // { dg-error "aggregate 'some_thing test_6' has incomplete type and cannot be defined" }
/* { dg-begin-multiline-output "" }
struct some_thing test_6;
^~~~~~
{ dg-end-multiline-output "" } */
typedef long int64_t;
int64 i; // { dg-error "1: 'int64' does not name a type; did you mean 'int64_t'?" }
/* { dg-begin-multiline-output "" }
int64 i;
^~~~~
int64_t
{ dg-end-multiline-output "" } */
/* Verify that gcc doesn't offer nonsensical suggestions. */
nonsensical_suggestion_t var; /* { dg-bogus "did you mean" } */
/* { dg-error "'nonsensical_suggestion_t' does not name a type" "" { target { *-*-* } } 72 } */
/* { dg-begin-multiline-output "" }
nonsensical_suggestion_t var;
^~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
singed char ch; // { dg-error "1: 'singed' does not name a type; did you mean 'signed'?" }
/* { dg-begin-multiline-output "" }
singed char ch;
^~~~~~
signed
{ dg-end-multiline-output "" } */