Actually, treating the !strict case like the strict case except for always
warning instead of error if outside of literals is simpler.
The following version does that. The only difference on the testcases is in
the
int f = a\N{abc});
cases where it emits different diagnostics.
2022-09-03 Jakub Jelinek <ja...@redhat.com>
libcpp/
* include/cpplib.h (struct cpp_options): Add cpp_warn_unicode member.
(enum cpp_warning_reason): Add CPP_W_UNICODE.
* init.cc (cpp_create_reader): Initialize cpp_warn_unicode.
* charset.cc (_cpp_valid_ucn): In possible identifier contexts, don't
handle \u{ or \N{ specially in -std=c* modes except -std=c++2{3,b}.
In possible identifier contexts, don't emit an error and punt
if \N isn't followed by {, or if \N{} surrounds some lower case
letters or _. In possible identifier contexts when not C++23, don't
emit an error but warning about unknown character names and treat as
separate tokens. When treating as separate tokens \u{ or \N{, emit
warnings.
gcc/
* doc/invoke.texi (-Wno-unicode): Document.
gcc/c-family/
* c.opt (Winvalid-utf8): Use ObjC instead of objC. Remove
" in comments" from description.
(Wunicode): New option.
gcc/testsuite/
* c-c++-common/cpp/delimited-escape-seq-4.c: New test.
* c-c++-common/cpp/delimited-escape-seq-5.c: New test.
* c-c++-common/cpp/delimited-escape-seq-6.c: New test.
* c-c++-common/cpp/delimited-escape-seq-7.c: New test.
* c-c++-common/cpp/named-universal-char-escape-5.c: New test.
* c-c++-common/cpp/named-universal-char-escape-6.c: New test.
* c-c++-common/cpp/named-universal-char-escape-7.c: New test.
* g++.dg/cpp23/named-universal-char-escape1.C: New test.
* g++.dg/cpp23/named-universal-char-escape2.C: New test.
--- libcpp/include/cpplib.h.jj 2022-09-03 09:35:41.465984642 +0200
+++ libcpp/include/cpplib.h 2022-09-03 11:30:57.250677870 +0200
@@ -565,6 +565,10 @@ struct cpp_options
2 if it should be a pedwarn. */
unsigned char cpp_warn_invalid_utf8;
+ /* True if libcpp should warn about invalid forms of delimited or named
+ escape sequences. */
+ bool cpp_warn_unicode;
+
/* True if -finput-charset= option has been used explicitly. */
bool cpp_input_charset_explicit;
@@ -675,7 +679,8 @@ enum cpp_warning_reason {
CPP_W_CXX20_COMPAT,
CPP_W_EXPANSION_TO_DEFINED,
CPP_W_BIDIRECTIONAL,
- CPP_W_INVALID_UTF8
+ CPP_W_INVALID_UTF8,
+ CPP_W_UNICODE
};
/* Callback for header lookup for HEADER, which is the name of a
--- libcpp/init.cc.jj 2022-09-01 09:47:23.729892618 +0200
+++ libcpp/init.cc 2022-09-03 11:19:10.954452329 +0200
@@ -228,6 +228,7 @@ cpp_create_reader (enum c_lang lang, cpp
CPP_OPTION (pfile, warn_date_time) = 0;
CPP_OPTION (pfile, cpp_warn_bidirectional) = bidirectional_unpaired;
CPP_OPTION (pfile, cpp_warn_invalid_utf8) = 0;
+ CPP_OPTION (pfile, cpp_warn_unicode) = 1;
CPP_OPTION (pfile, cpp_input_charset_explicit) = 0;
/* Default CPP arithmetic to something sensible for the host for the
--- libcpp/charset.cc.jj 2022-09-01 14:19:47.462235851 +0200
+++ libcpp/charset.cc 2022-09-03 12:42:41.800923600 +0200
@@ -1448,7 +1448,11 @@ _cpp_valid_ucn (cpp_reader *pfile, const
if (str[-1] == 'u')
{
length = 4;
- if (str < limit && *str == '{')
+ if (str < limit
+ && *str == '{'
+ && (!identifier_pos
+ || CPP_OPTION (pfile, delimited_escape_seqs)
+ || !CPP_OPTION (pfile, std)))
{
str++;
/* Magic value to indicate no digits seen. */
@@ -1462,8 +1466,22 @@ _cpp_valid_ucn (cpp_reader *pfile, const
else if (str[-1] == 'N')
{
length = 4;
+ if (identifier_pos
+ && !CPP_OPTION (pfile, delimited_escape_seqs)
+ && CPP_OPTION (pfile, std))
+ {
+ *cp = 0;
+ return false;
+ }
if (str == limit || *str != '{')
- cpp_error (pfile, CPP_DL_ERROR, "'\\N' not followed by '{'");
+ {
+ if (identifier_pos)
+ {
+ *cp = 0;
+ return false;
+ }
+ cpp_error (pfile, CPP_DL_ERROR, "'\\N' not followed by '{'");
+ }
else
{
str++;
@@ -1489,15 +1507,19 @@ _cpp_valid_ucn (cpp_reader *pfile, const
if (str < limit && *str == '}')
{
- if (name == str && identifier_pos)
+ if (identifier_pos && name == str)
{
+ cpp_warning (pfile, CPP_W_UNICODE,
+ "empty named universal character escape "
+ "sequence; treating it as separate tokens");
*cp = 0;
return false;
}
if (name == str)
cpp_error (pfile, CPP_DL_ERROR,
"empty named universal character escape sequence");
- else if (!CPP_OPTION (pfile, delimited_escape_seqs)
+ else if ((!identifier_pos || strict)
+ && !CPP_OPTION (pfile, delimited_escape_seqs)
&& CPP_OPTION (pfile, cpp_pedantic))
cpp_error (pfile, CPP_DL_PEDWARN,
"named universal character escapes are only valid "
@@ -1515,27 +1537,51 @@ _cpp_valid_ucn (cpp_reader *pfile, const
uname2c_tree, NULL);
if (result == (cppchar_t) -1)
{
- cpp_error (pfile, CPP_DL_ERROR,
- "\\N{%.*s} is not a valid universal "
- "character", (int) (str - name), name);
+ bool ret = true;
+ if (identifier_pos
+ && (!CPP_OPTION (pfile, delimited_escape_seqs)
+ || !strict))
+ ret = cpp_warning (pfile, CPP_W_UNICODE,
+ "\\N{%.*s} is not a valid "
+ "universal character; treating it "
+ "as separate tokens",
+ (int) (str - name), name);
+ else
+ cpp_error (pfile, CPP_DL_ERROR,
+ "\\N{%.*s} is not a valid universal "
+ "character", (int) (str - name), name);
/* Try to do a loose name lookup according to
Unicode loose matching rule UAX44-LM2. */
char canon_name[uname2c_max_name_len + 1];
result = _cpp_uname2c_uax44_lm2 ((const char *) name,
str - name, canon_name);
- if (result != (cppchar_t) -1)
+ if (result != (cppchar_t) -1 && ret)
cpp_error (pfile, CPP_DL_NOTE,
"did you mean \\N{%s}?", canon_name);
else
- result = 0x40;
+ result = 0xC0;
+ if (identifier_pos
+ && (!CPP_OPTION (pfile, delimited_escape_seqs)
+ || !strict))
+ {
+ *cp = 0;
+ return false;
+ }
}
}
str++;
extend_char_range (char_range, loc_reader);
}
else if (identifier_pos)
- length = 1;
+ {
+ cpp_warning (pfile, CPP_W_UNICODE,
+ "'\\N{' not terminated with '}' after %.*s; "
+ "treating it as separate tokens",
+ (int) (str - base), base);
+ *cp = 0;
+ return false;
+ }
else
{
cpp_error (pfile, CPP_DL_ERROR,
@@ -1584,12 +1630,17 @@ _cpp_valid_ucn (cpp_reader *pfile, const
}
while (--length);
- if (delimited
- && str < limit
- && *str == '}'
- && (length != 32 || !identifier_pos))
+ if (delimited && str < limit && *str == '}')
{
- if (length == 32)
+ if (length == 32 && identifier_pos)
+ {
+ cpp_warning (pfile, CPP_W_UNICODE,
+ "empty delimited escape sequence; "
+ "treating it as separate tokens");
+ *cp = 0;
+ return false;
+ }
+ else if (length == 32)
cpp_error (pfile, CPP_DL_ERROR,
"empty delimited escape sequence");
else if (!CPP_OPTION (pfile, delimited_escape_seqs)
@@ -1607,6 +1658,11 @@ _cpp_valid_ucn (cpp_reader *pfile, const
error message in that case. */
if (length && identifier_pos)
{
+ if (delimited)
+ cpp_warning (pfile, CPP_W_UNICODE,
+ "'\\u{' not terminated with '}' after %.*s; "
+ "treating it as separate tokens",
+ (int) (str - base), base);
*cp = 0;
return false;
}
--- gcc/doc/invoke.texi.jj 2022-09-03 09:35:40.966991672 +0200
+++ gcc/doc/invoke.texi 2022-09-03 11:39:03.875914845 +0200
@@ -365,7 +365,7 @@ Objective-C and Objective-C++ Dialects}.
-Winfinite-recursion @gol
-Winit-self -Winline -Wno-int-conversion -Wint-in-bool-context @gol
-Wno-int-to-pointer-cast -Wno-invalid-memory-model @gol
--Winvalid-pch -Winvalid-utf8 -Wjump-misses-init @gol
+-Winvalid-pch -Winvalid-utf8 -Wno-unicode -Wjump-misses-init @gol
-Wlarger-than=@var{byte-size} -Wlogical-not-parentheses -Wlogical-op @gol
-Wlong-long -Wno-lto-type-mismatch -Wmain -Wmaybe-uninitialized @gol
-Wmemset-elt-size -Wmemset-transposed-args @gol
@@ -9577,6 +9577,12 @@ Warn if an invalid UTF-8 character is fo
This warning is on by default for C++23 if @option{-finput-charset=UTF-8}
is used and turned into error with @option{-pedantic-errors}.
+@item -Wno-unicode
+@opindex Wunicode
+@opindex Wno-unicode
+Don't diagnose invalid forms of delimited or named escape sequences which are
+treated as separate tokens. @option{Wunicode} is enabled by default.
+
@item -Wlong-long
@opindex Wlong-long
@opindex Wno-long-long
--- gcc/c-family/c.opt.jj 2022-09-03 09:35:40.206002393 +0200
+++ gcc/c-family/c.opt 2022-09-03 11:17:04.529201926 +0200
@@ -822,8 +822,8 @@ C ObjC C++ ObjC++ CPP(warn_invalid_pch)
Warn about PCH files that are found but not used.
Winvalid-utf8
-C objC C++ ObjC++ CPP(cpp_warn_invalid_utf8) CppReason(CPP_W_INVALID_UTF8)
Var(warn_invalid_utf8) Init(0) Warning
-Warn about invalid UTF-8 characters in comments.
+C ObjC C++ ObjC++ CPP(cpp_warn_invalid_utf8) CppReason(CPP_W_INVALID_UTF8)
Var(warn_invalid_utf8) Init(0) Warning
+Warn about invalid UTF-8 characters.
Wjump-misses-init
C ObjC Var(warn_jump_misses_init) Warning LangEnabledby(C ObjC,Wc++-compat)
@@ -1345,6 +1345,10 @@ Wundef
C ObjC C++ ObjC++ CPP(warn_undef) CppReason(CPP_W_UNDEF) Var(cpp_warn_undef)
Init(0) Warning
Warn if an undefined macro is used in an #if directive.
+Wunicode
+C ObjC C++ ObjC++ CPP(cpp_warn_unicode) CppReason(CPP_W_UNICODE)
Var(warn_unicode) Init(1) Warning
+Warn about invalid forms of delimited or named escape sequences.
+
Wuninitialized
C ObjC C++ ObjC++ LTO LangEnabledBy(C ObjC C++ ObjC++ LTO,Wall)
;
--- gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-4.c.jj 2022-09-03
11:13:37.570068845 +0200
+++ gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-4.c 2022-09-03
11:56:52.818054420 +0200
@@ -0,0 +1,13 @@
+/* P2290R3 - Delimited escape sequences */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=gnu99 -Wno-c++-compat" { target c } } */
+/* { dg-options "-std=gnu++20" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\u{}); /* { dg-warning "empty delimited escape sequence;
treating it as separate tokens" } */
+int c = a\u{); /* { dg-warning "'\\\\u\\\{' not terminated with '\\\}'
after \\\\u\\\{; treating it as separate tokens" } */
+int d = a\u{12XYZ}); /* { dg-warning "'\\\\u\\\{' not terminated with '\\\}'
after \\\\u\\\{12; treating it as separate tokens" } */
+int e = a\u123);
+int f = a\U1234567);
--- gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-5.c.jj 2022-09-03
11:13:37.570068845 +0200
+++ gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-5.c 2022-09-03
12:01:35.618124647 +0200
@@ -0,0 +1,13 @@
+/* P2290R3 - Delimited escape sequences */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=c17 -Wno-c++-compat" { target c } } */
+/* { dg-options "-std=c++23" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\u{}); /* { dg-warning "empty delimited escape sequence; treating it
as separate tokens" "" { target c++23 } } */
+int c = a\u{); /* { dg-warning "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{; treating it as separate tokens" "" { target c++23 } } */
+int d = a\u{12XYZ}); /* { dg-warning "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{12; treating it as separate tokens" "" { target c++23 } } */
+int e = a\u123);
+int f = a\U1234567);
--- gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-6.c.jj 2022-09-03
11:59:36.573778876 +0200
+++ gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-6.c 2022-09-03
11:59:55.808511591 +0200
@@ -0,0 +1,13 @@
+/* P2290R3 - Delimited escape sequences */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=gnu99 -Wno-c++-compat -Wno-unicode" { target c } } */
+/* { dg-options "-std=gnu++20 -Wno-unicode" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\u{}); /* { dg-bogus "empty delimited escape sequence;
treating it as separate tokens" } */
+int c = a\u{); /* { dg-bogus "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{; treating it as separate tokens" } */
+int d = a\u{12XYZ}); /* { dg-bogus "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{12; treating it as separate tokens" } */
+int e = a\u123);
+int f = a\U1234567);
--- gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-7.c.jj 2022-09-03
12:01:48.958939255 +0200
+++ gcc/testsuite/c-c++-common/cpp/delimited-escape-seq-7.c 2022-09-03
12:02:16.765552854 +0200
@@ -0,0 +1,13 @@
+/* P2290R3 - Delimited escape sequences */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=c17 -Wno-c++-compat -Wno-unicode" { target c } } */
+/* { dg-options "-std=c++23 -Wno-unicode" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\u{}); /* { dg-bogus "empty delimited escape sequence;
treating it as separate tokens" } */
+int c = a\u{); /* { dg-bogus "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{; treating it as separate tokens" } */
+int d = a\u{12XYZ}); /* { dg-bogus "'\\\\u\\\{' not terminated with '\\\}' after
\\\\u\\\{12; treating it as separate tokens" } */
+int e = a\u123);
+int f = a\U1234567);
--- gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-5.c.jj
2022-09-03 11:13:37.570068845 +0200
+++ gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-5.c
2022-09-03 12:45:18.968747909 +0200
@@ -0,0 +1,17 @@
+/* P2071R2 - Named universal character escapes */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=gnu99 -Wno-c++-compat" { target c } } */
+/* { dg-options "-std=gnu++20" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\N{}); /* { dg-warning "empty named
universal character escape sequence; treating it as separate tokens" } */
+int c = a\N{); /* { dg-warning "'\\\\N\\\{' not terminated
with '\\\}' after \\\\N\\\{; treating it as separate tokens" } */
+int d = a\N);
+int e = a\NARG);
+int f = a\N{abc}); /* { dg-warning "\\\\N\\\{abc\\\} is
not a valid universal character; treating it as separate tokens" } */
+int g = a\N{ABC.123}); /* { dg-warning "'\\\\N\\\{' not
terminated with '\\\}' after \\\\N\\\{ABC; treating it as separate tokens" } */
+int h = a\N{NON-EXISTENT CHAR}); /* { dg-warning "\\\\N\\\{NON-EXISTENT
CHAR\\\} is not a valid universal character; treating it as separate tokens" } */
+int i = a\N{Latin_Small_Letter_A_With_Acute}); /* { dg-warning
"\\\\N\\\{Latin_Small_Letter_A_With_Acute\\\} is not a valid universal character;
treating it as separate tokens" } */
+ /* { dg-message "did you mean \\\\N\\\{LATIN SMALL
LETTER A WITH ACUTE\\\}\\?" "" { target *-*-* } .-1 } */
--- gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-6.c.jj
2022-09-03 11:13:37.570068845 +0200
+++ gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-6.c
2022-09-03 11:44:34.558316155 +0200
@@ -0,0 +1,17 @@
+/* P2071R2 - Named universal character escapes */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=c17 -Wno-c++-compat" { target c } } */
+/* { dg-options "-std=c++20" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\N{});
+int c = a\N{);
+int d = a\N);
+int e = a\NARG);
+int f = a\N{abc});
+int g = a\N{ABC.123});
+int h = a\N{NON-EXISTENT CHAR}); /* { dg-bogus "is not a valid universal
character" } */
+int i = a\N{Latin_Small_Letter_A_With_Acute});
+int j = a\N{LATIN SMALL LETTER A WITH ACUTE});
--- gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-7.c.jj
2022-09-03 12:18:31.296022384 +0200
+++ gcc/testsuite/c-c++-common/cpp/named-universal-char-escape-7.c
2022-09-03 12:45:57.663212248 +0200
@@ -0,0 +1,17 @@
+/* P2071R2 - Named universal character escapes */
+/* { dg-do compile } */
+/* { dg-require-effective-target wchar } */
+/* { dg-options "-std=gnu99 -Wno-c++-compat -Wno-unicode" { target c } } */
+/* { dg-options "-std=gnu++20 -Wno-unicode" { target c++ } } */
+
+#define z(x) 0
+#define a z(
+int b = a\N{}); /* { dg-bogus "empty named universal
character escape sequence; treating it as separate tokens" } */
+int c = a\N{); /* { dg-bogus "'\\\\N\\\{' not terminated
with '\\\}' after \\\\N\\\{; treating it as separate tokens" } */
+int d = a\N);
+int e = a\NARG);
+int f = a\N{abc}); /* { dg-bogus "\\\\N\\\{abc\\\} is
not a valid universal character; treating it as separate tokens" } */
+int g = a\N{ABC.123}); /* { dg-bogus "'\\\\N\\\{' not
terminated with '\\\}' after \\\\N\\\{ABC; treating it as separate tokens" } */
+int h = a\N{NON-EXISTENT CHAR}); /* { dg-bogus "\\\\N\\\{NON-EXISTENT
CHAR\\\} is not a valid universal character; treating it as separate tokens" } */
+int i = a\N{Latin_Small_Letter_A_With_Acute}); /* { dg-bogus
"\\\\N\\\{Latin_Small_Letter_A_With_Acute\\\} is not a valid universal character;
treating it as separate tokens" } */
+ /* { dg-bogus "did you mean \\\\N\\\{LATIN SMALL
LETTER A WITH ACUTE\\\}\\?" "" { target *-*-* } .-1 } */
--- gcc/testsuite/g++.dg/cpp23/named-universal-char-escape1.C.jj
2022-09-03 11:13:37.571068831 +0200
+++ gcc/testsuite/g++.dg/cpp23/named-universal-char-escape1.C 2022-09-03
12:44:03.893787182 +0200
@@ -0,0 +1,16 @@
+// P2071R2 - Named universal character escapes
+// { dg-do compile }
+// { dg-require-effective-target wchar }
+
+#define z(x) 0
+#define a z(
+int b = a\N{}); // { dg-warning "empty named universal
character escape sequence; treating it as separate tokens" "" { target c++23 } }
+int c = a\N{); // { dg-warning "'\\\\N\\\{' not terminated with
'\\\}' after \\\\N\\\{; treating it as separate tokens" "" { target c++23 } }
+int d = a\N);
+int e = a\NARG);
+int f = a\N{abc}); // { dg-warning "\\\\N\\\{abc\\\} is not a valid
universal character; treating it as separate tokens" "" { target c++23 } }
+int g = a\N{ABC.123}); // { dg-warning "'\\\\N\\\{' not terminated with
'\\\}' after \\\\N\\\{ABC; treating it as separate tokens" "" { target c++23 } }
+int h = a\N{NON-EXISTENT CHAR}); // { dg-error "is not a valid universal
character" "" { target c++23 } }
+ // { dg-error "was not declared in this scope"
"" { target c++23 } .-1 }
+int i = a\N{Latin_Small_Letter_A_With_Acute}); // { dg-warning
"\\\\N\\\{Latin_Small_Letter_A_With_Acute\\\} is not a valid universal character; treating it
as separate tokens" "" { target c++23 } }
+ // { dg-message "did you mean \\\\N\\\{LATIN SMALL
LETTER A WITH ACUTE\\\}\\?" "" { target c++23 } .-1 }
--- gcc/testsuite/g++.dg/cpp23/named-universal-char-escape2.C.jj
2022-09-03 11:13:37.571068831 +0200
+++ gcc/testsuite/g++.dg/cpp23/named-universal-char-escape2.C 2022-09-03
12:44:31.723401937 +0200
@@ -0,0 +1,18 @@
+// P2071R2 - Named universal character escapes
+// { dg-do compile }
+// { dg-require-effective-target wchar }
+// { dg-options "" }
+
+#define z(x) 0
+#define a z(
+int b = a\N{}); // { dg-warning "empty named
universal character escape sequence; treating it as separate tokens" }
+int c = a\N{); // { dg-warning "'\\\\N\\\{' not terminated
with '\\\}' after \\\\N\\\{; treating it as separate tokens" }
+int d = a\N);
+int e = a\NARG);
+int f = a\N{abc}); // { dg-warning "\\\\N\\\{abc\\\} is not a
valid universal character; treating it as separate tokens" }
+int g = a\N{ABC.123}); // { dg-warning "'\\\\N\\\{' not terminated
with '\\\}' after \\\\N\\\{ABC; treating it as separate tokens" }
+int h = a\N{NON-EXISTENT CHAR}); // { dg-error "is not a valid universal
character" "" { target c++23 } }
+ // { dg-error "was not declared in this scope"
"" { target c++23 } .-1 }
+ // { dg-warning "\\\\N\\\{NON-EXISTENT CHAR\\\} is not
a valid universal character; treating it as separate tokens" "" { target c++20_down
} .-2 }
+int i = a\N{Latin_Small_Letter_A_With_Acute}); // { dg-warning
"\\\\N\\\{Latin_Small_Letter_A_With_Acute\\\} is not a valid universal character;
treating it as separate tokens" }
+ // { dg-message "did you mean \\\\N\\\{LATIN SMALL
LETTER A WITH ACUTE\\\}\\?" "" { target *-*-* } .-1 }
Jakub
