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Corentin Jabot 304e974694 [Clang] Correctly handle $, @, and ` when represented as UCN 
This covers
 * P2558R2 (C++, wg21.link/P2558)
 * N2701 (C, https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2701.htm)
 * N3124 (C, https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3124.pdf)

This patch
 * Disallow representing $ as a UCN in all language mode, which did not
   properly work (see GH62133), and which in made ill-formed in
   C++ and C by P2558 and N3124 respectively
 * Allow a UCN for any character in C2X, in string and character
   literals

Fixes #62133

Reviewed By: #clang-language-wg, tahonermann

Differential Revision: https://reviews.llvm.org/D153621
2023-07-12 08:03:23 +02:00
..
Inputs
Reland [clang] Canonicalize system headers in dependency file when -canonical-prefixes
2023-05-01 12:44:52 -07:00
_Pragma-dependency2.c
…
_Pragma-dependency.c
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_Pragma-in-macro-arg.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
_Pragma-in-macro-arg.cpp
…
_Pragma-location.c
…
_Pragma-newline.c
…
_Pragma-physloc.c
…
_Pragma.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
aarch64_asm_flag_output.c
[AArch64][InlineAsm]Add Clang support for flag output constraints
2023-04-27 09:39:08 -07:00
aarch64-target-features.c
[Clang][AArch64] Implement ACLE feature macro for FEAT_LRCPC3
2023-07-07 12:33:34 +01:00
aix-vec_extabi.c
…
annotate_in_macro_arg.c
…
arm64_32.c
…
arm64e.c
…
arm-acle-6.4.c
…
arm-acle-6.5.c
…
arm-pic-predefines.c
…
arm-target-features.c
[AArch64][ARM] add Armv8.9-a/Armv9.4-a identifier support
2022-11-16 10:20:14 +00:00
assembler-with-cpp.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
avr-atmega328p.c
[AVR][Clang] Implement __AVR_HAVE_*__ macros
2022-11-23 01:21:09 +01:00
avr-attiny104.c
[AVR][Clang] Implement __AVR_HAVE_*__ macros
2022-11-23 01:21:09 +01:00
avr-common.c
…
bigoutput.c
…
bpf-predefined-macros.c
…
builtin_line.c
…
c2x.c
…
c17.c
…
c90.c
…
c99-6_10_3_3_p4.c
…
c99-6_10_3_4_p5.c
…
c99-6_10_3_4_p6.c
…
c99-6_10_3_4_p7.c
…
c99-6_10_3_4_p9.c
…
canonical-system-headers.c
Reland [clang] Canonicalize system headers in dependency file when -canonical-prefixes
2023-05-01 12:44:52 -07:00
clang_headers.c
…
comment_save_if.c
…
comment_save_macro.c
[Clang] Fix how ReadMacroParameterList handles comments in macro parameter-list when in -CC mode
2023-03-30 13:37:21 -07:00
comment_save.c
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csky-target-features.c
…
cuda-approx-transcendentals.cu
…
cuda-macos-includes.cu
…
cuda-preprocess.cu
…
cuda-types.cu
[X86][clang] Lift _BitInt() supported max width.
2022-12-06 11:02:27 +08:00
cxx_and.cpp
…
cxx_bitand.cpp
…
cxx_bitor.cpp
…
cxx_compl.cpp
…
cxx_not_eq.cpp
…
cxx_not.cpp
…
cxx_oper_keyword_ms_compat.cpp
…
cxx_oper_keyword.cpp
…
cxx_oper_spelling.cpp
…
cxx_or.cpp
…
cxx_true.cpp
…
cxx_xor.cpp
…
dependencies-and-pp.c
…
directive-invalid.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
directives_asm.S
Use explicit target in clang/test/Preprocessor/directives_asm.S
2023-03-07 18:06:41 +00:00
disabled-cond-diags2.c
…
disabled-cond-diags.c
…
dump_import.h
…
dump_import.m
…
dump_include.c
…
dump_include.h
…
dump_macros.c
…
dump-macros-spacing.c
…
dump-macros-undef.c
…
dump-options.c
…
dumptokens_phyloc.c
…
elfiamcu-predefines.c
…
elifdef.c
…
empty_file_to_include.h
…
empty_va_arg.cpp
…
expr_comma.c
…
expr_define_expansion.c
…
expr_invalid_tok.c
…
expr_liveness.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
expr_multichar.c
…
expr_usual_conversions.c
…
ext-pp-directive.c
[clang] Use -std=c++23 instead of -std=c++2b
2023-05-04 19:19:52 +02:00
extension-warning.c
…
feature_tests.c
[Clang][clang-cl] Implement __builtin_FUNCSIG
2023-05-19 12:02:44 -04:00
feature_tests.cpp
[Clang][clang-cl] Implement __builtin_FUNCSIG
2023-05-19 12:02:44 -04:00
file_name_macro.c
…
file_test_windows.c
…
file_test.c
…
file_to_include.h
…
first-line-indent.c
…
flt_eval_macro.cpp
Revert "Currently the control of the eval-method is mixed with fast-math."
2023-03-10 14:44:06 -05:00
function_macro_file.c
…
function_macro_file.h
…
has_attribute_errors.cpp
…
has_attribute.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
has_attribute.cpp
…
has_c_attribute.c
Correct the __has_c_attribute value for fallthrough
2022-09-13 11:08:58 -04:00
has_c_attribute.cpp
…
has_include.c
…
hash_builtin.cpp
…
hash_line.c
…
hash_space.c
…
header_is_main_file.c
…
header_lookup1.c
…
header-search-crash.c
[clang][Lexer] Fix crash/assert clang::HeaderSearch::search_dir_nth
2023-03-16 02:19:11 -07:00
headermap-rel2.c
…
headermap-rel.c
…
hexagon-predefines.c
[Hexagon] Add clang flags for v71, v71t, v73
2022-11-18 09:39:47 -08:00
hip-host-cpu-macros.cu
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if_warning.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
ifdef-recover.c
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ignore-pragmas.c
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import_self.c
…
include-cycle.c
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include-directive1.c
…
include-directive2.c
…
include-directive3.c
…
include-header-file-and-dir.c
…
include-header-missing-in-framework-with-headermap.c
…
include-header-missing-in-framework.c
…
include-leading-nonalpha-no-suggest.c
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include-likely-typo.c
…
include-macros.c
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include-next.c
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include-nonalpha-no-crash.c
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indent_macro.c
…
init-aarch64.c
[clang] Add __builtin_isfpclass
2023-06-18 22:53:32 +07:00
init-arm.c
[test] Replace aarch64-*-eabi with aarch64
2023-06-29 09:06:00 +01:00
init-csky.c
…
init-loongarch.c
[LoongArch] Define __GCC_HAVE_SYNC_COMPARE_AND_SWAP macros
2023-01-05 20:21:22 -05:00
init-mips.c
…
init-ppc64.c
[PPC] Undefine __ppc64__ to match GCC
2022-11-22 17:01:39 -08:00
init-ppc.c
[clang][PowerPC] Remove remaining Darwin support
2023-03-28 17:12:49 -04:00
init-s390x.c
[SystemZ][z/OS] Add required options/macro/etc for z/os compilation step
2023-06-30 08:06:12 -04:00
init-v7k-compat.c
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init-ve.c
[clang] Don't define predefined macros multiple times
2023-05-24 17:28:41 +01:00
init-x86.c
[Clang][MinGW][cygwin] Fix __declspec with -fdeclspec enabled
2022-10-03 10:58:45 +03:00
init.c
[clang] Add __builtin_isfpclass
2023-06-18 22:53:32 +07:00
invalid-__has_warning1.c
…
invalid-__has_warning2.c
…
is_target_arm64.c
…
is_target_arm.c
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is_target_environment_version.c
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is_target_os_darwin.c
…
is_target_unknown_environment.c
[clang][pp] only __is_target_environment(unknown) should match unknown target triple environment
2022-11-02 13:49:04 -07:00
is_target_unknown.c
[clang] Add __is_target_variant_{os,environment} builtins
2022-08-26 18:20:06 -04:00
is_target_variant.c
[clang] Add __is_target_variant_{os,environment} builtins
2022-08-26 18:20:06 -04:00
is_target.c
…
iwithprefix.c
…
lang-std-sie.cpp
Add explicit tests for the PS4/PS5 C/C++ standards version defaults.
2022-09-20 11:31:38 -07:00
lang-std.cpp
[PS4/PS5] Canonicalize tests to use 'target=.*-(ps4|ps5)'
2022-12-01 07:21:07 -08:00
line-directive-output.c
…
line-directive-system-headers.c
…
line-directive.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
llvm-rc.rc
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llvm-windres.rc
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macho-embedded-predefines.c
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macro_arg_directive.c
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macro_arg_directive.h
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macro_arg_empty.c
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macro_arg_keyword.c
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macro_arg_slocentry_merge.c
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macro_arg_slocentry_merge.h
…
macro_backslash.c
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macro_disable.c
…
macro_expand_empty.c
…
macro_expand.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
macro_expandloc.c
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macro_fn_comma_swallow2.c
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macro_fn_comma_swallow.c
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macro_fn_disable_expand.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
macro_fn_lparen_scan2.c
…
macro_fn_lparen_scan.c
…
macro_fn_placemarker.c
…
macro_fn_preexpand.c
…
macro_fn_varargs_iso.c
…
macro_fn_varargs_named.c
…
macro_fn.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
macro_misc.c
…
macro_not_define.c
…
macro_paste_bad.c
…
macro_paste_bcpl_comment.c
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macro_paste_c_block_comment.c
…
macro_paste_commaext.c
…
macro_paste_empty.c
…
macro_paste_hard.c
…
macro_paste_hashhash.c
…
macro_paste_identifier_error.c
…
macro_paste_msextensions.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
macro_paste_none.c
…
macro_paste_simple.c
…
macro_paste_spacing2.c
…
macro_paste_spacing.c
…
macro_raw_string.cpp
…
macro_redefined.c
…
macro_redefined.S
[Lex] Use line markers in preprocessed assembly predefines file
2023-03-07 16:20:43 +00:00
macro_rescan2.c
…
macro_rescan_varargs.c
…
macro_rescan.c
…
macro_rparen_scan2.c
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macro_rparen_scan.c
…
macro_space.c
…
macro_undef.c
…
macro_vaopt_check.cpp
[clang] Use -std=c++23 instead of -std=c++2b
2023-05-04 19:19:52 +02:00
macro_vaopt_expand.cpp
…
macro_vaopt_p1042r1.cpp
[Clang] Fix __VA_OPT__ implementation so that it treats the concatenation of a non-placemaker token and placemaker token as a non-placemaker token
2023-02-17 14:57:32 -08:00
macro_variadic.cl
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macro_with_initializer_list.cpp
…
macro-multiline.c
…
macro-reserved-cxx11.cpp
…
macro-reserved-ms.c
…
macro-reserved.c
[Lex] Only warn on defining or undefining language-defined builtins
2023-06-01 17:37:50 +01:00
macro-reserved.cpp
[Lex] Warn when defining or undefining any builtin macro
2023-05-25 11:55:44 +01:00
mi_opt2.c
…
mi_opt2.h
…
mi_opt.c
…
mi_opt.h
…
microsoft-ext.c
…
microsoft-header-search-fail.c
…
microsoft-header-search.c
…
microsoft-import.c
…
minimize-whitespace-messages.c
…
minimize-whitespace.c
…
missing-include-range-check.h
…
missing-system-header.c
…
missing-system-header.h
…
mmx.c
…
multiple-inclusion-opt.cpp
Keep multiple-include optimization for null directives
2023-04-27 13:44:11 -04:00
multiple-inclusion-opt.h
Keep multiple-include optimization for null directives
2023-04-27 13:44:11 -04:00
non_fragile_feature1.m
…
non_fragile_feature.m
…
nonportable-include-with-hmap.c
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objc-pp.m
…
ohos.c
[LLVM][OHOS] Clang toolchain and targets
2023-03-20 12:53:24 +03:00
openmp-macro-expansion.c
…
optimize.c
…
output_paste_avoid.cpp
…
overflow.c
…
pic.c
…
pp-modules.c
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pp-modules.h
…
pp-record.c
…
pp-record.h
…
pr2086.c
…
pr2086.h
…
pr13851.c
…
pr19649-signed-wchar_t.c
…
pr19649-unsigned-wchar_t.c
…
pragma_assume_nonnull.c
…
pragma_diagnostic_output.c
…
pragma_diagnostic_sections.cpp
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
pragma_diagnostic.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
pragma_microsoft.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
pragma_microsoft.cpp
…
pragma_module.c
…
pragma_poison.c
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pragma_sysheader.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
pragma_unknown.c
…
pragma-captured.c
…
pragma-comment-elf.c
…
pragma-missing-string-token.c
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pragma-pushpop-macro.c
…
pragma.c
…
predefined-arch-macros-x86.c
…
predefined-arch-macros.c
[NFC] Add missing cpu tests in predefined-arch-macros.c
2023-06-29 13:30:13 +08:00
predefined-exceptions.m
…
predefined-macros-hlsl.hlsl
[HLSL] Restrict to supported targets
2022-09-02 13:36:23 -05:00
predefined-macros-no-warnings.c
[clang] Don't define predefined macros multiple times
2023-05-24 17:28:41 +01:00
predefined-macros.c
[mips][clang] Do not define __GCC_HAVE_SYNC_COMPARE_AND_SWAP macros for MIPS-I
2023-01-12 09:08:05 -05:00
predefined-nullability.c
…
predefined-win-macros.c
[clang] Use -std=c++23 instead of -std=c++2b
2023-05-04 19:19:52 +02:00
print_empty_include.c
…
print_empty_include.h
…
print_line_count.c
…
print_line_empty_file.c
…
print_line_include.c
…
print_line_include.h
…
print_line_track.c
…
print-assembler.s
…
print-header-json.c
Remove slash in check string to fix the test that is failng on windows
2022-12-07 16:17:29 -08:00
print-pragma-microsoft.c
…
pushable-diagnostics.c
…
riscv-cmodel.c
…
riscv-target-features.c
[RISCV][MC] MC layer support for the experimental zacas extension
2023-07-10 08:26:31 +01:00
search-path-usage.m
…
skip-empty-lines.c
…
skipping_unclean.c
…
SOURCE_DATE_EPOCH.c
[clang] Move getenv call for SOURCE_DATE_EPOCH out of frontend NFC
2022-10-26 12:42:56 -07:00
static_assert-already-defined.c
…
static_assert.c
…
stdint.c
…
stringize_misc.c
…
stringize_skipped.c
…
stringize_space.c
…
suggest-typoed-directive.c
[clang] Use -std=c++23 instead of -std=c++2b
2023-05-04 19:19:52 +02:00
suggest-typoed-directive.S
…
sycl-macro.cpp
…
sysroot-prefix.c
…
traditional-cpp.c
…
ucn-allowed-chars.c
[Clang] Correctly handle $, @, and ` when represented as UCN
2023-07-12 08:03:23 +02:00
ucn-pp-identifier.c
[Clang] Correctly handle $, @, and ` when represented as UCN
2023-07-12 08:03:23 +02:00
undef-error.c
…
undef-x86.c
[Lex] Only warn on defining or undefining language-defined builtins
2023-06-01 17:37:50 +01:00
unterminated.c
…
unwind-tables.c
…
user_defined_system_framework.c
…
utf8-allowed-chars.c
…
warn-disabled-macro-expansion.c
…
warn-macro-undef.c
…
warn-macro-unused.c
Remove rdar links; NFC
2023-07-07 08:41:11 -04:00
warn-macro-unused.h
…
warning_tests.c
…
wasm-target-features.c
…
wchar_t.c
…
Weverything_pragma.c
…
whitespace-ms-extensions.c
…
woa-defaults.c
…
woa-wchar_t.c
…
x86_amx_target_features.c
[clang] Change AMX macros to match names from GCC
2023-02-03 07:00:16 -07:00
x86_asm_flag_output.c
…
x86_seg_fs_gs.c
…
x86_target_features.c
[X86] Add AMX_COMPLEX to Graniterapids
2023-04-06 13:19:44 +08:00