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release/21.x: [clang-format] Handle C digit separators (#158418) #158512

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Merged
merged 1 commit into from
Sep 23, 2025
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release/21.x: [clang-format] Handle C digit separators (#158418) #158512

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1 change: 1 addition & 0 deletions clang/lib/Format/Format.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4043,6 +4043,7 @@ LangOptions getFormattingLangOpts(const FormatStyle &Style) {
switch (Style.Language) {
case FormatStyle::LK_C:
LangOpts.C11 = 1;
LangOpts.C23 = 1;
break;
case FormatStyle::LK_Cpp:
case FormatStyle::LK_ObjC:
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7 changes: 7 additions & 0 deletions clang/unittests/Format/TokenAnnotatorTest.cpp
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Expand Up @@ -4097,6 +4097,13 @@ TEST_F(TokenAnnotatorTest, UTF8StringLiteral) {
EXPECT_TOKEN(Tokens[1], tok::utf8_string_literal, TT_Unknown);
}

TEST_F(TokenAnnotatorTest, C23DigitSeparator) {
auto Tokens = annotate("return 1'000;", getLLVMStyle(FormatStyle::LK_C));
ASSERT_EQ(Tokens.size(), 4u) << Tokens;
EXPECT_EQ(Tokens[1]->TokenText, "1'000");
EXPECT_TOKEN(Tokens[2], tok::semi, TT_Unknown);
}

TEST_F(TokenAnnotatorTest, IdentifierPackage) {
auto Tokens = annotate("auto package;");
ASSERT_EQ(Tokens.size(), 4u) << Tokens;
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