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[clang-format] Fix a bug in formatting goto labels in macros #92494
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@llvm/pr-subscribers-clang-format Author: Owen Pan (owenca) ChangesFixes #92300. Full diff: https://github.com/llvm/llvm-project/pull/92494.diff 2 Files Affected:
diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index b15a87327240b..3dd10f6bd2b31 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -1189,12 +1189,6 @@ void UnwrappedLineParser::parsePPDefine() {
return;
}
- if (FormatTok->is(tok::identifier) &&
- Tokens->peekNextToken()->is(tok::colon)) {
- nextToken();
- nextToken();
- }
-
// Errors during a preprocessor directive can only affect the layout of the
// preprocessor directive, and thus we ignore them. An alternative approach
// would be to use the same approach we use on the file level (no
@@ -1681,7 +1675,8 @@ void UnwrappedLineParser::parseStructuralElement(
if (!Style.isJavaScript() && !Style.isVerilog() && !Style.isTableGen() &&
Tokens->peekNextToken()->is(tok::colon) && !Line->MustBeDeclaration) {
nextToken();
- Line->Tokens.begin()->Tok->MustBreakBefore = true;
+ if (!Line->InMacroBody || CurrentLines->size() > 1)
+ Line->Tokens.begin()->Tok->MustBreakBefore = true;
FormatTok->setFinalizedType(TT_GotoLabelColon);
parseLabel(!Style.IndentGotoLabels);
if (HasLabel)
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index aadfa6dc0165c..d9c6e8cc1c877 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -2581,15 +2581,28 @@ TEST_F(TokenAnnotatorTest, UnderstandsLabels) {
auto Tokens = annotate("{ x: break; }");
ASSERT_EQ(Tokens.size(), 7u) << Tokens;
EXPECT_TOKEN(Tokens[2], tok::colon, TT_GotoLabelColon);
+
Tokens = annotate("{ case x: break; }");
ASSERT_EQ(Tokens.size(), 8u) << Tokens;
EXPECT_TOKEN(Tokens[3], tok::colon, TT_CaseLabelColon);
+
Tokens = annotate("{ x: { break; } }");
ASSERT_EQ(Tokens.size(), 9u) << Tokens;
EXPECT_TOKEN(Tokens[2], tok::colon, TT_GotoLabelColon);
+
Tokens = annotate("{ case x: { break; } }");
ASSERT_EQ(Tokens.size(), 10u) << Tokens;
EXPECT_TOKEN(Tokens[3], tok::colon, TT_CaseLabelColon);
+
+ Tokens = annotate("#define FOO label:");
+ ASSERT_EQ(Tokens.size(), 6u) << Tokens;
+ EXPECT_TOKEN(Tokens[4], tok::colon, TT_GotoLabelColon);
+
+ Tokens = annotate("#define FOO \\\n"
+ " label:\\\n"
+ " break;");
+ ASSERT_EQ(Tokens.size(), 8u) << Tokens;
+ EXPECT_TOKEN(Tokens[4], tok::colon, TT_GotoLabelColon);
}
TEST_F(TokenAnnotatorTest, UnderstandsNestedBlocks) {
|
owenca
changed the title
[clang-format] Fix a regression in annotating goto labels
[clang-format] Fix a bug in formatting goto labels in macros
May 17, 2024
mydeveloperday
approved these changes
May 21, 2024
/cherry-pick d89f200 |
llvmbot
pushed a commit
to llvmbot/llvm-project
that referenced
this pull request
May 28, 2024
) Fixes llvm#92300. (cherry picked from commit d89f200)
/pull-request #93494 |
tstellar
pushed a commit
to llvmbot/llvm-project
that referenced
this pull request
Jun 5, 2024
) Fixes llvm#92300. (cherry picked from commit d89f200)
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Fixes #92300.