[clang] 19884d6 - [clang-format] Don't skip PP lines if original line was a PP line when trying to merge lines
Arthur Eubanks via cfe-commits
cfe-commits at lists.llvm.org
Wed Apr 20 08:43:04 PDT 2022
Author: Arthur Eubanks
Date: 2022-04-20T08:42:30-07:00
New Revision: 19884d62c44cdcf236cdf4a55e8a50437070c4fc
URL: https://github.com/llvm/llvm-project/commit/19884d62c44cdcf236cdf4a55e8a50437070c4fc
DIFF: https://github.com/llvm/llvm-project/commit/19884d62c44cdcf236cdf4a55e8a50437070c4fc.diff
LOG: [clang-format] Don't skip PP lines if original line was a PP line when trying to merge lines
Fixes a crash introduced in D123737 where LastNonComment would be null.
Reviewed By: curdeius
Differential Revision: https://reviews.llvm.org/D124036
Added:
Modified:
clang/lib/Format/UnwrappedLineFormatter.cpp
clang/unittests/Format/FormatTest.cpp
Removed:
################################################################################
diff --git a/clang/lib/Format/UnwrappedLineFormatter.cpp b/clang/lib/Format/UnwrappedLineFormatter.cpp
index 9154999e2644f..6137cdf344bc0 100644
--- a/clang/lib/Format/UnwrappedLineFormatter.cpp
+++ b/clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -307,9 +307,13 @@ class LineJoiner {
// TODO: Use IndentTracker to avoid loop?
// Find the last line with lower level.
auto J = I - 1;
- for (; J != AnnotatedLines.begin(); --J)
- if (!(*J)->InPPDirective && (*J)->Level < TheLine->Level)
- break;
+ if (!TheLine->InPPDirective) {
+ for (; J != AnnotatedLines.begin(); --J) {
+ if (!(*J)->InPPDirective && (*J)->Level < TheLine->Level)
+ break;
+ }
+ }
+
if ((*J)->Level >= TheLine->Level)
return false;
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index bf4ba3d4738ee..d727ef2254fde 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -13393,6 +13393,12 @@ TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
" return 1; \\\n"
" return 2;",
ShortMergedIf);
+
+ verifyFormat("//\n"
+ "#define a \\\n"
+ " if \\\n"
+ " 0",
+ getChromiumStyle(FormatStyle::LK_Cpp));
}
TEST_F(FormatTest, FormatStarDependingOnContext) {
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