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clang-format: Add AlignFunctionDeclarations attribute to AlignConsecutiveDeclarations #108241
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@llvm/pr-subscribers-clang-format @llvm/pr-subscribers-clang Author: Brad House (bradh352) ChangesEnabling AlignConsecutiveDeclarations also aligns function prototypes Setting AlignFunctionDeclarations to false will skip this alignment. Fixes #74320 Full diff: https://github.com/llvm/llvm-project/pull/108241.diff 6 Files Affected:
diff --git a/clang/docs/ClangFormatStyleOptions.rst b/clang/docs/ClangFormatStyleOptions.rst
index a427d7cd40fcdd..c862d57a19b954 100644
--- a/clang/docs/ClangFormatStyleOptions.rst
+++ b/clang/docs/ClangFormatStyleOptions.rst
@@ -409,6 +409,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -551,6 +566,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -693,6 +723,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -836,6 +881,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -1098,6 +1158,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -1238,6 +1313,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
@@ -1378,6 +1468,21 @@ the configuration (without a prefix: ``Auto``).
int *p;
int (*f)();
+ * ``bool AlignFunctionDeclarations`` Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ are aligned.
+
+ .. code-block:: c++
+
+ true:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
+ false:
+ unsigned int f1(void);
+ void f2(void);
+ size_t f3(void);
+
* ``bool PadOperators`` Only for ``AlignConsecutiveAssignments``. Whether short assignment
operators are left-padded to the same length as long ones in order to
put all assignment operators to the right of the left hand side.
diff --git a/clang/include/clang/Format/Format.h b/clang/include/clang/Format/Format.h
index d8b62c7652a0f6..23aa98128d02ae 100644
--- a/clang/include/clang/Format/Format.h
+++ b/clang/include/clang/Format/Format.h
@@ -241,6 +241,20 @@ struct FormatStyle {
/// int (*f)();
/// \endcode
bool AlignFunctionPointers;
+ /// Only for ``AlignConsecutiveDeclarations``. Whether function declarations
+ /// are aligned.
+ /// \code
+ /// true:
+ /// unsigned int f1(void);
+ /// void f2(void);
+ /// size_t f3(void);
+ ///
+ /// false:
+ /// unsigned int f1(void);
+ /// void f2(void);
+ /// size_t f3(void);
+ /// \endcode
+ bool AlignFunctionDeclarations;
/// Only for ``AlignConsecutiveAssignments``. Whether short assignment
/// operators are left-padded to the same length as long ones in order to
/// put all assignment operators to the right of the left hand side.
@@ -265,6 +279,7 @@ struct FormatStyle {
AcrossComments == R.AcrossComments &&
AlignCompound == R.AlignCompound &&
AlignFunctionPointers == R.AlignFunctionPointers &&
+ AlignFunctionDeclarations == R.AlignFunctionDeclarations &&
PadOperators == R.PadOperators;
}
bool operator!=(const AlignConsecutiveStyle &R) const {
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index d2463b892fbb96..d4c3e2af58e68f 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -48,39 +48,53 @@ template <> struct MappingTraits<FormatStyle::AlignConsecutiveStyle> {
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/false, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
IO.enumCase(Value, "Consecutive",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/true, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
IO.enumCase(Value, "AcrossEmptyLines",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/true, /*AcrossEmptyLines=*/true,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
IO.enumCase(Value, "AcrossComments",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/true, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/true, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
IO.enumCase(Value, "AcrossEmptyLinesAndComments",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/true, /*AcrossEmptyLines=*/true,
/*AcrossComments=*/true, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
// For backward compatibility.
IO.enumCase(Value, "true",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/true, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
IO.enumCase(Value, "false",
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/false, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/true}));
}
static void mapping(IO &IO, FormatStyle::AlignConsecutiveStyle &Value) {
@@ -89,6 +103,8 @@ template <> struct MappingTraits<FormatStyle::AlignConsecutiveStyle> {
IO.mapOptional("AcrossComments", Value.AcrossComments);
IO.mapOptional("AlignCompound", Value.AlignCompound);
IO.mapOptional("AlignFunctionPointers", Value.AlignFunctionPointers);
+ IO.mapOptional("AlignFunctionDeclarations",
+ Value.AlignFunctionDeclarations);
IO.mapOptional("PadOperators", Value.PadOperators);
}
};
@@ -1448,6 +1464,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
LLVMStyle.AlignConsecutiveAssignments.PadOperators = true;
LLVMStyle.AlignConsecutiveBitFields = {};
LLVMStyle.AlignConsecutiveDeclarations = {};
+ LLVMStyle.AlignConsecutiveDeclarations.AlignFunctionDeclarations = true;
LLVMStyle.AlignConsecutiveMacros = {};
LLVMStyle.AlignConsecutiveShortCaseStatements = {};
LLVMStyle.AlignConsecutiveTableGenBreakingDAGArgColons = {};
diff --git a/clang/lib/Format/WhitespaceManager.cpp b/clang/lib/Format/WhitespaceManager.cpp
index fd4a40a86082e2..b6b24672f6a39d 100644
--- a/clang/lib/Format/WhitespaceManager.cpp
+++ b/clang/lib/Format/WhitespaceManager.cpp
@@ -1020,7 +1020,7 @@ void WhitespaceManager::alignConsecutiveDeclarations() {
return true;
}
if (C.Tok->is(TT_FunctionDeclarationName))
- return true;
+ return Style.AlignConsecutiveDeclarations.AlignFunctionDeclarations;
if (C.Tok->isNot(TT_StartOfName))
return false;
if (C.Tok->Previous &&
diff --git a/clang/unittests/Format/ConfigParseTest.cpp b/clang/unittests/Format/ConfigParseTest.cpp
index b8bdfaaa74e10e..c1b841bc790bdd 100644
--- a/clang/unittests/Format/ConfigParseTest.cpp
+++ b/clang/unittests/Format/ConfigParseTest.cpp
@@ -305,38 +305,50 @@ TEST(ConfigParseTest, ParsesConfiguration) {
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/false, /*AcrossEmptyLines=*/false, \
/*AcrossComments=*/false, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
CHECK_PARSE( \
#FIELD ": Consecutive", FIELD, \
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/true, /*AcrossEmptyLines=*/false, \
/*AcrossComments=*/false, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
CHECK_PARSE( \
#FIELD ": AcrossEmptyLines", FIELD, \
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/true, /*AcrossEmptyLines=*/true, \
/*AcrossComments=*/false, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
CHECK_PARSE( \
#FIELD ": AcrossEmptyLinesAndComments", FIELD, \
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/true, /*AcrossEmptyLines=*/true, \
/*AcrossComments=*/true, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
/* For backwards compability, false / true should still parse */ \
CHECK_PARSE( \
#FIELD ": false", FIELD, \
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/false, /*AcrossEmptyLines=*/false, \
/*AcrossComments=*/false, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
CHECK_PARSE( \
#FIELD ": true", FIELD, \
FormatStyle::AlignConsecutiveStyle( \
{/*Enabled=*/true, /*AcrossEmptyLines=*/false, \
/*AcrossComments=*/false, /*AlignCompound=*/false, \
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true})); \
+ /*AlignFunctionPointers=*/false, \
+ /*AlignFunctionDeclarations=*/true, \
+ /*PadOperators=*/true})); \
\
CHECK_PARSE_NESTED_BOOL(FIELD, Enabled); \
CHECK_PARSE_NESTED_BOOL(FIELD, AcrossEmptyLines); \
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 5ebf0d7068dd6c..aea7df5ad147fc 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -20010,6 +20010,18 @@ TEST_F(FormatTest, AlignConsecutiveDeclarations) {
" return 0;\n"
"}() };",
BracedAlign);
+
+
+ Alignment.AlignConsecutiveDeclarations.AlignFunctionDeclarations = false;
+ verifyFormat("unsigned int f1(void);\n"
+ "void f2(void);\n"
+ "size_t f3(void);\n",
+ Alignment);
+ Alignment.AlignConsecutiveDeclarations.AlignFunctionDeclarations = true;
+ verifyFormat("unsigned int f1(void);\n"
+ "void f2(void);\n"
+ "size_t f3(void);\n",
+ Alignment);
}
TEST_F(FormatTest, AlignConsecutiveShortCaseStatements) {
@@ -20253,9 +20265,16 @@ TEST_F(FormatTest, AlignWithLineBreaks) {
FormatStyle::AlignConsecutiveStyle(
{/*Enabled=*/false, /*AcrossEmptyLines=*/false,
/*AcrossComments=*/false, /*AlignCompound=*/false,
- /*AlignFunctionPointers=*/false, /*PadOperators=*/true}));
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/false,
+ /*PadOperators=*/true}));
EXPECT_EQ(Style.AlignConsecutiveDeclarations,
- FormatStyle::AlignConsecutiveStyle({}));
+ FormatStyle::AlignConsecutiveStyle(
+ {/*Enabled=*/false, /*AcrossEmptyLines=*/false,
+ /*AcrossComments=*/false, /*AlignCompound=*/false,
+ /*AlignFunctionPointers=*/false,
+ /*AlignFunctionDeclarations=*/true,
+ /*PadOperators=*/false}));
verifyFormat("void foo() {\n"
" int myVar = 5;\n"
" double x = 3.14;\n"
|
✅ With the latest revision this PR passed the C/C++ code formatter. |
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I just corrected the formatting... |
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By and large this looks ok, (as long as your rst change was generated using the docs/tools/dump_format_style.py)
I'd like @owenca, @HazardyKnusperkeks and @rymiel to take a look
Yes, it was generated via the script. |
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Enabling AlignConsecutiveDeclarations also aligns function prototypes or declarations. This is often unexpected as typically function prototypes, especially in public headers, don't use any padding. Setting AlignFunctionDeclarations to false will skip this alignment. It is by default set to true to keep compatibility with prior versions to not make unexpected changes. Signed-off-by: Brad House <[email protected]>
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In regards to the "Test documentation build / Test documentation build (pull_request) " failure, I'm honestly not sure how to fix the formatting in this. I'm not seeing anything wrong with my addition in Format.h, but maybe there's something I'm missing. I never touch ClangFormatStyleOptions.rst directly. |
See https://github.com/llvm/llvm-project/pull/108241/files#r1770622313. |
ping |
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Please update clang/docs/ReleaseNotes.rst
.
* Changes requested to some existing code that is also part of PR llvm#111285. * Removal of redundant test case * Add of boolean check for AlignFunctionDeclarations
done |
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You can run ninja clang-format-check-format
and/or git clang-format HEAD~
before git push
.
whoops, sorry about that |
@bradh352 Congratulations on having your first Pull Request (PR) merged into the LLVM Project! Your changes will be combined with recent changes from other authors, then tested by our build bots. If there is a problem with a build, you may receive a report in an email or a comment on this PR. Please check whether problems have been caused by your change specifically, as the builds can include changes from many authors. It is not uncommon for your change to be included in a build that fails due to someone else's changes, or infrastructure issues. How to do this, and the rest of the post-merge process, is covered in detail here. If your change does cause a problem, it may be reverted, or you can revert it yourself. This is a normal part of LLVM development. You can fix your changes and open a new PR to merge them again. If you don't get any reports, no action is required from you. Your changes are working as expected, well done! |
* commit 'FETCH_HEAD': [X86] getIntImmCostInst - pull out repeated Imm.getBitWidth() calls. NFC. [X86] Add test coverage for llvm#111323 [Driver] Use empty multilib file in another test (llvm#111352) [clang][OpenMP][test] Use x86_64-linux-gnu triple for test referencing avx512f feature (llvm#111337) [doc] Fix Kaleidoscope tutorial chapter 3 code snippet and full listing discrepancies (llvm#111289) [Flang][OpenMP] Improve entry block argument creation and binding (llvm#110267) [x86] combineMul - handle 0/-1 KnownBits cases before MUL_IMM logic (REAPPLIED) [llvm-dis] Fix non-deterministic disassembly across multiple inputs (llvm#110988) [lldb][test] TestDataFormatterLibcxxOptionalSimulator.py: change order of ifdefs [lldb][test] Add libcxx-simulators test for std::optional (llvm#111133) [x86] combineMul - use computeKnownBits directly to find MUL_IMM constant splat. (REAPPLIED) Reland "[lldb][test] TestDataFormatterLibcxxStringSimulator.py: add new padding layout" (llvm#111123) Revert "[x86] combineMul - use computeKnownBits directly to find MUL_IMM constant splat." update_test_checks: fix a simple regression (llvm#111347) [LegalizeVectorTypes] Always widen fabs (llvm#111298) [lsan] Make ReportUnsuspendedThreads return bool also for Fuchsia [mlir][vector] Add more tests for ConvertVectorToLLVM (6/n) (llvm#111121) [bazel] port 9144fed [SystemZ] Remove inlining threshold multiplier. (llvm#106058) [LegalizeVectorTypes] When widening don't check for libcalls if promoted (llvm#111297) [clang][Driver] Improve multilib custom error reporting (llvm#110804) [clang][Driver] Rename "FatalError" key to "Error" in multilib.yaml (llvm#110804) [LLVM][Maintainers] Update release managers (llvm#111164) [Clang][Driver] Add option to provide path for multilib's YAML config file (llvm#109640) [LoopVectorize] Remove redundant code in emitSCEVChecks (llvm#111132) [AMDGPU] Only emit SCOPE_SYS global_wb (llvm#110636) [ELF] Change Ctx::target to unique_ptr (llvm#111260) [ELF] Pass Ctx & to some free functions [RISCV] Only disassemble fcvtmod.w.d if the rounding mode is rtz. (llvm#111308) [Clang] Remove the special-casing for RequiresExprBodyDecl in BuildResolvedCallExpr() after fd87d76 (llvm#111277) [ELF] Pass Ctx & to InputFile [clang-format] Add AlignFunctionDeclarations to AlignConsecutiveDeclarations (llvm#108241) [AMDGPU] Support preloading hidden kernel arguments (llvm#98861) [ELF] Move static nextGroupId isInGroup to LinkerDriver [clangd] Add ArgumentLists config option under Completion (llvm#111322) [ELF] Pass Ctx & to SyntheticSections [ELF] Pass Ctx & to Symbols [ELF] Pass Ctx & to Symbols [ELF] getRelocTargetVA: pass Ctx and Relocation. NFC [clang-tidy] Avoid capturing a local variable in a static lambda in UseRangesCheck (llvm#111282) [VPlan] Use pointer to member 0 as VPInterleaveRecipe's pointer arg. (llvm#106431) [clangd] Simplify ternary expressions with std::optional::value_or (NFC) (llvm#111309) [libc++][format][2/3] Optimizes c-string arguments. (llvm#101805) [RISCV] Combine RVBUnary and RVKUnary into classes that are more similar to ALU(W)_r(r/i). NFC (llvm#111279) [ELF] Pass Ctx & to InputFiles [libc] GPU RPC interface: add return value to `rpc_host_call` (llvm#111288) Signed-off-by: kyvangka1610 <[email protected]>
Enabling AlignConsecutiveDeclarations also aligns function prototypes
or declarations. This is often unexpected as typically function
prototypes, especially in public headers, don't use any padding.
Setting AlignFunctionDeclarations to false will skip this alignment.
It is by default set to true to keep compatibility with prior
versions to not make unexpected changes.
Fixes #74320
Signed-off-by: Brad House [email protected]