https://github.com/snarang181 updated
https://github.com/llvm/llvm-project/pull/145166
>From 602b472aadebe365cb9f499ce85687a5e31605b8 Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Sat, 21 Jun 2025 08:42:00 -0400
Subject: [PATCH 1/7] Suppress noreturn warning if last statement in a function
is a throw
---
clang/lib/Sema/AnalysisBasedWarnings.cpp | 45 ++++++++++++++++++++
clang/test/SemaCXX/wreturn-always-throws.cpp | 22 ++++++++++
2 files changed, 67 insertions(+)
create mode 100644 clang/test/SemaCXX/wreturn-always-throws.cpp
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 2a107a36e24b4..85a5d99c710d5 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -626,6 +626,31 @@ struct CheckFallThroughDiagnostics {
} // anonymous namespace
+static bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
+ if (!FD->hasBody())
+ return false;
+ const Stmt *Body = FD->getBody();
+ const Stmt *OnlyStmt = nullptr;
+
+ if (const auto *Compound = dyn_cast<CompoundStmt>(Body)) {
+ if (Compound->size() != 1)
+ return false; // More than one statement, can't be known to always throw.
+ OnlyStmt = *Compound->body_begin();
+ } else {
+ OnlyStmt = Body;
+ }
+
+ // Unwrap ExprWithCleanups if necessary.
+ if (const auto *EWC = dyn_cast<ExprWithCleanups>(OnlyStmt)) {
+ OnlyStmt = EWC->getSubExpr();
+ }
+ // Check if the only statement is a throw expression.
+ if (isa<CXXThrowExpr>(OnlyStmt)) {
+ return true; // Known to always throw.
+ }
+ return false; // Not known to always throw.
+}
+
/// CheckFallThroughForBody - Check that we don't fall off the end of a
/// function that should return a value. Check that we don't fall off the end
/// of a noreturn function. We assume that functions and blocks not marked
@@ -681,6 +706,26 @@ static void CheckFallThroughForBody(Sema &S, const Decl
*D, const Stmt *Body,
if (CD.diag_FallThrough_HasNoReturn)
S.Diag(RBrace, CD.diag_FallThrough_HasNoReturn) << CD.FunKind;
} else if (!ReturnsVoid && CD.diag_FallThrough_ReturnsNonVoid) {
+ // If the final statement is a call to an always-throwing function,
+ // don't warn about the fall-through.
+ if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
+ if (const auto *CS = dyn_cast<CompoundStmt>(Body)) {
+ if (!CS->body_empty()) {
+ const Stmt *LastStmt = CS->body_back();
+ // Unwrap ExprWithCleanups if necessary.
+ if (const auto *EWC = dyn_cast<ExprWithCleanups>(LastStmt)) {
+ LastStmt = EWC->getSubExpr();
+ }
+ if (const auto *CE = dyn_cast<CallExpr>(LastStmt)) {
+ if (const FunctionDecl *Callee = CE->getDirectCallee()) {
+ if (isKnownToAlwaysThrow(Callee)) {
+ return; // Don't warn about fall-through.
+ }
+ }
+ }
+ }
+ }
+ }
bool NotInAllControlPaths = FallThroughType == MaybeFallThrough;
S.Diag(RBrace, CD.diag_FallThrough_ReturnsNonVoid)
<< CD.FunKind << NotInAllControlPaths;
diff --git a/clang/test/SemaCXX/wreturn-always-throws.cpp
b/clang/test/SemaCXX/wreturn-always-throws.cpp
new file mode 100644
index 0000000000000..0bbce0f5c1871
--- /dev/null
+++ b/clang/test/SemaCXX/wreturn-always-throws.cpp
@@ -0,0 +1,22 @@
+// RUN: %clang_cc1 -fsyntax-only -fcxx-exceptions -fexceptions -Wreturn-type
-verify %s
+// expected-no-diagnostics
+
+namespace std {
+ class string {
+ public:
+ string(const char*); // constructor for runtime_error
+ };
+ class runtime_error {
+ public:
+ runtime_error(const string &);
+ };
+}
+
+void throwError(const std::string& msg) {
+ throw std::runtime_error(msg);
+}
+
+int ensureZero(const int i) {
+ if (i == 0) return 0;
+ throwError("ERROR"); // no-warning
+}
>From 60c5a28a2e6caee24dc689948857c27f4a77fe89 Mon Sep 17 00:00:00 2001
From: Samarth Narang <70980689+snarang...@users.noreply.github.com>
Date: Sat, 21 Jun 2025 11:05:17 -0400
Subject: [PATCH 2/7] Update clang/lib/Sema/AnalysisBasedWarnings.cpp
Co-authored-by: Copilot <175728472+copi...@users.noreply.github.com>
---
clang/lib/Sema/AnalysisBasedWarnings.cpp | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 85a5d99c710d5..67e379fdd7d38 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -624,9 +624,7 @@ struct CheckFallThroughDiagnostics {
}
};
-} // anonymous namespace
-
-static bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
+bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
if (!FD->hasBody())
return false;
const Stmt *Body = FD->getBody();
@@ -651,6 +649,7 @@ static bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
return false; // Not known to always throw.
}
+} // anonymous namespace
/// CheckFallThroughForBody - Check that we don't fall off the end of a
/// function that should return a value. Check that we don't fall off the end
/// of a noreturn function. We assume that functions and blocks not marked
>From 65126bc67c48e14b2efe2530db9516e1db16aa32 Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Sat, 21 Jun 2025 11:29:58 -0400
Subject: [PATCH 3/7] Handle direct throws in functions.
---
clang/lib/Sema/AnalysisBasedWarnings.cpp | 4 ++++
clang/test/SemaCXX/wreturn-always-throws.cpp | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 67e379fdd7d38..9502669612f74 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -722,6 +722,10 @@ static void CheckFallThroughForBody(Sema &S, const Decl
*D, const Stmt *Body,
}
}
}
+ // Direct throw.
+ if (isa<CXXThrowExpr>(LastStmt)) {
+ return; // Don't warn about fall-through.
+ }
}
}
}
diff --git a/clang/test/SemaCXX/wreturn-always-throws.cpp
b/clang/test/SemaCXX/wreturn-always-throws.cpp
index 0bbce0f5c1871..5d2d2f0dffefe 100644
--- a/clang/test/SemaCXX/wreturn-always-throws.cpp
+++ b/clang/test/SemaCXX/wreturn-always-throws.cpp
@@ -20,3 +20,7 @@ int ensureZero(const int i) {
if (i == 0) return 0;
throwError("ERROR"); // no-warning
}
+
+int alwaysThrows() {
+ throw std::runtime_error("This function always throws"); // no-warning
+}
>From c9a6d21785db5be0e7e7654a4e5982e4829e7db6 Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Sat, 21 Jun 2025 12:34:41 -0400
Subject: [PATCH 4/7] Address review comments Add a note in the release notes
about the fix for the no-return function warning
---
clang/docs/ReleaseNotes.rst | 6 ++++
clang/lib/Sema/AnalysisBasedWarnings.cpp | 35 ++++++++++--------------
2 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 86216f1503457..60d991831534b 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -648,6 +648,12 @@ Improvements to Clang's diagnostics
#GH69470, #GH59391, #GH58172, #GH46215, #GH45915, #GH45891, #GH44490,
#GH36703, #GH32903, #GH23312, #GH69874.
+- Clang no longer warns about missing return statements (-Wreturn-type)
+ if the final statement of a non-void function is a `throw` expression
+ or a call to a function that is known to always throw. This avoids
+ false positives in code patterns where control flow is intentionally
+ terminated via exceptions.
+
Improvements to Clang's time-trace
----------------------------------
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 9502669612f74..ac9ba762adeb3 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -643,10 +643,7 @@ bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
OnlyStmt = EWC->getSubExpr();
}
// Check if the only statement is a throw expression.
- if (isa<CXXThrowExpr>(OnlyStmt)) {
- return true; // Known to always throw.
- }
- return false; // Not known to always throw.
+ return isa<CXXThrowExpr>(OnlyStmt);
}
} // anonymous namespace
@@ -708,25 +705,23 @@ static void CheckFallThroughForBody(Sema &S, const Decl
*D, const Stmt *Body,
// If the final statement is a call to an always-throwing function,
// don't warn about the fall-through.
if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
- if (const auto *CS = dyn_cast<CompoundStmt>(Body)) {
- if (!CS->body_empty()) {
- const Stmt *LastStmt = CS->body_back();
- // Unwrap ExprWithCleanups if necessary.
- if (const auto *EWC = dyn_cast<ExprWithCleanups>(LastStmt)) {
- LastStmt = EWC->getSubExpr();
- }
- if (const auto *CE = dyn_cast<CallExpr>(LastStmt)) {
- if (const FunctionDecl *Callee = CE->getDirectCallee()) {
- if (isKnownToAlwaysThrow(Callee)) {
- return; // Don't warn about fall-through.
- }
- }
- }
- // Direct throw.
- if (isa<CXXThrowExpr>(LastStmt)) {
+ if (const auto *CS = dyn_cast<CompoundStmt>(Body);
+ CS && !CS->body_empty()) {
+ const Stmt *LastStmt = CS->body_back();
+ // Unwrap ExprWithCleanups if necessary.
+ if (const auto *EWC = dyn_cast<ExprWithCleanups>(LastStmt)) {
+ LastStmt = EWC->getSubExpr();
+ }
+ if (const auto *CE = dyn_cast<CallExpr>(LastStmt)) {
+ if (const FunctionDecl *Callee = CE->getDirectCallee();
+ Callee && isKnownToAlwaysThrow(Callee)) {
return; // Don't warn about fall-through.
}
}
+ // Direct throw.
+ if (isa<CXXThrowExpr>(LastStmt)) {
+ return; // Don't warn about fall-through.
+ }
}
}
bool NotInAllControlPaths = FallThroughType == MaybeFallThrough;
>From d9b3920e63cc78605ea3bd2a1bcb5a225709343f Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Tue, 24 Jun 2025 19:14:45 -0400
Subject: [PATCH 5/7] Make clear in the release notes and inline comments that
this is a conservative fix and not a complete solution to the no-return
function analysis.
---
clang/docs/ReleaseNotes.rst | 11 ++++++-----
clang/lib/Sema/AnalysisBasedWarnings.cpp | 7 ++++++-
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 60d991831534b..c035d53c0d31a 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -648,11 +648,12 @@ Improvements to Clang's diagnostics
#GH69470, #GH59391, #GH58172, #GH46215, #GH45915, #GH45891, #GH44490,
#GH36703, #GH32903, #GH23312, #GH69874.
-- Clang no longer warns about missing return statements (-Wreturn-type)
- if the final statement of a non-void function is a `throw` expression
- or a call to a function that is known to always throw. This avoids
- false positives in code patterns where control flow is intentionally
- terminated via exceptions.
+- Clang now avoids issuing `-Wreturn-type` warnings in some cases where
+ the final statement of a non-void function is a `throw` expression, or
+ a call to a function that is trivially known to always throw (i.e., its
+ body consists solely of a `throw` statement). This avoids certain
+ false positives in exception-heavy code, though only simple patterns
+ are currently recognized.
Improvements to Clang's time-trace
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index ac9ba762adeb3..e1b0b56a4635a 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -624,6 +624,11 @@ struct CheckFallThroughDiagnostics {
}
};
+// FIXME: This is a shallow best-effort check. Currently, we only handle
+// cases where the function body consists of a single `throw` expression,
+// possibly wrapped in an `ExprWithCleanups`. We do not perform general
+// control-flow analysis or handle more complex throwing patterns.
+// Consider expanding this to handle more cases in the future.
bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
if (!FD->hasBody())
return false;
@@ -704,7 +709,7 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D,
const Stmt *Body,
} else if (!ReturnsVoid && CD.diag_FallThrough_ReturnsNonVoid) {
// If the final statement is a call to an always-throwing function,
// don't warn about the fall-through.
- if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
+ if (const auto *FD = D->getAsFunction()) {
if (const auto *CS = dyn_cast<CompoundStmt>(Body);
CS && !CS->body_empty()) {
const Stmt *LastStmt = CS->body_back();
>From 8cca1b0b1041e0830c750df79d3ee20ecbff2094 Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Thu, 26 Jun 2025 23:32:51 -0400
Subject: [PATCH 6/7] Clang now suppresses -Wreturn-type diagnostics for
non-void functions that always throw, by inferring an implicit
InferredNoReturnAttr on simple cases (single throw statements).
---
clang/include/clang/Basic/Attr.td | 7 +++++
clang/include/clang/Sema/Sema.h | 2 ++
clang/lib/Sema/AnalysisBasedWarnings.cpp | 32 ++-----------------
clang/lib/Sema/Sema.cpp | 7 +++--
clang/lib/Sema/SemaDeclAttr.cpp | 39 ++++++++++++++++++++++++
5 files changed, 56 insertions(+), 31 deletions(-)
diff --git a/clang/include/clang/Basic/Attr.td
b/clang/include/clang/Basic/Attr.td
index 5d8ce6b650d9c..5bf7e5400173a 100644
--- a/clang/include/clang/Basic/Attr.td
+++ b/clang/include/clang/Basic/Attr.td
@@ -965,6 +965,13 @@ def AnalyzerNoReturn : InheritableAttr {
let Documentation = [Undocumented];
}
+def InferredNoReturn : InheritableAttr {
+ let Spellings = [];
+ let SemaHandler = 0;
+ let Documentation = [Undocumented];
+ let Subjects = SubjectList<[Function], ErrorDiag>;
+}
+
def Annotate : InheritableParamOrStmtAttr {
let Spellings = [Clang<"annotate">];
let Args = [StringArgument<"Annotation">, VariadicExprArgument<"Args">];
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 9397546c8fc5d..4ded9ffae7d71 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -834,6 +834,8 @@ enum class CCEKind {
///< message.
};
+void inferNoReturnAttr(Sema &S, FunctionDecl *FD);
+
/// Sema - This implements semantic analysis and AST building for C.
/// \nosubgrouping
class Sema final : public SemaBase {
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp
b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index e1b0b56a4635a..f3798bb6a7450 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -624,34 +624,8 @@ struct CheckFallThroughDiagnostics {
}
};
-// FIXME: This is a shallow best-effort check. Currently, we only handle
-// cases where the function body consists of a single `throw` expression,
-// possibly wrapped in an `ExprWithCleanups`. We do not perform general
-// control-flow analysis or handle more complex throwing patterns.
-// Consider expanding this to handle more cases in the future.
-bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
- if (!FD->hasBody())
- return false;
- const Stmt *Body = FD->getBody();
- const Stmt *OnlyStmt = nullptr;
-
- if (const auto *Compound = dyn_cast<CompoundStmt>(Body)) {
- if (Compound->size() != 1)
- return false; // More than one statement, can't be known to always throw.
- OnlyStmt = *Compound->body_begin();
- } else {
- OnlyStmt = Body;
- }
-
- // Unwrap ExprWithCleanups if necessary.
- if (const auto *EWC = dyn_cast<ExprWithCleanups>(OnlyStmt)) {
- OnlyStmt = EWC->getSubExpr();
- }
- // Check if the only statement is a throw expression.
- return isa<CXXThrowExpr>(OnlyStmt);
-}
-
} // anonymous namespace
+
/// CheckFallThroughForBody - Check that we don't fall off the end of a
/// function that should return a value. Check that we don't fall off the end
/// of a noreturn function. We assume that functions and blocks not marked
@@ -669,7 +643,7 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D,
const Stmt *Body,
ReturnsVoid = CBody->getFallthroughHandler() != nullptr;
else
ReturnsVoid = FD->getReturnType()->isVoidType();
- HasNoReturn = FD->isNoReturn();
+ HasNoReturn = FD->isNoReturn() || FD->hasAttr<InferredNoReturnAttr>();
}
else if (const auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
ReturnsVoid = MD->getReturnType()->isVoidType();
@@ -719,7 +693,7 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D,
const Stmt *Body,
}
if (const auto *CE = dyn_cast<CallExpr>(LastStmt)) {
if (const FunctionDecl *Callee = CE->getDirectCallee();
- Callee && isKnownToAlwaysThrow(Callee)) {
+ Callee && Callee->hasAttr<InferredNoReturnAttr>()) {
return; // Don't warn about fall-through.
}
}
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index 42ebf2a508a26..b482588dcf6e6 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -2434,9 +2434,12 @@ Sema::PopFunctionScopeInfo(const
AnalysisBasedWarnings::Policy *WP,
OpenMP().popOpenMPFunctionRegion(Scope.get());
// Issue any analysis-based warnings.
- if (WP && D)
+ if (WP && D) {
+ if (auto *FD = dyn_cast<FunctionDecl>(D)) {
+ inferNoReturnAttr(*this, const_cast<FunctionDecl *>(FD));
+ }
AnalysisWarnings.IssueWarnings(*WP, Scope.get(), D, BlockType);
- else
+ } else
for (const auto &PUD : Scope->PossiblyUnreachableDiags)
Diag(PUD.Loc, PUD.PD);
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index eba29e609cb05..d20ca94657940 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -40,6 +40,7 @@
#include "clang/Sema/ParsedAttr.h"
#include "clang/Sema/Scope.h"
#include "clang/Sema/ScopeInfo.h"
+#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaAMDGPU.h"
#include "clang/Sema/SemaARM.h"
#include "clang/Sema/SemaAVR.h"
@@ -1938,6 +1939,44 @@ static void handleNakedAttr(Sema &S, Decl *D, const
ParsedAttr &AL) {
D->addAttr(::new (S.Context) NakedAttr(S.Context, AL));
}
+// FIXME: This is a best-effort heuristic.
+// Currently only handles single throw expressions (optionally with
+// ExprWithCleanups). We could expand this to perform control-flow analysis for
+// more complex patterns.
+static bool isKnownToAlwaysThrow(const FunctionDecl *FD) {
+ if (!FD->hasBody())
+ return false;
+ const Stmt *Body = FD->getBody();
+ const Stmt *OnlyStmt = nullptr;
+
+ if (const auto *Compound = dyn_cast<CompoundStmt>(Body)) {
+ if (Compound->size() != 1)
+ return false; // More than one statement, can't be known to always throw.
+ OnlyStmt = *Compound->body_begin();
+ } else {
+ OnlyStmt = Body;
+ }
+
+ // Unwrap ExprWithCleanups if necessary.
+ if (const auto *EWC = dyn_cast<ExprWithCleanups>(OnlyStmt)) {
+ OnlyStmt = EWC->getSubExpr();
+ }
+ // Check if the only statement is a throw expression.
+ return isa<CXXThrowExpr>(OnlyStmt);
+}
+
+void clang::inferNoReturnAttr(Sema &S, FunctionDecl *FD) {
+ DiagnosticsEngine &Diags = S.getDiagnostics();
+ if (Diags.isIgnored(diag::warn_falloff_nonvoid, FD->getLocation()) &&
+ Diags.isIgnored(diag::warn_suggest_noreturn_function, FD->getLocation()))
+ return;
+
+ if (!FD->hasAttr<NoReturnAttr>() && !FD->hasAttr<InferredNoReturnAttr>() &&
+ isKnownToAlwaysThrow(FD)) {
+ FD->addAttr(InferredNoReturnAttr::CreateImplicit(S.Context));
+ }
+}
+
static void handleNoReturnAttr(Sema &S, Decl *D, const ParsedAttr &Attrs) {
if (hasDeclarator(D)) return;
>From cf0818932c865713ed18120137f34ac3ca65b61f Mon Sep 17 00:00:00 2001
From: Samarth Narang <snar...@umass.edu>
Date: Thu, 26 Jun 2025 23:45:52 -0400
Subject: [PATCH 7/7] For Spellings = [], don't set Documentation at all.
---
clang/include/clang/Basic/Attr.td | 1 -
1 file changed, 1 deletion(-)
diff --git a/clang/include/clang/Basic/Attr.td
b/clang/include/clang/Basic/Attr.td
index 5bf7e5400173a..f48a95ee09b64 100644
--- a/clang/include/clang/Basic/Attr.td
+++ b/clang/include/clang/Basic/Attr.td
@@ -968,7 +968,6 @@ def AnalyzerNoReturn : InheritableAttr {
def InferredNoReturn : InheritableAttr {
let Spellings = [];
let SemaHandler = 0;
- let Documentation = [Undocumented];
let Subjects = SubjectList<[Function], ErrorDiag>;
}
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