[PATCH] D158158: [clang] Set FP options in Sema when instantiating CompoundStmt
Serge Pavlov via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Sun Aug 20 22:38:01 PDT 2023
This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG0baf85c33109: [clang] Set FP options in Sema when instantiating CompoundStmt (authored by sepavloff).
Changed prior to commit:
https://reviews.llvm.org/D158158?vs=551044&id=551902#toc
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D158158/new/
https://reviews.llvm.org/D158158
Files:
clang/lib/Sema/TreeTransform.h
clang/test/SemaCXX/template-64605.cpp
Index: clang/test/SemaCXX/template-64605.cpp
===================================================================
--- /dev/null
+++ clang/test/SemaCXX/template-64605.cpp
@@ -0,0 +1,23 @@
+// RUN: %clang_cc1 -ast-dump -ast-dump-filter=b_64605 %s | FileCheck %s
+
+// https://github.com/llvm/llvm-project/issues/64605
+
+#pragma STDC FENV_ACCESS ON
+template <typename>
+int b_64605() {
+ int x;
+ if ((float)0xFFFFFFFF != (float)0x100000000) {
+ x = 1;
+ }
+ return x;
+}
+int f() { return b_64605<void>(); }
+
+// CHECK: ImplicitCastExpr {{.*}} 'float' <IntegralToFloating> RoundingMath=1 AllowFEnvAccess=1
+// CHECK-NEXT: IntegerLiteral {{.*}} 4294967295
+
+// CHECK: FunctionDecl {{.*}} b_64605 'int ()' implicit_instantiation
+// CHECK-NEXT: TemplateArgument type 'void'
+
+// CHECK: ImplicitCastExpr {{.*}} 'float' <IntegralToFloating> RoundingMath=1 AllowFEnvAccess=1
+// CHECK-NEXT: IntegerLiteral {{.*}} 4294967295
Index: clang/lib/Sema/TreeTransform.h
===================================================================
--- clang/lib/Sema/TreeTransform.h
+++ clang/lib/Sema/TreeTransform.h
@@ -7491,6 +7491,10 @@
TreeTransform<Derived>::TransformCompoundStmt(CompoundStmt *S,
bool IsStmtExpr) {
Sema::CompoundScopeRAII CompoundScope(getSema());
+ Sema::FPFeaturesStateRAII FPSave(getSema());
+ if (S->hasStoredFPFeatures())
+ getSema().resetFPOptions(
+ S->getStoredFPFeatures().applyOverrides(getSema().getLangOpts()));
const Stmt *ExprResult = S->getStmtExprResult();
bool SubStmtInvalid = false;
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