diff --git a/SwiftCompilerSources/Sources/SIL/BasicBlock.swift b/SwiftCompilerSources/Sources/SIL/BasicBlock.swift
index d4777535e511f..9fc2b157ea1e6 100644
--- a/SwiftCompilerSources/Sources/SIL/BasicBlock.swift
+++ b/SwiftCompilerSources/Sources/SIL/BasicBlock.swift
@@ -25,7 +25,8 @@ final public class BasicBlock : ListNode, CustomStringConvertible, HasShortDescr
   public var function: Function { SILBasicBlock_getFunction(bridged).function }
 
   public var description: String {
-    String(_cxxString: SILBasicBlock_debugDescription(bridged))
+    let stdString = SILBasicBlock_debugDescription(bridged)
+    return String(_cxxString: stdString)
   }
   public var shortDescription: String { name }
 
diff --git a/SwiftCompilerSources/Sources/SIL/Function.swift b/SwiftCompilerSources/Sources/SIL/Function.swift
index 95e3fa10ce951..05e35c26cff58 100644
--- a/SwiftCompilerSources/Sources/SIL/Function.swift
+++ b/SwiftCompilerSources/Sources/SIL/Function.swift
@@ -21,7 +21,8 @@ final public class Function : CustomStringConvertible, HasShortDescription {
   }
 
   final public var description: String {
-    String(_cxxString: SILFunction_debugDescription(bridged))
+    let stdString = SILFunction_debugDescription(bridged)
+    return String(_cxxString: stdString)
   }
 
   public var shortDescription: String { name.string }
diff --git a/SwiftCompilerSources/Sources/SIL/GlobalVariable.swift b/SwiftCompilerSources/Sources/SIL/GlobalVariable.swift
index b84708f9fd342..35e933599d4ab 100644
--- a/SwiftCompilerSources/Sources/SIL/GlobalVariable.swift
+++ b/SwiftCompilerSources/Sources/SIL/GlobalVariable.swift
@@ -19,7 +19,8 @@ final public class GlobalVariable : CustomStringConvertible, HasShortDescription
   }
 
   public var description: String {
-    String(_cxxString: SILGlobalVariable_debugDescription(bridged))
+    let stdString = SILGlobalVariable_debugDescription(bridged)
+    return String(_cxxString: stdString)
   }
 
   public var shortDescription: String { name.string }
diff --git a/SwiftCompilerSources/Sources/SIL/Instruction.swift b/SwiftCompilerSources/Sources/SIL/Instruction.swift
index f235e783e3bb4..ce01d95c534e2 100644
--- a/SwiftCompilerSources/Sources/SIL/Instruction.swift
+++ b/SwiftCompilerSources/Sources/SIL/Instruction.swift
@@ -38,7 +38,8 @@ public class Instruction : ListNode, CustomStringConvertible, Hashable {
   final public var function: Function { block.function }
 
   final public var description: String {
-    String(_cxxString: SILNode_debugDescription(bridgedNode))
+    let stdString = SILNode_debugDescription(bridgedNode)
+    return String(_cxxString: stdString)
   }
 
   final public var operands: OperandArray {
@@ -142,7 +143,8 @@ public class SingleValueInstruction : Instruction, Value {
 
 public final class MultipleValueInstructionResult : Value {
   final public var description: String {
-    String(_cxxString: SILNode_debugDescription(bridgedNode))
+    let stdString = SILNode_debugDescription(bridgedNode)
+    return String(_cxxString: stdString)
   }
 
   public var instruction: Instruction {
diff --git a/SwiftCompilerSources/Sources/SIL/Value.swift b/SwiftCompilerSources/Sources/SIL/Value.swift
index ddbd4344526bf..368b1d81d4d69 100644
--- a/SwiftCompilerSources/Sources/SIL/Value.swift
+++ b/SwiftCompilerSources/Sources/SIL/Value.swift
@@ -81,7 +81,8 @@ public enum Ownership {
 
 extension Value {
   public var description: String {
-    String(_cxxString: SILNode_debugDescription(bridgedNode))
+    let stdString = SILNode_debugDescription(bridgedNode)
+    return String(_cxxString: stdString)
   }
 
   public var uses: UseList {
diff --git a/test/SILOptimizer/addr_escape_info.sil b/test/SILOptimizer/addr_escape_info.sil
index 0f6c069cec95a..d3478834af8fe 100644
--- a/test/SILOptimizer/addr_escape_info.sil
+++ b/test/SILOptimizer/addr_escape_info.sil
@@ -2,9 +2,6 @@
 
 // REQUIRES: swift_in_compiler
 
-// rdar92963081
-// UNSUPPORTED: OS=linux-gnu
-
 sil_stage canonical
 
 import Builtin
diff --git a/test/SILOptimizer/escape_info.sil b/test/SILOptimizer/escape_info.sil
index c4ab8918e2a1c..e2d9d19e94d03 100644
--- a/test/SILOptimizer/escape_info.sil
+++ b/test/SILOptimizer/escape_info.sil
@@ -2,9 +2,6 @@
 
 // REQUIRES: swift_in_compiler
 
-// rdar92963081
-// UNSUPPORTED: OS=linux-gnu
-
 sil_stage canonical
 
 import Builtin
diff --git a/test/SILOptimizer/ranges.sil b/test/SILOptimizer/ranges.sil
index a0c74989e45b9..6b97c3bed5ec7 100644
--- a/test/SILOptimizer/ranges.sil
+++ b/test/SILOptimizer/ranges.sil
@@ -2,9 +2,6 @@
 
 // REQUIRES: swift_in_compiler
 
-// rdar92963081
-// UNSUPPORTED: OS=linux-gnu
-
 sil_stage canonical
 
 // CHECK-LABEL: Instruction range in basic_test: