diff --git a/test/stdlib/FloatConstants.swift b/test/stdlib/FloatConstants.swift
index 3b29cf076e5b4..e9b491b9e1bf2 100644
--- a/test/stdlib/FloatConstants.swift
+++ b/test/stdlib/FloatConstants.swift
@@ -2,7 +2,7 @@
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #elseif os(Windows)
   import MSVCRT
diff --git a/test/stdlib/MathConstants.swift b/test/stdlib/MathConstants.swift
index 8ac352de22e50..85ba2d0bca6b8 100644
--- a/test/stdlib/MathConstants.swift
+++ b/test/stdlib/MathConstants.swift
@@ -2,7 +2,7 @@
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #elseif os(Windows)
   import MSVCRT
diff --git a/test/stdlib/POSIX.swift b/test/stdlib/POSIX.swift
index ead9a623554b4..c01589a36f135 100644
--- a/test/stdlib/POSIX.swift
+++ b/test/stdlib/POSIX.swift
@@ -5,7 +5,7 @@
 import StdlibUnittest
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #else
 #error("Unsupported platform")
diff --git a/test/stdlib/PrintPointer.swift b/test/stdlib/PrintPointer.swift
index 5c844d1ed56df..04df219305384 100644
--- a/test/stdlib/PrintPointer.swift
+++ b/test/stdlib/PrintPointer.swift
@@ -9,12 +9,12 @@ PrintTests.test("Printable") {
   let lowUP = UnsafeMutablePointer<Float>(bitPattern: 0x1)!
   let fourByteUP = UnsafeMutablePointer<Float>(bitPattern: 0xabcd1234 as UInt)!
   
-#if !(arch(i386) || arch(arm))
+#if !(arch(i386) || arch(arm) || arch(wasm32))
   let eightByteAddr: UInt = 0xabcddcba12344321
   let eightByteUP = UnsafeMutablePointer<Float>(bitPattern: eightByteAddr)!
 #endif
   
-#if arch(i386) || arch(arm)
+#if arch(i386) || arch(arm) || arch(wasm32)
   let expectedLow = "0x00000001"
   expectPrinted("0xabcd1234", fourByteUP)
 #else
diff --git a/test/stdlib/Runtime.swift.gyb b/test/stdlib/Runtime.swift.gyb
index 38db24b6f1994..876e5890bfbff 100644
--- a/test/stdlib/Runtime.swift.gyb
+++ b/test/stdlib/Runtime.swift.gyb
@@ -12,7 +12,7 @@ import SwiftShims
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #elseif os(Windows)
   import MSVCRT
diff --git a/test/stdlib/VarArgs.swift b/test/stdlib/VarArgs.swift
index d81545865b0c4..94aef60bf1b40 100644
--- a/test/stdlib/VarArgs.swift
+++ b/test/stdlib/VarArgs.swift
@@ -6,7 +6,7 @@ import Swift
 #if _runtime(_ObjC)
   import Darwin
   import CoreGraphics
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
   typealias CGFloat = Double
 #elseif os(Windows)
diff --git a/test/stdlib/tgmath.swift.gyb b/test/stdlib/tgmath.swift.gyb
index c3382face8e38..b1144f706c930 100644
--- a/test/stdlib/tgmath.swift.gyb
+++ b/test/stdlib/tgmath.swift.gyb
@@ -19,7 +19,7 @@
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin.C.tgmath
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #elseif os(Windows)
   import MSVCRT
diff --git a/test/stdlib/tgmath_optimized.swift b/test/stdlib/tgmath_optimized.swift
index 997f11625e4cf..0501aab8cd3ab 100644
--- a/test/stdlib/tgmath_optimized.swift
+++ b/test/stdlib/tgmath_optimized.swift
@@ -6,7 +6,7 @@
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(WASI)
   import Glibc
 #elseif os(Windows)
   import MSVCRT