Index: compiler-rt/test/builtins/Unit/compiler_rt_scalbn_test.c
===================================================================
--- compiler-rt/test/builtins/Unit/compiler_rt_scalbn_test.c
+++ compiler-rt/test/builtins/Unit/compiler_rt_scalbn_test.c
@@ -62,8 +62,9 @@
 #if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP) || \
     defined(__i386__) || defined(__x86_64__)
 // Skip these tests for MSVC because its scalbn function always behaves as if
-// the default rounding mode is set (FE_TONEAREST).
-#ifndef _MSC_VER
+// the default rounding mode is set (FE_TONEAREST), and for newlib because the
+// implementation can give different results in certain cases.
+#if !defined(_MSC_VER) && !defined(_NEWLIB_VERSION)
   fesetround(FE_UPWARD);
   if (iterate_cases("FE_UPWARD")) return 1;
 
Index: compiler-rt/test/builtins/Unit/compiler_rt_scalbnf_test.c
===================================================================
--- compiler-rt/test/builtins/Unit/compiler_rt_scalbnf_test.c
+++ compiler-rt/test/builtins/Unit/compiler_rt_scalbnf_test.c
@@ -60,9 +60,10 @@
   // should have the same rounding behavior as single-precision multiplication.
 #if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP) || \
     defined(__i386__) || defined(__x86_64__)
-// Skip these tests for MSVC because its scalbnf function always behaves as if
-// the default rounding mode is set (FE_TONEAREST).
-#ifndef _MSC_VER
+// Skip these tests for MSVC because its scalbn function always behaves as if
+// the default rounding mode is set (FE_TONEAREST), and for newlib because the
+// implementation can give different results in certain cases.
+#if !defined(_MSC_VER) && !defined(_NEWLIB_VERSION)
   fesetround(FE_UPWARD);
   if (iterate_cases("FE_UPWARD")) return 1;