diff --git a/clang/test/Driver/arm-float-abi-lto.c b/clang/test/Driver/arm-float-abi-lto.c
index 8b6d8ff6b5d7a1..bde61ce16441bb 100644
--- a/clang/test/Driver/arm-float-abi-lto.c
+++ b/clang/test/Driver/arm-float-abi-lto.c
@@ -1,3 +1,5 @@
+// FIXME: Produces a segmentation fault on AIX after the introduction of opaque pointers (D125847). 
+// UNSUPPORTED: system-aix
 // REQUIRES: arm-registered-target
 
 // RUN: %clang --target=arm-none-eabi -mcpu=cortex-m33 -mfloat-abi=hard -O1 %s -S -o - -emit-llvm -DCALL_LIB -DDEFINE_LIB | FileCheck %s