[compiler-rt][fuzzer] Explain why fuzzer-flags test is unsupported on AArch64

See https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=4d1c6335455aeeda9de8a5eb58998f919ea35a1e
for the specific change that fixes the issue.

diff --git a/compiler-rt/test/fuzzer/fuzzer-flags.test b/compiler-rt/test/fuzzer/fuzzer-flags.test
index 9712b01..5d23e66 100644 (file)
--- a/compiler-rt/test/fuzzer/fuzzer-flags.test
+++ b/compiler-rt/test/fuzzer/fuzzer-flags.test
@@ -1,4 +1,5 @@
-# Linker errors on AArch64 Linux in stage 2 build
+# Binutils < 2.32 fails with undefined reference to `__start_<...>`
+# AArch64 bots currently use 2.30.
 UNSUPPORTED: aarch64-linux
 
 RUN: %cpp_compiler %S/FlagsTest.cpp -o %t-FlagsTest