simd_math.h assumes declarations for many C99 functions to be present,
that libstdc++ doesn't add to target systems that don't have them in
the C library.
Add the C99 math requirement to tests for simd features, so that they
don't fail because of limitations of the target C library.
Regstrapped on x86_64-linux-gnu, also tested with a cross to
aarch64-rtems6. Ok to install?
for libstdc++-v3/ChangeLog
* testsuite/experimental/simd/standard_abi_usable.cc: Require
cmath support.
* testsuite/experimental/simd/standard_abi_usable_2.cc:
Likewise.
---
.../experimental/simd/standard_abi_usable.cc | 1 +
.../experimental/simd/standard_abi_usable_2.cc | 1 +
2 files changed, 2 insertions(+)
diff --git a/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable.cc
b/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable.cc
index 4d7e6726951fe..1b686d9ca095b 100644
--- a/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable.cc
+++ b/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable.cc
@@ -1,5 +1,6 @@
// { dg-options "-std=c++17 -fno-fast-math" }
// { dg-do compile { target c++17 } }
+// { dg-require-cmath "" }
// Copyright (C) 2020-2022 Free Software Foundation, Inc.
//
diff --git a/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable_2.cc
b/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable_2.cc
index a609adaf000b3..a0203d0b4238d 100644
--- a/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable_2.cc
+++ b/libstdc++-v3/testsuite/experimental/simd/standard_abi_usable_2.cc
@@ -1,4 +1,5 @@
// { dg-options "-std=c++17 -ffast-math" }
// { dg-do compile }
+// { dg-require-cmath "" }
#include "standard_abi_usable.cc"
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts. Ask me about <https://stallmansupport.org>
