From: Jonathan Wakely <jwakely@redhat.com>
To: libstdc++@gcc.gnu.org, gcc-patches@gcc.gnu.org
Cc: hp@gcc.gnu.org, ppalka@redhat.com
Subject: [committed 2/2] libstdc++: Use GCC's predefined macro for endianness [PR104080]
Date: Tue, 18 Jan 2022 10:12:20 +0000 [thread overview]
Message-ID: <20220118101220.3578219-2-jwakely@redhat.com> (raw)
In-Reply-To: <20220118101220.3578219-1-jwakely@redhat.com>
Tested x86_64-linux, pushed to trunk.
Instead of hardcoded preprocessor conditionals with explicit target
checks, just rely on the fact that __BYTE_ORDER__ is always defined by
GCC.
libstdc++-v3/ChangeLog:
PR libstdc++/104080
* src/c++17/fast_float/LOCAL_PATCHES: Update.
* src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
Define in terms of __BYTE_ORDER__.
---
libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES | 1 +
libstdc++-v3/src/c++17/fast_float/fast_float.h | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
index 447c7ed2cdb..5bb42933398 100644
--- a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
+++ b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
@@ -1,3 +1,4 @@
r12-6647
r12-6648
r12-6664
+r12-6665
diff --git a/libstdc++-v3/src/c++17/fast_float/fast_float.h b/libstdc++-v3/src/c++17/fast_float/fast_float.h
index ee129309ba3..31fb88b8aba 100644
--- a/libstdc++-v3/src/c++17/fast_float/fast_float.h
+++ b/libstdc++-v3/src/c++17/fast_float/fast_float.h
@@ -128,7 +128,9 @@ from_chars_result from_chars_advanced(const char *first, const char *last,
#define FASTFLOAT_VISUAL_STUDIO 1
#endif
-#ifdef _WIN32
+#ifdef __BYTE_ORDER__
+#define FASTFLOAT_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#elif defined _WIN32
#define FASTFLOAT_IS_BIG_ENDIAN 0
#else
#if defined(__APPLE__) || defined(__FreeBSD__)
--
2.31.1
next prev parent reply other threads:[~2022-01-18 10:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 10:12 [committed 1/2] libstdc++: Fix deduction failure for std::min call [PR104080] Jonathan Wakely
2022-01-18 10:12 ` Jonathan Wakely [this message]
2022-01-18 19:44 ` [committed 2/2] libstdc++: Use GCC's predefined macro for endianness [PR104080] Patrick Palka
2022-01-18 20:01 ` Patrick Palka
2022-01-18 20:51 ` Jonathan Wakely
2022-01-18 20:10 ` Jakub Jelinek
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