From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 9 Nov 2021 09:34:23 +0000 (+0000)
Subject: libstdc++: Do not use 64-bit DARN on 32-bit powerpc [PR103146]
X-Git-Tag: basepoints/gcc-13~3256
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d9ebf0ce0845046cdd0cb40c598072bd1d91362c;p=thirdparty%2Fgcc.git

libstdc++: Do not use 64-bit DARN on 32-bit powerpc [PR103146]

We need to use the 64-bit DARN to detect failure without bias, but it's
not available in 32-bit mode.

libstdc++-v3/ChangeLog:

	PR libstdc++/103146
	* src/c++11/random.cc: Check __powerpc64__ not __powerpc__.
---

diff --git a/libstdc++-v3/src/c++11/random.cc b/libstdc++-v3/src/c++11/random.cc
index 4a553e0d84fd..76857e1efe5f 100644
--- a/libstdc++-v3/src/c++11/random.cc
+++ b/libstdc++-v3/src/c++11/random.cc
@@ -37,7 +37,7 @@
 # ifdef _GLIBCXX_X86_RDSEED
 #  define USE_RDSEED 1
 # endif
-#elif defined __powerpc__ && defined __BUILTIN_CPU_SUPPORTS__
+#elif defined __powerpc64__ && defined __BUILTIN_CPU_SUPPORTS__
 # define USE_DARN 1
 #endif