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getrandom: Fix compilation error in C++ mode on FreeBSD 12
From: |
Bruno Haible |
Subject: |
getrandom: Fix compilation error in C++ mode on FreeBSD 12 |
Date: |
Sat, 03 Sep 2022 02:50:06 +0200 |
On FreeBSD 12, in C++ mode, the getrandom() function is declared with C++
linkage. This leads to a compilation error in test-sys_random-c++:
In file included from ../../gltests/test-sys_random-c++.cc:22:
../gllib/sys/random.h:594:19: error: declaration of 'getrandom' has a different
language linkage
_GL_CXXALIASWARN (getrandom);
^
/usr/include/sys/random.h:160:9: note: previous declaration is here
ssize_t getrandom(void *buf, size_t buflen, unsigned int flags);
^
This patch fixes it.
2022-09-02 Bruno Haible <bruno@clisp.org>
getrandom: Fix compilation error in C++ mode on FreeBSD 12.
* lib/sys_random.in.h (getrandom): Enable the C++ alias warning only on
glibc ≥ 2.25 systems.
diff --git a/lib/sys_random.in.h b/lib/sys_random.in.h
index e730e6139f..c91bcd2cd0 100644
--- a/lib/sys_random.in.h
+++ b/lib/sys_random.in.h
@@ -84,7 +84,9 @@ _GL_FUNCDECL_SYS (getrandom, ssize_t,
_GL_CXXALIAS_SYS (getrandom, ssize_t,
(void *buffer, size_t length, unsigned int flags));
# endif
+# if __GLIBC__ + (__GLIBC_MINOR__ >= 25) > 2
_GL_CXXALIASWARN (getrandom);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef getrandom
# if HAVE_RAW_DECL_GETRANDOM
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