Fix compilation errors in C++ mode on Haiku.

* lib/stdio.in.h (vdprintf): Disable _GL_CXXALIASWARN invocation on
non-glibc systems.
* lib/spawn.in.h (posix_spawnattr_getschedpolicy,
posix_spawnattr_setschedpolicy, posix_spawnattr_getschedparam,
posix_spawnattr_setschedparam): Likewise.
* lib/stdlib.in.h (random, initstate_r, setstate_r): Use
_GL_CXXALIAS_SYS_CAST instead of _GL_CXXALIAS_SYS.
* lib/unistd.in.h (usleep): Likewise.

5 files changed, 37 insertions, 7 deletions

diff --git a/ChangeLog b/ChangeLog
index d4ca157cf5..0bbb7249b2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,17 @@
 2019-12-08  Bruno Haible  <bruno@clisp.org>
 
+	Fix compilation errors in C++ mode on Haiku.
+	* lib/stdio.in.h (vdprintf): Disable _GL_CXXALIASWARN invocation on
+	non-glibc systems.
+	* lib/spawn.in.h (posix_spawnattr_getschedpolicy,
+	posix_spawnattr_setschedpolicy, posix_spawnattr_getschedparam,
+	posix_spawnattr_setschedparam): Likewise.
+	* lib/stdlib.in.h (random, initstate_r, setstate_r): Use
+	_GL_CXXALIAS_SYS_CAST instead of _GL_CXXALIAS_SYS.
+	* lib/unistd.in.h (usleep): Likewise.
+
+2019-12-08  Bruno Haible  <bruno@clisp.org>
+
 	Fix compilation errors in 32-bit C++ mode on HP-UX 11/ia64.
 	* m4/largefile.m4 (gl_SET_LARGEFILE_SOURCE): New macro.
 	* modules/fseeko (configure.ac-early): Require it instead of
diff --git a/lib/spawn.in.h b/lib/spawn.in.h
index 09c66f5adc..c4e1f134b8 100644
--- a/lib/spawn.in.h
+++ b/lib/spawn.in.h
@@ -604,7 +604,9 @@ _GL_CXXALIAS_SYS (posix_spawnattr_getschedpolicy, int,
                   (const posix_spawnattr_t *_Restrict_ __attr,
                    int *_Restrict_ __schedpolicy));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (posix_spawnattr_getschedpolicy);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getschedpolicy
 # if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSCHEDPOLICY
@@ -634,7 +636,9 @@ _GL_FUNCDECL_SYS (posix_spawnattr_setschedpolicy, int,
 _GL_CXXALIAS_SYS (posix_spawnattr_setschedpolicy, int,
                   (posix_spawnattr_t *__attr, int __schedpolicy));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (posix_spawnattr_setschedpolicy);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setschedpolicy
 # if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSCHEDPOLICY
@@ -668,7 +672,9 @@ _GL_CXXALIAS_SYS (posix_spawnattr_getschedparam, int,
                   (const posix_spawnattr_t *_Restrict_ __attr,
                    struct sched_param *_Restrict_ __schedparam));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (posix_spawnattr_getschedparam);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getschedparam
 # if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSCHEDPARAM
@@ -702,7 +708,9 @@ _GL_CXXALIAS_SYS (posix_spawnattr_setschedparam, int,
                   (posix_spawnattr_t *_Restrict_ __attr,
                    const struct sched_param *_Restrict_ __schedparam));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (posix_spawnattr_setschedparam);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setschedparam
 # if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSCHEDPARAM
diff --git a/lib/stdio.in.h b/lib/stdio.in.h
index 4aea52c1a7..447a4723ab 100644
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@@ -1259,7 +1259,9 @@ _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
 _GL_CXXALIAS_SYS_CAST (vdprintf, int,
                        (int fd, const char *format, va_list args));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (vdprintf);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef vdprintf
 # if HAVE_RAW_DECL_VDPRINTF
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index 2d02b4b012..5edae2c4ef 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -599,7 +599,9 @@ _GL_CXXALIAS_RPL (random, long, (void));
 #  if !@HAVE_RANDOM@
 _GL_FUNCDECL_SYS (random, long, (void));
 #  endif
-_GL_CXXALIAS_SYS (random, long, (void));
+/* Need to cast, because on Haiku, the return type is
+                               int.  */
+_GL_CXXALIAS_SYS_CAST (random, long, (void));
 # endif
 _GL_CXXALIASWARN (random);
 #elif defined GNULIB_POSIXCHECK
@@ -766,9 +768,11 @@ _GL_FUNCDECL_SYS (initstate_r, int,
                    struct random_data *rand_state)
                   _GL_ARG_NONNULL ((2, 4)));
 #  endif
-_GL_CXXALIAS_SYS (initstate_r, int,
-                  (unsigned int seed, char *buf, size_t buf_size,
-                   struct random_data *rand_state));
+/* Need to cast, because on Haiku, the third parameter is
+                                                     unsigned long buf_size.  */
+_GL_CXXALIAS_SYS_CAST (initstate_r, int,
+                       (unsigned int seed, char *buf, size_t buf_size,
+                        struct random_data *rand_state));
 # endif
 _GL_CXXALIASWARN (initstate_r);
 #elif defined GNULIB_POSIXCHECK
@@ -796,8 +800,10 @@ _GL_FUNCDECL_SYS (setstate_r, int,
                   (char *arg_state, struct random_data *rand_state)
                   _GL_ARG_NONNULL ((1, 2)));
 #  endif
-_GL_CXXALIAS_SYS (setstate_r, int,
-                  (char *arg_state, struct random_data *rand_state));
+/* Need to cast, because on Haiku, the first parameter is
+                        void *arg_state.  */
+_GL_CXXALIAS_SYS_CAST (setstate_r, int,
+                       (char *arg_state, struct random_data *rand_state));
 # endif
 _GL_CXXALIASWARN (setstate_r);
 #elif defined GNULIB_POSIXCHECK
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index c57d6f9ff3..28ab704c3b 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -1677,7 +1677,9 @@ _GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
 #  if !@HAVE_USLEEP@
 _GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
 #  endif
-_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
+/* Need to cast, because on Haiku, the first parameter is
+                                     unsigned int n.  */
+_GL_CXXALIAS_SYS_CAST (usleep, int, (useconds_t n));
 # endif
 _GL_CXXALIASWARN (usleep);
 #elif defined GNULIB_POSIXCHECK