c32is*: Avoid test failures on MidnightBSD

[Bruno Haible]

MidnightBSD is a FreeBSD derivative [1]. At the uname level, it identifies
itself as "MidnightBSD", but on the preprocessor level it merely defines
__FreeBSD__.

I see a couple of test failures on MidnightBSD 1.1:

FAIL: test-c32isalnum.sh
========================

../../gltests/test-c32isalnum.c:155: assertion 'is != 0' failed
Abort trap
FAIL test-c32isalnum.sh (exit status: 1)

FAIL: test-c32isalpha.sh
========================

../../gltests/test-c32isalpha.c:153: assertion 'is != 0' failed
Abort trap
FAIL test-c32isalpha.sh (exit status: 1)

FAIL: test-c32isblank.sh
========================

../../gltests/test-c32isblank.c:107: assertion 'is == 0' failed
Abort trap
FAIL test-c32isblank.sh (exit status: 1)

FAIL: test-c32islower.sh
========================

../../gltests/test-c32islower.c:162: assertion 'is != 0' failed
Abort trap
FAIL test-c32islower.sh (exit status: 1)

FAIL: test-c32isupper.sh
========================

../../gltests/test-c32isupper.c:157: assertion 'is != 0' failed
Abort trap
FAIL test-c32isupper.sh (exit status: 1)

This patch fixes them.

[1] https://en.wikipedia.org/wiki/MidnightBSD


2021-02-07  Bruno Haible  <bruno@clisp.org>

        c32is*: Avoid test failures on MidnightBSD.
        * tests/test-c32isalnum.c (main): On FreeBSD, disable tests that fail on
        MidnightBSD 1.1.
        * tests/test-c32isalpha.c (main): Likewise.
        * tests/test-c32isblank.c (main): Likewise.
        * tests/test-c32islower.c (main): Likewise.
        * tests/test-c32isupper.c (main): Likewise.

diff --git a/tests/test-c32isalnum.c b/tests/test-c32isalnum.c
index 3720810..8f61ad9 100644
--- a/tests/test-c32isalnum.c
+++ b/tests/test-c32isalnum.c
@@ -149,7 +149,7 @@ main (int argc, char *argv[])
           /* U+00D7 MULTIPLICATION SIGN */
           is = for_character ("\241\337", 2);
           ASSERT (is == 0);
-        #if !(defined __APPLE__ && defined __MACH__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__)
           /* U+00D8 LATIN CAPITAL LETTER O WITH STROKE */
           is = for_character ("\217\251\254", 3);
           ASSERT (is != 0);
@@ -165,7 +165,7 @@ main (int argc, char *argv[])
           is = for_character ("\243\261", 2);
           ASSERT (is != 0);
         #endif
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+FF4D FULLWIDTH LATIN SMALL LETTER M */
           is = for_character ("\243\355", 2);
           ASSERT (is != 0);
diff --git a/tests/test-c32isalpha.c b/tests/test-c32isalpha.c
index 5be0178..9b07186 100644
--- a/tests/test-c32isalpha.c
+++ b/tests/test-c32isalpha.c
@@ -147,7 +147,7 @@ main (int argc, char *argv[])
           /* U+00D7 MULTIPLICATION SIGN */
           is = for_character ("\241\337", 2);
           ASSERT (is == 0);
-        #if !(defined __APPLE__ && defined __MACH__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__)
           /* U+00D8 LATIN CAPITAL LETTER O WITH STROKE */
           is = for_character ("\217\251\254", 3);
           ASSERT (is != 0);
@@ -163,7 +163,7 @@ main (int argc, char *argv[])
           is = for_character ("\243\261", 2);
           ASSERT (is == 0);
         #endif
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+FF4D FULLWIDTH LATIN SMALL LETTER M */
           is = for_character ("\243\355", 2);
           ASSERT (is != 0);
diff --git a/tests/test-c32isblank.c b/tests/test-c32isblank.c
index 984d0d8..a615388 100644
--- a/tests/test-c32isblank.c
+++ b/tests/test-c32isblank.c
@@ -74,7 +74,7 @@ main (int argc, char *argv[])
       switch (c)
         {
         case '\t':
-        #if !defined __NetBSD__
+        #if !(defined __FreeBSD__ || defined __NetBSD__)
         case '\v':
         #endif
         case '\f':
diff --git a/tests/test-c32islower.c b/tests/test-c32islower.c
index 8bcffaf..0b811fd 100644
--- a/tests/test-c32islower.c
+++ b/tests/test-c32islower.c
@@ -156,12 +156,12 @@ main (int argc, char *argv[])
           /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
           is = for_character ("\217\252\261", 3);
           ASSERT (is == 0);
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__ || 
defined __CYGWIN__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__ || defined __CYGWIN__)
           /* U+00DF LATIN SMALL LETTER SHARP S */
           is = for_character ("\217\251\316", 3);
           ASSERT (is != 0);
         #endif
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
           is = for_character ("\217\253\261", 3);
           ASSERT (is != 0);
@@ -172,7 +172,7 @@ main (int argc, char *argv[])
           /* U+0141 LATIN CAPITAL LETTER L WITH STROKE */
           is = for_character ("\217\251\250", 3);
           ASSERT (is == 0);
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+0142 LATIN SMALL LETTER L WITH STROKE */
           is = for_character ("\217\251\310", 3);
           ASSERT (is != 0);
@@ -269,7 +269,7 @@ main (int argc, char *argv[])
           /* U+00B2 SUPERSCRIPT TWO */
           is = for_character ("\201\060\205\065", 4);
           ASSERT (is == 0);
-        #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || 
defined __NetBSD__)
+        #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || 
defined __FreeBSD__ || defined __NetBSD__)
           /* U+00B5 MICRO SIGN */
           is = for_character ("\201\060\205\070", 4);
           ASSERT (is == 0);
diff --git a/tests/test-c32isupper.c b/tests/test-c32isupper.c
index 05b969d..5604a8f 100644
--- a/tests/test-c32isupper.c
+++ b/tests/test-c32isupper.c
@@ -151,7 +151,7 @@ main (int argc, char *argv[])
       case '2':
         /* Locale encoding is EUC-JP.  */
         {
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
           is = for_character ("\217\252\261", 3);
           ASSERT (is != 0);
@@ -165,7 +165,7 @@ main (int argc, char *argv[])
           /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
           is = for_character ("\217\253\363", 3);
           ASSERT (is == 0);
-        #if !((defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ 
|| defined __NetBSD__)
           /* U+0141 LATIN CAPITAL LETTER L WITH STROKE */
           is = for_character ("\217\251\250", 3);
           ASSERT (is != 0);