Convert regress to C.

regress/.gitignore

@@ -1,3 +1,3 @@
 regress
 test-*
-!test-*.c++
+!test-*.c

regress/Makefile

@@ -5,11 +5,11 @@ include ../build-aux/version.mak
 include ../build-aux/dirs.mak
 
 OPTLEVEL?=$(DEFAULT_OPTLEVEL)
-CXXFLAGS?=$(OPTLEVEL)
+CFLAGS?=$(OPTLEVEL)
 TESTDIR?=$(LIBEXECDIR)/test
 
 CPPFLAGS:=$(CPPFLAGS) -DVERSIONSTR=\"$(VERSION)\" -DTESTDIR=\"$(TESTDIR)\"
-CXXFLAGS:=$(CXXFLAGS) -Wall -Wextra -fno-exceptions -fno-rtti
+CFLAGS:=$(CFLAGS) -Wall -Wextra
 
 BINARIES:=\
 regress \
@@ -36,8 +36,8 @@ ifneq ($(TESTS),)
 	install $(TESTS) $(DESTDIR)$(TESTDIR)
 endif
 
-%: %.c++
-	$(CXX) -std=gnu++11 $(CPPFLAGS) $(CXXFLAGS) $< -o $@
+%: %.c
+	$(CC) -std=gnu11 $(CFLAGS) $(CPPFLAGS) $< -o $@
 
 clean:
 	rm -f $(BINARIES) $(TESTS) *.o

regress/regress.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    regress.c++
+    regress.c
     Automatically invokes system tests.
 
 *******************************************************************************/
@@ -26,6 +26,7 @@
 #include <errno.h>
 #include <error.h>
 #include <fcntl.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -48,7 +49,7 @@ bool is_usable_terminal(int fd)
 	       10 <= ws.ws_col;
 }
 
-void tenth_last_column()
+void tenth_last_column(void)
 {
 	struct wincurpos wcp;
 	struct winsize ws;
@@ -153,7 +154,8 @@ int main(int argc, char* argv[])
 			break;
 		if ( arg[1] != '-' )
 		{
-			while ( char c = *++arg ) switch ( c )
+			char c;
+			while ( (c = *++arg) ) switch ( c )
 			{
 			case 'b': buffered = true; break;
 			case 'q': verbosity--; break;

regress/test-fmemopen.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-fmemopen.c++
+    test-fmemopen.c
     Tests basic fmemopen() usage.
 
 *******************************************************************************/

regress/test-pthread-argv.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-argv.c++
+    test-pthread-argv.c
     Tests if the argument vector and environment dies with the main thread.
 
 *******************************************************************************/
@@ -31,8 +31,10 @@ char** global_argv;
 char** global_envp;
 size_t answer = 0;
 
-void* thread_routine(void*)
+void* thread_routine(void* ctx)
 {
+	(void) ctx;
+
 	int errnum;
 
 	if ( (errnum = pthread_join(main_thread, NULL)) )
@@ -49,8 +51,10 @@ void* thread_routine(void*)
 	exit(0);
 }
 
-int main(int /*argc*/, char* argv[], char* envp[])
+int main(int argc, char* argv[], char* envp[])
 {
+	(void) argc;
+
 	int errnum;
 
 	for ( int i = 0; argv[i]; i++ )

regress/test-pthread-basic.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-basic.c++
+    test-pthread-basic.c
     Tests whether basic pthread support works.
 
 *******************************************************************************/

regress/test-pthread-main-join.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-main-join.c++
+    test-pthread-main-join.c
     Tests whether the main thread can be joined.
 
 *******************************************************************************/

regress/test-pthread-once.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-once.c++
+    test-pthread-once.c
     Tests whether basic pthread_once() support works.
 
 *******************************************************************************/
@@ -27,13 +27,15 @@
 static int init_counter = 0;
 static pthread_once_t init_counter_once = PTHREAD_ONCE_INIT;
 
-void init_counter_increase()
+void init_counter_increase(void)
 {
 	init_counter++;
 }
 
-void* thread_routine(void*)
+void* thread_routine(void* ctx)
 {
+	(void) ctx;
+
 	pthread_once(&init_counter_once, init_counter_increase);
 
 	return NULL;

regress/test-pthread-self.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-self.c++
+    test-pthread-self.c
     Tests whether basic pthread_self() support works.
 
 *******************************************************************************/

regress/test-pthread-tls.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-pthread-tls.c++
+    test-pthread-tls.c
     Tests whether basic tls support works.
 
 *******************************************************************************/
@@ -26,8 +26,10 @@
 
 __thread int tls_variable = 42;
 
-void* thread_routine(void*)
+void* thread_routine(void* ctx)
 {
+	(void) ctx;
+
 	test_assert(tls_variable == 42);
 
 	tls_variable = 9001;

regress/test-signal-raise.c

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    test-signal-raise.c++
+    test-signal-raise.c
     Tests whether basic raise() support works.
 
 *******************************************************************************/