Add tests for the functions in <stdio_ext.h>.

regress/lib/libc/stdio/Makefile

@@ -1,8 +1,26 @@
-# $OpenBSD: Makefile,v 1.1 2025/05/24 11:07:20 yasuoka Exp $
+# $OpenBSD: Makefile,v 1.2 2025/05/25 00:20:54 yasuoka Exp $
 
 PROGS=		test_fflush
-
 CLEANFILES=	test_fflush.tmp
+
+PROGS+=		test___freading
+CLEANFILES+=	test___freading.tmp
+
+PROGS+=		test___fwriting
+CLEANFILES+=	test___fwriting.tmp
+
+PROGS+=		test___fpending
+CLEANFILES+=	test___fpending.tmp
+
+PROGS+=		test___freadahead
+CLEANFILES+=	test___freadahead.tmp
+
+PROGS+=		test___freadptr
+CLEANFILES+=	test___freadptr.tmp
+
+PROGS+=		test___fseterr
+CLEANFILES+=	test___fseterr.tmp
+
 WARNINGS=	yes
 
 # until fflush comply POSIX-2008

regress/lib/libc/stdio/test___fpending.c

@@ -0,0 +1,58 @@
+/*	$OpenBSD: test___fpending.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___fpending.tmp"
+
+void test___fpending0(void);
+
+void
+test___fpending0(void)
+{
+	FILE	*fp;
+	int	 r;
+	size_t	 s;
+
+	fp = fopen(TMPFILENAME, "w");
+	assert(fp != NULL);
+	r = fputs("Hello world", fp);
+	assert(r >= 0);
+	s = __fpending(fp);
+	assert(s > 0);		/* assume buffered */
+	r = fflush(fp);
+	assert(r == 0);
+	s = __fpending(fp);
+	assert(s == 0);		/* buffer must be 0 */
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___fpending0();
+
+	exit(0);
+}

regress/lib/libc/stdio/test___freadahead.c

@@ -0,0 +1,71 @@
+/*	$OpenBSD: test___freadahead.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___freadahead.tmp"
+
+void test___freadahead0(void);
+
+void
+test___freadahead0(void)
+{
+	FILE	*fp;
+	int	 r;
+	size_t	 s;
+
+	fp = fopen(TMPFILENAME, "w");
+	assert(fp != NULL);
+	r = fputs("Hello world", fp);
+	assert(r >= 0);
+	r = fclose(fp);
+
+	fp = fopen(TMPFILENAME, "r");
+	s = __freadahead(fp);
+	assert(s == 0);
+	assert(fgetc(fp) == 'H');
+	s = __freadahead(fp);
+	assert(s == 10);
+	r = fflush(fp);
+#if 1
+	/* fflush() to reading file is not supported (yet) */
+	assert(errno == EBADF);
+#else
+	assert(r == 0);
+	s = __freadahead(fp);
+	assert(s == 0);
+#endif
+
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___freadahead0();
+
+	exit(0);
+}

regress/lib/libc/stdio/test___freading.c

@@ -0,0 +1,85 @@
+/*	$OpenBSD: test___freading.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___freading.tmp"
+
+void test___freading0(void);
+void test___freading1(void);
+
+void
+test___freading0(void)
+{
+	FILE	*fp;
+	int	 r;
+	char	 buf[80];
+
+	fp = popen("echo Hello world", "r");
+	assert(fp != NULL);
+	assert(__freading(fp) != 0);
+	assert(fgets(buf, sizeof(buf), fp) != NULL);
+	assert(strcmp(buf, "Hello world\n") == 0);
+	r = pclose(fp);
+	assert(r == 0);
+}
+
+void
+test___freading1(void)
+{
+	FILE	*fp;
+	int	 r;
+
+	/* when the last operaiton is read, __freading() returns true */
+	fp = fopen(TMPFILENAME, "w+");
+	assert(fp != NULL);
+	assert(__freading(fp) == 0);
+	r = fputs("Hello world\n", fp);
+	assert(r >= 0);
+	assert(__freading(fp) == 0);
+	rewind(fp);
+	assert(fgetc(fp) == 'H');
+	assert(__freading(fp) != 0);
+	/* write */
+	fseek(fp, 0, SEEK_END);
+	r = fputs("\n", fp);
+	assert(__freading(fp) == 0);
+	/* ungetc */
+	rewind(fp);
+	assert(ungetc('X', fp) != 0);
+	assert(__freading(fp) != 0);	/* reading */
+
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___freading0();
+	test___freading1();
+
+	exit(0);
+}

regress/lib/libc/stdio/test___freadptr.c

@@ -0,0 +1,78 @@
+/*	$OpenBSD: test___freadptr.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___freadptr.tmp"
+
+void test___freadptr0(void);
+
+/* test __freadptr() and __freadptrinc() */
+void
+test___freadptr0(void)
+{
+	FILE		*fp;
+	int		 r;
+	ssize_t		 s;
+	const char	*p;
+
+	fp = fopen(TMPFILENAME, "w");
+	assert(fp != NULL);
+	r = fputs("Hello world", fp);
+	assert(r >= 0);
+	r = fclose(fp);
+
+	fp = fopen(TMPFILENAME, "r");
+	assert(fgetc(fp) == 'H');
+	p = __freadptr(fp, &s);
+	assert(p != NULL);
+	assert(s > 4);		/* this test assume this (not by the spec) */
+	assert(*p == 'e');
+	assert(strncmp(p, "ello world", s) == 0);
+
+	__freadptrinc(fp, 4);
+	assert(fgetc(fp) == ' ');
+
+	ungetc('A', fp);
+	ungetc('A', fp);
+	ungetc('A', fp);
+	p = __freadptr(fp, &s);
+	assert(s > 0);
+	assert(*p == 'A');
+	/* ptr will contains only the pushback buffer */
+	assert(strncmp(p, "AAAworld", s) == 0);
+
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___freadptr0();
+
+	exit(0);
+}

regress/lib/libc/stdio/test___fseterr.c

@@ -0,0 +1,60 @@
+/*	$OpenBSD: test___fseterr.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___fseterr.tmp"
+
+void test___fseterr0(void);
+
+void
+test___fseterr0(void)
+{
+	FILE	*fp;
+	int	 r;
+
+	fp = fopen(TMPFILENAME, "w+");
+	assert(fp != NULL);
+
+	assert(!ferror(fp));
+
+	r = fprintf(fp, "hello world\n");
+	assert(r > 0);
+
+	__fseterr(fp);
+	assert(ferror(fp));
+
+	r = fprintf(fp, "hello world\n");
+	assert(r == -1);
+
+	fclose(fp);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___fseterr0();
+
+	exit(0);
+}

regress/lib/libc/stdio/test___fwriting.c

@@ -0,0 +1,83 @@
+/*	$OpenBSD: test___fwriting.c,v 1.1 2025/05/25 00:20:54 yasuoka Exp $	*/
+
+/*
+ * Copyright (c) 2025 YASUOKA Masahiko <yasuoka@yasuoka.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+
+/* we use assert() */
+#undef	NDEBUG
+
+#define	TMPFILENAME	"test___fwriting.tmp"
+
+void test___fwriting0(void);
+void test___fwriting1(void);
+
+void
+test___fwriting0(void)
+{
+	FILE	*fp;
+	int	 r;
+
+	fp = fopen(TMPFILENAME, "w");	/* write only */
+	assert(fp != NULL);
+	assert(__fwriting(fp) != 0);	/* writing is true immediately */
+	r = fputs("Hello world\n", fp);
+	assert(r >= 0);
+	r = fclose(fp);
+	assert(r == 0);
+
+	fp = fopen(TMPFILENAME, "a");	/* append only */
+	assert(fp != NULL);
+	assert(__fwriting(fp) != 0);	/* writing immediately */
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+void
+test___fwriting1(void)
+{
+	FILE	*fp;
+	int	 r;
+
+	fp = fopen(TMPFILENAME, "w+");	/* read / write */
+	assert(fp != NULL);
+	r = fputs("Hello world\n", fp);
+	assert(r >= 0);
+	assert(__fwriting(fp) != 0);
+	rewind(fp);
+	assert(fgetc(fp) == 'H');	/* read */
+	assert(__fwriting(fp) == 0);	/* writing becomes false */
+	fputc('e', fp);
+	assert(__fwriting(fp) != 0);	/* writing becomes true */
+	ungetc('e', fp);
+	assert(__fwriting(fp) == 0);	/* ungetc -> writing becomes false */
+
+	r = fclose(fp);
+	assert(r == 0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	test___fwriting0();
+	test___fwriting1();
+
+	exit(0);
+}