From d0ea3799ffe72003dc03674130a03eb83f96ce53 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Jun 22 2017 23:27:15 +0000
Subject: iconv regression test


---

diff --git a/src/regression/iconv-roundtrips.c b/src/regression/iconv-roundtrips.c
new file mode 100644
index 0000000..279d25b
--- /dev/null
+++ b/src/regression/iconv-roundtrips.c
@@ -0,0 +1,59 @@
+// commit: b7bfb5c3a8330002250f304cb5deb522fa054eae
+// fix iconv conversions for iso88592-iso885916
+#include <iconv.h>
+#include <string.h>
+#include "test.h"
+
+int main(void)
+{
+	static char *test_charsets[] = {
+		"iso-8859-1",
+		"iso-8859-2",
+		"iso-8859-4",
+		"iso-8859-5",
+		"iso-8859-9",
+		"iso-8859-10",
+		"iso-8859-13",
+		"iso-8859-14",
+		"iso-8859-15",
+		"iso-8859-16",
+		0
+	};
+	char all_codepoints[256];
+	int i;
+
+	for (i=0; i<256; i++)
+		all_codepoints[i] = 255-i;
+
+	for (i=0; test_charsets[i]; i++) {
+		iconv_t there = iconv_open("UTF-8", test_charsets[i]);
+		if (there == (iconv_t)-1) continue;
+		iconv_t andback = iconv_open(test_charsets[i], "UTF-8");
+		if (andback == (iconv_t)-1) {
+			iconv_close(there);
+			continue;
+		}
+		char u8buf[1024];
+		char buf[256];
+		size_t u8rem = sizeof u8buf;
+		int r1 = iconv(there,
+			&(char *){all_codepoints}, &(size_t){sizeof all_codepoints},
+			&(char *){u8buf}, &u8rem);
+		size_t u8len = sizeof u8buf - u8rem;
+		int r2 = iconv(andback,
+			&(char *){u8buf}, &(size_t){u8len},
+			&(char *){buf}, &(size_t){sizeof buf});
+
+		if (r1) t_error("got %d converting from %s\n", r1, test_charsets[i]);
+		if (r2) t_error("got %d converting back to %s\n", r2, test_charsets[i]);
+
+		if (memcmp(all_codepoints, buf, sizeof buf)) {
+			t_error("round trip corrupted %s characters\n", test_charsets[i]);
+		}
+
+		iconv_close(there);
+		iconv_close(andback);
+	}
+
+	return t_status;
+}