From: Abdelrazak Younes <younes@lyx.org>
Date: Wed, 18 Oct 2006 12:06:04 +0000 (+0000)
Subject: add some sanity checks.
X-Git-Tag: 1.6.10~12359
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=39acc2260d020f8a8b02889e07ca9c2b7fd74d4f;p=features.git

add some sanity checks.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15362 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/support/unicode.C b/src/support/unicode.C
index 1545e2ddc0..8779aeee8d 100644
--- a/src/support/unicode.C
+++ b/src/support/unicode.C
@@ -127,6 +127,9 @@ iconv_convert(iconv_t * cd,
 
 std::vector<lyx::char_type> utf8_to_ucs4(std::vector<char> const & utf8str)
 {
+	if (utf8str.empty())
+		return std::vector<lyx::char_type>();
+
 	return utf8_to_ucs4(&utf8str[0], utf8str.size());
 }
 
@@ -150,6 +153,9 @@ ucs2_to_ucs4(unsigned short c)
 std::vector<lyx::char_type>
 ucs2_to_ucs4(std::vector<unsigned short> const & ucs2str)
 {
+	if (ucs2str.empty())
+		return std::vector<lyx::char_type>();
+
 	return ucs2_to_ucs4(&ucs2str[0], ucs2str.size());
 }
 
@@ -173,6 +179,9 @@ ucs4_to_ucs2(lyx::char_type c)
 std::vector<unsigned short>
 ucs4_to_ucs2(std::vector<lyx::char_type> const & ucs4str)
 {
+	if (ucs4str.empty())
+		return std::vector<unsigned short>();
+
 	return ucs4_to_ucs2(&ucs4str[0], ucs4str.size());
 }
 
@@ -197,6 +206,9 @@ ucs4_to_utf8(lyx::char_type c)
 std::vector<char>
 ucs4_to_utf8(std::vector<lyx::char_type> const & ucs4str)
 {
+	if (ucs4str.empty())
+		return std::vector<char>();
+
 	return ucs4_to_utf8(&ucs4str[0], ucs4str.size());
 }