fix 4757.1

FarGroup · Aug 20, 2016 · 0f8ce0b · 0f8ce0b
1 parent 403eab5
commit 0f8ce0b
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Showing 3 changed files with 11 additions and 1 deletion.
diff --git a/far/changelog b/far/changelog
@@ -1,3 +1,7 @@
+drkns 20.08.2016 14:01:57 +0200 - build 4764
+
+1. Уточнение 4757.1.
+
 drkns 19.08.2016 09:45:27 +0200 - build 4763
 
 1. Уточнение 4762.

diff --git a/far/encoding.cpp b/far/encoding.cpp
@@ -801,5 +801,11 @@ size_t Utf8::get_bytes(const wchar_t* const Data, size_t const DataSize, char* c
 
 void swap_bytes(const void* const Src, void* const Dst, const size_t SizeInBytes)
 {
+	if (!SizeInBytes)
+	{
+		// Ucrt for unknown reason aggressively validates that 'source' and 'destination' are not nullptr even if 'bytes' is 0.
+		// It's safer to not call it.
+		return;
+	}
 	_swab(reinterpret_cast<char*>(const_cast<void*>(Src)), reinterpret_cast<char*>(Dst), static_cast<int>(SizeInBytes));
 }
diff --git a/far/vbuild.m4 b/far/vbuild.m4
@@ -1 +1 @@
-m4_define(BUILD,4763)m4_dnl
+m4_define(BUILD,4764)m4_dnl