From ead772324e0fb9df502022397d06150c218c9d21 Mon Sep 17 00:00:00 2001
From: uvealonso <39194608+uvealonso@users.noreply.github.com>
Date: Sun, 25 Aug 2019 23:01:33 +0100
Subject: Fix #7704: [OSX] Handle malformed UTF8 strings

---
 src/os/macosx/string_osx.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/os')

diff --git a/src/os/macosx/string_osx.cpp b/src/os/macosx/string_osx.cpp
index 6d90b91a8..4c33d5497 100644
--- a/src/os/macosx/string_osx.cpp
+++ b/src/os/macosx/string_osx.cpp
@@ -306,6 +306,13 @@ int MacOSStringCompare(const char *s1, const char *s2)
 	CFStringRef cf1 = CFStringCreateWithCString(kCFAllocatorDefault, s1, kCFStringEncodingUTF8);
 	CFStringRef cf2 = CFStringCreateWithCString(kCFAllocatorDefault, s2, kCFStringEncodingUTF8);
 
+	/* If any CFString could not be created (e.g., due to UTF8 invalid chars), return OS unsupported functionality */
+	if (cf1 == nullptr || cf2 == nullptr) {
+		if (cf1 != nullptr) CFRelease(cf1);
+		if (cf2 != nullptr) CFRelease(cf2);
+		return 0;
+	}
+
 	CFComparisonResult res = CFStringCompareWithOptionsAndLocale(cf1, cf2, CFRangeMake(0, CFStringGetLength(cf1)), flags, _osx_locale);
 
 	CFRelease(cf1);
-- 
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