| Index: webrtc/rtc_base/ipaddress_unittest.cc
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| diff --git a/webrtc/rtc_base/ipaddress_unittest.cc b/webrtc/rtc_base/ipaddress_unittest.cc
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| index 3389fef0821d1586c70b6766e16a2f019b4c875d..61a067f28306b696c98f07d056134eb34fd87b50 100644
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| --- a/webrtc/rtc_base/ipaddress_unittest.cc
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| +++ b/webrtc/rtc_base/ipaddress_unittest.cc
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| @@ -672,13 +672,7 @@ TEST(IPAddressTest, TestAsIPv6Address) {
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|    EXPECT_EQ(addr, addr2);
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|  }
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|  
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| -// Disabled for UBSan: https://bugs.chromium.org/p/webrtc/issues/detail?id=5491
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| -#ifdef UNDEFINED_SANITIZER
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| -#define MAYBE_TestCountIPMaskBits DISABLED_TestCountIPMaskBits
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| -#else
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| -#define MAYBE_TestCountIPMaskBits TestCountIPMaskBits
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| -#endif
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| -TEST(IPAddressTest, MAYBE_TestCountIPMaskBits) {
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| +TEST(IPAddressTest, TestCountIPMaskBits) {
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|    IPAddress mask;
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|    // IPv4 on byte boundaries
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|    EXPECT_PRED2(CheckMaskCount, "255.255.255.255", 32);
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| 
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