diff --git a/3party/succinct/bit_vector.hpp b/3party/succinct/bit_vector.hpp
index 5ca0e7db96..164ca31e1c 100644
--- a/3party/succinct/bit_vector.hpp
+++ b/3party/succinct/bit_vector.hpp
@@ -8,6 +8,11 @@
 #include "broadword.hpp"
 #include "util.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     namespace detail {
@@ -511,3 +516,7 @@ namespace succinct {
     };
 
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/bp_vector.cpp b/3party/succinct/bp_vector.cpp
index 79df0f47f7..8114f7a2d0 100644
--- a/3party/succinct/bp_vector.cpp
+++ b/3party/succinct/bp_vector.cpp
@@ -1,6 +1,11 @@
 #include "bp_vector.hpp"
 #include "util.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     namespace {
@@ -707,3 +712,7 @@ namespace succinct {
         m_superblock_excess_min.steal(superblock_excess_min);
     }
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/darray.hpp b/3party/succinct/darray.hpp
index 79920f2f8d..04e26ccb82 100644
--- a/3party/succinct/darray.hpp
+++ b/3party/succinct/darray.hpp
@@ -2,6 +2,11 @@
 
 #include "bit_vector.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     namespace detail {
@@ -160,3 +165,7 @@ namespace succinct {
     typedef detail::darray<detail::identity_getter> darray1;
     typedef detail::darray<detail::negating_getter> darray0;
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/darray64.hpp b/3party/succinct/darray64.hpp
index 07fad2bd9d..b3dac3d739 100644
--- a/3party/succinct/darray64.hpp
+++ b/3party/succinct/darray64.hpp
@@ -3,6 +3,11 @@
 #include "bit_vector.hpp"
 #include "broadword.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     struct darray64
@@ -113,3 +118,7 @@ namespace succinct {
 
     };
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/elias_fano.hpp b/3party/succinct/elias_fano.hpp
index 4991fcc9b8..afb15accb4 100644
--- a/3party/succinct/elias_fano.hpp
+++ b/3party/succinct/elias_fano.hpp
@@ -3,6 +3,11 @@
 #include "bit_vector.hpp"
 #include "darray.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     class elias_fano {
@@ -270,5 +275,8 @@ namespace succinct {
         bit_vector m_low_bits;
         uint8_t m_l;
     };
-
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/elias_fano_compressed_list.hpp b/3party/succinct/elias_fano_compressed_list.hpp
index 51d1848710..01bc2a16f1 100644
--- a/3party/succinct/elias_fano_compressed_list.hpp
+++ b/3party/succinct/elias_fano_compressed_list.hpp
@@ -2,6 +2,11 @@
 
 #include "elias_fano.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     struct elias_fano_compressed_list
@@ -72,3 +77,7 @@ namespace succinct {
     };
 
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/gamma_vector.hpp b/3party/succinct/gamma_vector.hpp
index 7b31a249d2..7cd09ca5c2 100644
--- a/3party/succinct/gamma_vector.hpp
+++ b/3party/succinct/gamma_vector.hpp
@@ -4,6 +4,11 @@
 #include "forward_enumerator.hpp"
 #include "darray64.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
+
 namespace succinct {
 
     // Compressed random-access vector to store unsigned integers
@@ -117,3 +122,7 @@ namespace succinct {
         bit_vector::enumerator m_low_bits_enumerator;
     };
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
diff --git a/3party/succinct/mapper.hpp b/3party/succinct/mapper.hpp
index a39873307d..2b43a7083c 100644
--- a/3party/succinct/mapper.hpp
+++ b/3party/succinct/mapper.hpp
@@ -11,6 +11,10 @@
 
 #include "mappable_vector.hpp"
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#endif
 
 namespace succinct { namespace mapper {
 
@@ -303,3 +307,7 @@ namespace succinct { namespace mapper {
     }
 
 }}
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif