*: Fix build and readme in llvm17

README.md

@@ -158,20 +158,11 @@ export CXX="/usr/bin/clang++-17"
 In MacOS, if you install llvm clang, you need to explicitly specify to use llvm clang.
 
 Add the following lines to your shell environment, e.g. `~/.bash_profile`.
-```shell
-export PATH="$(brew --prefix)/opt/llvm/bin:$PATH"
-export CC="$(brew --prefix)/opt/llvm/bin/clang"
-export CXX="$(brew --prefix)/opt/llvm/bin/clang++"
-```
 
-Or use `CMAKE_C_COMPILER` and `CMAKE_CXX_COMPILER` to specify the compiler, like this:
 ```shell
-mkdir cmake-build-debug
-cd cmake-build-debug
-
-cmake .. -GNinja -DCMAKE_BUILD_TYPE=DEBUG -DCMAKE_C_COMPILER="$(brew --prefix)/opt/llvm/bin/clang" -DCMAKE_CXX_COMPILER="$(brew --prefix)/opt/llvm/bin/clang++"
-
-ninja tiflash
+export PATH="$(brew --prefix)/opt/llvm@17/bin:$PATH"
+export CC="$(brew --prefix)/opt/llvm@17/bin/clang"
+export CXX="$(brew --prefix)/opt/llvm@17/bin/clang++"
 ```
 
 After building, you can get TiFlash binary in `dbms/src/Server/tiflash` in the `cmake-build-debug` directory.

dbms/src/Storages/DeltaMerge/tests/gtest_segment_bitmap.cpp

@@ -125,7 +125,7 @@ class SegmentBitmapFilterTest : public SegmentTestBasic
             SegmentTestBasic::writeSegment(SEG_ID, end - begin, begin);
             if (unit.pack_size)
             {
-                db_context->getSettingsRef().set("dt_segment_stable_pack_rows", *(unit.pack_size));
+                db_context->getSettingsRef().set("dt_segment_stable_pack_rows", static_cast<UInt64>(*(unit.pack_size)));
                 reloadDMContext();
                 ASSERT_EQ(dm_context->stable_pack_rows, *(unit.pack_size));
             }