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hdr_histogram.c: clang 23 -Wincompatible-pointer-types will be error insteadof warning(clang 19 is warning) #66580

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hdr_histogram.c: clang 23 -Wincompatible-pointer-types will be error insteadof warning(clang 19 is warning)#66580

Description

@navegador5
navegador5
opened on Oct 7, 2026

Version

26.2.

Platform

Microsoft Windows NT 10.0.26200.0 x64

Subsystem

No response

What steps will reproduce the bug?

incompatible pointer types passing 'uint32_t *' (aka 'unsigned int *') to parameter of type 'unsigned long *' [-Wincompatible-pointer-types]
[\node260200\deps\histogram\histogram.vcxproj]
out\build\x64-release\src
out\build\x64-release\src\hdr_histogram.c 149

How often does it reproduce? Is there a required condition?

always

What is the expected behavior? Why is that the expected behavior?

no error

What do you see instead?

incompatible pointer types passing 'uint32_t *' (aka 'unsigned int *') to parameter of type 'unsigned long *'

Additional information

uint32_t leading_zero = 0; => unsigned long to MATCH _BitScanReverse(64) requirements

Activity

  1. navegador5 commented on Oct 7, 2026

    @navegador5
    navegador5
    on Oct 7, 2026
    Author
    I need to  use clang23 to `compile` nodejs  in such secarino: 
 we need expose all  winrt apis  in nodejs,   but the intrin.h of MSVC  conflict with LLVM19/clang19:[
        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.44.35207\include\emmintrin.h(325,16): error: redefinition of '__m128i' as different kind of symbol
     C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\Llvm\x64\lib\clang\19\include\emmintrin.h(4299,5): note: expanded from macro '_mm_shuffle_epi32'
]   .  
the simplest way to solve this is using clang23.
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