Cannot find standard library headers of mingw gcc

[f-zl]

I've installed msvc and mingw64 gcc on my win10 machine, and only installed vscode extension "C/C++ Extension Pack" v1.1.0 with "C/C++" v1.9.8.

Cpp tools extension cannot find the standard library (say <iostream>) of mingw g++. But in quick fix, cpp tools suggest adding "D:/Program/msys64/mingw64/include/c++/11.2.0" or "D:/Program/msys64/mingw64/include/c++/11.2.0/tr1" in the includePath.

For C header <stdlib.h> in a .c file, cpp tools quick fix suggest adding "D:/Program/msys64/mingw64/include/c++/11.2.0/x86_64-w64-mingw32", which is the wrong path for the standard headers.

My c_cpp_properties.json is

{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
],
"windowsSdkVersion": "10.0.19041.0",
"cStandard": "c17",
"cppStandard": "c++17",
"intelliSenseMode": "windows-gcc-x64",
"compilerPath": "D:/Program/msys64/mingw64/bin/gcc.exe"
}
],
"version": 4
}

What should I do to make cpp tools automatically include standard library headers of mingw gcc? Thanks very much!

[Colengms]

Hi @mjs225 . Could you enable the setting "C_Cpp.loggingLevel": "Debug" and provide the output from the C/C++ output channel, leading up to the issue? It sounds like the C/C++ extension may be encountering an issue trying to configure itself against the specified compiler. The log output could contain some clues, such as error messages.

[f-zl]

loggingLevel: Debug
cpptools/didChangeCppProperties
Attempting to get defaults from C compiler in "compilerPath" property: 'D:/Program/msys64/mingw64/bin/gcc.exe'
Querying compiler for default C++ language standard using command line: "D:/Program/msys64/mingw64/bin/gcc.exe" -x c++ -E -dM nul
Detected language standard version: gnu++17
Querying compiler for default C language standard using command line: "D:/Program/msys64/mingw64/bin/gcc.exe" -x c -E -dM nul
Detected language standard version: gnu17
Querying compiler's default target using command line: "D:/Program/msys64/mingw64/bin/gcc.exe" -dumpmachine
Compiler returned default target value: x86_64-w64-mingw32
Compiler query command line: "D:/Program/msys64/mingw64/bin/gcc.exe" -std=c17 -Wp,-v -E -dM -x c -m64 nul
Code browsing service initialized
Attempting to get defaults from C++ compiler in "compilerPath" property: 'D:/Program/msys64/mingw64/bin/gcc.exe'
Compiler query command line: "D:/Program/msys64/mingw64/bin/gcc.exe" -std=c++17 -Wp,-v -E -dM -x c++ -m64 nul
Folder: D:/PROGRAM/MSYS64/MINGW64/INCLUDE/ will be indexed
Folder: D:/TEST/VSCODE/MINGW/ will be indexed
Discovering files...
Processing folder (recursive): D:/PROGRAM/MSYS64/MINGW64/INCLUDE/
Processing folder (recursive): D:/TEST/VSCODE/MINGW/
Discovering files: 25803 file(s) processed
0 file(s) removed from database
Done discovering files.
Populating include completion cache.
Parsing remaining files...
Parsing: 0 files(s) processed
Done parsing remaining files.
cpptools/getCodeActions: D:\test\vscode\mingw\hello.cpp (id: 2)
textDocument/didOpen: D:\test\vscode\mingw\hello.cpp
cpptools/textEditorSelectionChange
cpptools/getDocumentSymbols: D:\test\vscode\mingw\hello.cpp (id: 3)
cpptools/textEditorSelectionChange
cpptools/getSemanticTokens: D:\test\vscode\mingw\hello.cpp (id: 4)
cpptools/activeDocumentChange: D:\test\vscode\mingw\hello.cpp
cpptools/getDocumentSymbols
sending compilation args for D:\test\vscode\mingw\hello.cpp
include: D:\PROGRAM\MSYS64\MINGW64\INCLUDE
define: DBL_MIN_EXP=(-1021)
define: UINT_LEAST16_MAX=0xffff
define: __ATOMIC_ACQUIRE=2
define: FLT128_MAX_10_EXP=4932
define: FLT_MIN=1.17549435082228750796873653722224568e-38F
define: __GCC_IEC_559_COMPLEX=2
define: UINT_LEAST8_TYPE=unsigned char
define: SIZEOF_FLOAT80=16
define: __INTMAX_C(c)=c ## LL
define: CHAR_BIT=8
define: MINGW32=1
define: UINT8_MAX=0xff
define: SCHAR_WIDTH=8
define: _WIN64=1
define: WINT_MAX=0xffff
define: FLT32_MIN_EXP=(-125)
define: ORDER_LITTLE_ENDIAN=1234
define: SIZE_MAX=0xffffffffffffffffULL
define: WCHAR_MAX=0xffff
define: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1=1
define: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2=1
define: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4=1
define: DBL_DENORM_MIN=double(4.94065645841246544176568792868221372e-324L)
define: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8=1
define: __GCC_ATOMIC_CHAR_LOCK_FREE=2
define: __GCC_IEC_559=2
define: FLT32X_DECIMAL_DIG=17
define: FLT_EVAL_METHOD=0
define: FLT64_DECIMAL_DIG=17
define: __GCC_ATOMIC_CHAR32_T_LOCK_FREE=2
define: UINT_FAST64_MAX=0xffffffffffffffffULL
define: SIG_ATOMIC_TYPE=int
define: DBL_MIN_10_EXP=(-307)
define: FINITE_MATH_ONLY=0
define: FLT32X_MAX_EXP=1024
define: FLT32_HAS_DENORM=1
define: UINT_FAST8_MAX=0xff
define: DEC64_MAX_EXP=385
define: __INT8_C(c)=c
define: INT_LEAST8_WIDTH=8
define: UINT_LEAST64_MAX=0xffffffffffffffffULL
define: INT_LEAST8_MAX=0x7f
define: SHRT_MAX=0x7fff
define: LDBL_MAX=1.18973149535723176502126385303097021e+4932L
define: FLT64X_MAX_10_EXP=4932
define: LDBL_IS_IEC_60559=2
define: FLT64X_HAS_QUIET_NAN=1
define: UINT_LEAST8_MAX=0xff
define: __GCC_ATOMIC_BOOL_LOCK_FREE=2
define: FLT128_DENORM_MIN=6.47517511943802511092443895822764655e-4966F128
define: UINTMAX_TYPE=long long unsigned int
define: DEC32_EPSILON=1E-6DF
define: FLT_EVAL_METHOD_TS_18661_3=0
define: UINT32_MAX=0xffffffffU
define: GXX_EXPERIMENTAL_CXX0X=1
define: FLT128_MIN_EXP=(-16381)
define: WINT_MIN=0
define: FLT128_MIN_10_EXP=(-4931)
define: FLT32X_IS_IEC_60559=2
define: INT_LEAST16_WIDTH=16
define: SCHAR_MAX=0x7f
define: FLT128_MANT_DIG=113
define: WCHAR_MIN=0
define: __INT64_C(c)=c ## LL
define: __GCC_ATOMIC_POINTER_LOCK_FREE=2
define: FLT32X_MANT_DIG=53
define: __GCC_ATOMIC_CHAR16_T_LOCK_FREE=2
define: USER_LABEL_PREFIX=
define: FLT32_MAX_10_EXP=38
define: FLT64X_EPSILON=1.08420217248550443400745280086994171e-19F64x
define: STDC_HOSTED=1
define: DEC64_MIN_EXP=(-382)
define: __WIN64=1
define: DBL_DIG=15
define: FLT32_DIG=6
define: FLT_EPSILON=1.19209289550781250000000000000000000e-7F
define: GXX_WEAK=1
define: SHRT_WIDTH=16
define: FLT32_IS_IEC_60559=2
define: LDBL_MIN=3.36210314311209350626267781732175260e-4932L
define: DBL_IS_IEC_60559=2
define: DEC32_MAX=9.999999E96DF
define: FLT64X_DENORM_MIN=3.64519953188247460252840593361941982e-4951F64x
define: FLT32X_HAS_INFINITY=1
define: INT32_MAX=0x7fffffff
define: INT_WIDTH=32
define: SIZEOF_LONG=4
define: __UINT16_C(c)=c
define: DECIMAL_DIG=21
define: FLT64_EPSILON=2.22044604925031308084726333618164062e-16F64
define: INT16_MAX=0x7fff
define: FLT64_MIN_EXP=(-1021)
define: FLT64X_MIN_10_EXP=(-4931)
define: LDBL_HAS_QUIET_NAN=1
define: FLT64_MANT_DIG=53
define: _REENTRANT=1
define: FLT64X_MANT_DIG=64
define: GNUC=11
define: __GXX_RTTI=1
define: MMX=1
define: FLT_HAS_DENORM=1
define: SIZEOF_LONG_DOUBLE=16
define: BIGGEST_ALIGNMENT=16
define: STDC_UTF_16=1
define: FLT64_MAX_10_EXP=308
define: FLT32_HAS_INFINITY=1
define: DBL_MAX=double(1.79769313486231570814527423731704357e+308L)
define: INT_FAST32_MAX=0x7fffffff
define: __WINNT=1
define: DBL_HAS_INFINITY=1
define: SIZEOF_FLOAT=4
define: WINNT=1
define: __HAVE_SPECULATION_SAFE_VALUE=1
define: DEC32_MIN_EXP=(-94)
define: INTPTR_WIDTH=64
define: FLT64X_HAS_INFINITY=1
define: UINT_LEAST32_MAX=0xffffffffU
define: FLT32X_HAS_DENORM=1
define: INT_FAST16_TYPE=short int
define: STRICT_ANSI=1
define: MMX_WITH_SSE=1
define: LDBL_HAS_DENORM=1
define: __cplusplus=201703L
define: DEC32_MIN=1E-95DF
define: __DEPRECATED=1
define: DBL_MAX_EXP=1024
define: WCHAR_WIDTH=16
define: FLT32_MAX=3.40282346638528859811704183484516925e+38F32
define: DEC128_EPSILON=1E-33DL
define: SSE2_MATH=1
define: __ATOMIC_HLE_RELEASE=131072
define: WIN32=1
define: PTRDIFF_MAX=0x7fffffffffffffffLL
define: __amd64=1
define: __ATOMIC_HLE_ACQUIRE=65536
define: GNUG=11
define: LONG_LONG_MAX=0x7fffffffffffffffLL
define: SIZEOF_SIZE_T=8
define: FLT64X_MIN_EXP=(-16381)
define: SIZEOF_WINT_T=2
define: LONG_LONG_WIDTH=64
define: FLT32_MAX_EXP=128
define: __GXX_ABI_VERSION=1016
define: FLT128_HAS_INFINITY=1
define: FLT_MIN_EXP=(-125)
define: __x86_64=1
define: INT_FAST64_TYPE=long long int
define: FLT64_DENORM_MIN=4.94065645841246544176568792868221372e-324F64
define: DBL_MIN=double(2.22507385850720138309023271733240406e-308L)
define: FLT128_EPSILON=1.92592994438723585305597794258492732e-34F128
define: FLT64X_NORM_MAX=1.18973149535723176502126385303097021e+4932F64x
define: SIZEOF_POINTER=8
define: SIZE_TYPE=long long unsigned int
define: DBL_HAS_QUIET_NAN=1
define: FLT32X_EPSILON=2.22044604925031308084726333618164062e-16F32x
define: DECIMAL_BID_FORMAT=1
define: __GXX_TYPEINFO_EQUALITY_INLINE=0
define: FLT64_MIN_10_EXP=(-307)
define: FLT64X_DECIMAL_DIG=21
define: DEC128_MIN=1E-6143DL
define: REGISTER_PREFIX=
define: UINT16_MAX=0xffff
define: __cdecl=attribute((cdecl))
define: LDBL_HAS_INFINITY=1
define: FLT32_MIN=1.17549435082228750796873653722224568e-38F32
define: UINT8_TYPE=unsigned char
define: FLT_DIG=6
define: NO_INLINE=1
define: DEC_EVAL_METHOD=2
define: DEC128_MAX=9.999999999999999999999999999999999E6144DL
define: FLT_MANT_DIG=24
define: LDBL_DECIMAL_DIG=21
define: VERSION="11.2.0"
define: __UINT64_C(c)=c ## ULL
define: _WIN32=1
define: SEH=1
define: INT_LEAST32_MAX=0x7fffffff
define: __GCC_ATOMIC_INT_LOCK_FREE=2
define: FLT128_MAX_EXP=16384
define: FLT32_MANT_DIG=24
define: FLOAT_WORD_ORDER=ORDER_LITTLE_ENDIAN
define: FLT128_HAS_DENORM=1
define: FLT32_DECIMAL_DIG=9
define: FLT128_DIG=33
define: __INT32_C(c)=c
define: DEC64_EPSILON=1E-15DD
define: ORDER_PDP_ENDIAN=3412
define: DEC128_MIN_EXP=(-6142)
define: INT_FAST32_TYPE=int
define: UINT_LEAST16_TYPE=short unsigned int
define: DBL_HAS_DENORM=1
define: UINT64_MAX=0xffffffffffffffffULL
define: FLT_IS_IEC_60559=2
define: __GNUC_WIDE_EXECUTION_CHARSET_NAME="UTF-16LE"
define: FLT64X_DIG=18
define: INT8_TYPE=signed char
define: GCC_ASM_FLAG_OUTPUTS=1
define: UINT32_TYPE=unsigned int
define: FLT_RADIX=2
define: INT_LEAST16_TYPE=short int
define: LDBL_EPSILON=1.08420217248550443400745280086994171e-19L
define: __UINTMAX_C(c)=c ## ULL
define: __k8=1
define: FLT32X_MIN=2.22507385850720138309023271733240406e-308F32x
define: SIG_ATOMIC_MAX=0x7fffffff
define: __GCC_ATOMIC_WCHAR_T_LOCK_FREE=2
define: SIZEOF_PTRDIFF_T=8
define: LDBL_DIG=18
define: FLT64_IS_IEC_60559=2
define: x86_64=1
define: FLT32X_MIN_EXP=(-1021)
define: DEC32_SUBNORMAL_MIN=0.000001E-95DF
define: MSVCRT=1
define: INT_FAST16_MAX=0x7fff
define: FLT64_DIG=15
define: UINT_FAST32_MAX=0xffffffffU
define: UINT_LEAST64_TYPE=long long unsigned int
define: FLT_HAS_QUIET_NAN=1
define: FLT_MAX_10_EXP=38
define: LONG_MAX=0x7fffffffL
define: FLT64X_HAS_DENORM=1
define: DEC128_SUBNORMAL_MIN=0.000000000000000000000000000000001E-6143DL
define: FLT_HAS_INFINITY=1
define: __GNUC_EXECUTION_CHARSET_NAME="UTF-8"
define: UINT_FAST16_TYPE=short unsigned int
define: DEC64_MAX=9.999999999999999E384DD
define: INT_FAST32_WIDTH=32
define: CHAR16_TYPE=short unsigned int
define: __PRAGMA_REDEFINE_EXTNAME=1
define: SIZE_WIDTH=64
define: __SEG_FS=1
define: INT_LEAST16_MAX=0x7fff
define: DEC64_MANT_DIG=16
define: INT64_MAX=0x7fffffffffffffffLL
define: __SEG_GS=1
define: FLT32_DENORM_MIN=1.40129846432481707092372958328991613e-45F32
define: SIG_ATOMIC_WIDTH=32
define: INT_LEAST64_TYPE=long long int
define: INT16_TYPE=short int
define: INT_LEAST8_TYPE=signed char
define: SIZEOF_INT=4
define: DEC32_MAX_EXP=97
define: INT_FAST8_MAX=0x7f
define: FLT128_MAX=1.18973149535723176508575932662800702e+4932F128
define: INTPTR_MAX=0x7fffffffffffffffLL
define: FLT64_HAS_QUIET_NAN=1
define: __stdcall=attribute((stdcall))
define: FLT32_MIN_10_EXP=(-37)
define: __EXCEPTIONS=1
define: __GXX_MERGED_TYPEINFO_NAMES=0
define: PTRDIFF_WIDTH=64
define: LDBL_MANT_DIG=64
define: FLT64_HAS_INFINITY=1
define: FLT64X_MAX=1.18973149535723176502126385303097021e+4932F64x
define: STDCPP_DEFAULT_NEW_ALIGNMENT=16
define: SIG_ATOMIC_MIN=(-SIG_ATOMIC_MAX - 1)
define: __GCC_ATOMIC_LONG_LOCK_FREE=2
define: DEC32_MANT_DIG=7
define: k8=1
define: INTPTR_TYPE=long long int
define: UINT16_TYPE=short unsigned int
define: WCHAR_TYPE=short unsigned int
define: pic=1
define: UINTPTR_MAX=0xffffffffffffffffULL
define: INT_FAST64_WIDTH=64
define: INT_FAST64_MAX=0x7fffffffffffffffLL
define: __GCC_ATOMIC_TEST_AND_SET_TRUEVAL=1
define: FLT_NORM_MAX=3.40282346638528859811704183484516925e+38F
define: FLT64X_MAX_EXP=16384
define: UINT_FAST64_TYPE=long long unsigned int
define: INT_MAX=0x7fffffff
define: code_model_medium=1
define: INT64_TYPE=long long int
define: FLT_MAX_EXP=128
define: ORDER_BIG_ENDIAN=4321
define: DBL_MANT_DIG=53
define: SIZEOF_FLOAT128=16
define: INT_LEAST64_MAX=0x7fffffffffffffffLL
define: DEC64_MIN=1E-383DD
define: WINT_TYPE=short unsigned int
define: UINT_LEAST32_TYPE=unsigned int
define: SIZEOF_SHORT=2
define: FLT32_NORM_MAX=3.40282346638528859811704183484516925e+38F32
define: SSE=1
define: LDBL_MIN_EXP=(-16381)
define: FLT64_MAX=1.79769313486231570814527423731704357e+308F64
define: amd64=1
define: WINT_WIDTH=16
define: INT_LEAST64_WIDTH=64
define: LDBL_MAX_EXP=16384
define: FLT32X_MAX_10_EXP=308
define: __WIN32=1
define: SIZEOF_INT128=16
define: FLT64X_IS_IEC_60559=2
define: WCHAR_UNSIGNED=1
define: LDBL_MAX_10_EXP=4932
define: __ATOMIC_RELAXED=0
define: DBL_EPSILON=double(2.22044604925031308084726333618164062e-16L)
define: __thiscall=attribute((thiscall))
define: FLT128_MIN=3.36210314311209350626267781732175260e-4932F128
define: __UINT8_C(c)=c
define: FLT64_MAX_EXP=1024
define: INT_LEAST32_TYPE=int
define: SIZEOF_WCHAR_T=2
define: GNUC_PATCHLEVEL=0
define: FLT128_NORM_MAX=1.18973149535723176508575932662800702e+4932F128
define: FLT64_NORM_MAX=1.79769313486231570814527423731704357e+308F64
define: FLT128_HAS_QUIET_NAN=1
define: INTMAX_MAX=0x7fffffffffffffffLL
define: INT_FAST8_TYPE=signed char
define: __fastcall=attribute((fastcall))
define: FLT64X_MIN=3.36210314311209350626267781732175260e-4932F64x
define: STDCPP_THREADS=1
define: GNUC_STDC_INLINE=1
define: FLT64_HAS_DENORM=1
define: FLT32_EPSILON=1.19209289550781250000000000000000000e-7F32
define: DBL_DECIMAL_DIG=17
define: STDC_UTF_32=1
define: INT_FAST8_WIDTH=8
define: FXSR=1
define: FLT32X_MAX=1.79769313486231570814527423731704357e+308F32x
define: DBL_NORM_MAX=double(1.79769313486231570814527423731704357e+308L)
define: BYTE_ORDER=ORDER_LITTLE_ENDIAN
define: MINGW64=1
define: INTMAX_WIDTH=64
define: UINT64_TYPE=long long unsigned int
define: __UINT32_C(c)=c ## U
define: FLT_DENORM_MIN=1.40129846432481707092372958328991613e-45F
define: FLT128_IS_IEC_60559=2
define: INT8_MAX=0x7f
define: LONG_WIDTH=32
define: PIC=1
define: UINT_FAST32_TYPE=unsigned int
define: FLT32X_NORM_MAX=1.79769313486231570814527423731704357e+308F32x
define: CHAR32_TYPE=unsigned int
define: FLT_MAX=3.40282346638528859811704183484516925e+38F
define: SSE2=1
define: INT32_TYPE=int
define: SIZEOF_DOUBLE=8
define: FLT_MIN_10_EXP=(-37)
define: FLT64_MIN=2.22507385850720138309023271733240406e-308F64
define: INT_LEAST32_WIDTH=32
define: INTMAX_TYPE=long long int
define: _INTEGRAL_MAX_BITS=64
define: DEC128_MAX_EXP=6145
define: FLT32X_HAS_QUIET_NAN=1
define: __ATOMIC_CONSUME=1
define: GNUC_MINOR=2
define: INT_FAST16_WIDTH=16
define: UINTMAX_MAX=0xffffffffffffffffULL
define: FLT32X_DENORM_MIN=4.94065645841246544176568792868221372e-324F32x
define: DBL_MAX_10_EXP=308
define: LDBL_DENORM_MIN=3.64519953188247460252840593361941982e-4951L
define: __INT16_C(c)=c
define: STDC=1
define: FLT32X_DIG=15
define: PTRDIFF_TYPE=long long int
define: __ATOMIC_SEQ_CST=5
define: FLT32X_MIN_10_EXP=(-307)
define: UINTPTR_TYPE=long long unsigned int
define: DEC64_SUBNORMAL_MIN=0.000000000000001E-383DD
define: DEC128_MANT_DIG=34
define: LDBL_MIN_10_EXP=(-4931)
define: SSE_MATH=1
define: SIZEOF_LONG_LONG=8
define: FLT128_DECIMAL_DIG=36
define: __GCC_ATOMIC_LLONG_LOCK_FREE=2
define: FLT32_HAS_QUIET_NAN=1
define: FLT_DECIMAL_DIG=9
define: UINT_FAST16_MAX=0xffff
define: LDBL_NORM_MAX=1.18973149535723176502126385303097021e+4932L
define: __GCC_ATOMIC_SHORT_LOCK_FREE=2
define: UINT_FAST8_TYPE=unsigned char
define: WIN64=1
define: __ATOMIC_ACQ_REL=4
define: __ATOMIC_RELEASE=3
define: __declspec(x)=attribute((x))
define: _DEBUG
define: UNICODE
define: _UNICODE
other: --g++
other: --gnu_version=110200
stdver: c++17
intelliSenseMode: windows-gcc-x64
Checking for syntax errors: D:\test\vscode\mingw\hello.cpp
Queueing IntelliSense update for files in translation unit of: D:\test\vscode\mingw\hello.cpp
cpptools/finishUpdateSquiggles
Error squiggle count: 15
Error squiggles will be disabled in: file:///D%3A/test/vscode/mingw/hello.cpp
Update IntelliSense time (sec): 1.1
cpptools/getCodeActions: D:\test\vscode\mingw\hello.cpp (id: 5)
cpptools/getFoldingRanges: D:\test\vscode\mingw\hello.cpp (id: 6)
cpptools/getCodeActions: D:\test\vscode\mingw\hello.cpp (id: 7)
cpptools/getFoldingRanges: D:\test\vscode\mingw\hello.cpp (id: 8)

The hello.cpp is

#include <iostream>
#include <vector>
#include <string>

using namespace std;

int main()
{
    vector<string> msg {"Hello", "C++", "World", "from", "VS Code", "and the C++ extension!"};

    for (const string& word : msg)
    {
        cout << word << " ";
    }
    cout << endl;
}

[Colengms]

Hi @mjs225 . It looks like the extension has successfully queried the compiler, and provided an IntelliSense configuration to our IntelliSense parser that includes compiler-specific defines and includes. The only include path provided by the compiler is:

D:\PROGRAM\MSYS64\MINGW64\INCLUDE

However, my own local copy of MinGW returns the following paths:

  include: C:\MSYS64\MINGW64\INCLUDE\C++\11.2.0
  include: C:\MSYS64\MINGW64\INCLUDE\C++\11.2.0\X86_64-W64-MINGW32
  include: C:\MSYS64\MINGW64\INCLUDE\C++\11.2.0\BACKWARD
  include: C:\MSYS64\MINGW64\LIB\GCC\X86_64-W64-MINGW32\11.2.0\INCLUDE
  include: C:\MSYS64\MINGW64\INCLUDE
  include: C:\MSYS64\MINGW64\LIB\GCC\X86_64-W64-MINGW32\11.2.0\INCLUDE-FIXED
  include: C:\MSYS64\MINGW64\X86_64-W64-MINGW32\INCLUDE
  include: Z:\MINGW64\INCLUDE

Running the equivalent of the following command against my own install of MinGW results in display of those paths. What does the following display when you run the command directly? (Note: it's likely you will need to try this command with the current working directory set to the same bin folder, or it may fail to locate certain files it needs)

"D:/Program/msys64/mingw64/bin/gcc.exe" -std=c++17 -Wp,-v -E -x c++ -m64 nul

If the full set of system include paths are not present, there would seem to be an issue with your installation of MinGW. Is it possible you have not install the C++ (g++, etc) components of MinGW?

[f-zl]

Running "D:/Program/msys64/mingw64/bin/gcc.exe" -std=c++17 -Wp,-v -E -x c++ -m64 nul in cmd.exe gives this:

ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0"
ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0/x86_64-w64-mingw32"
ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0/backward"
ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/include"
ignoring nonexistent directory "D:/a/msys64/mingw64/include"
ignoring nonexistent directory "/mingw64/include"
ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/include-fixed"
ignoring duplicate directory "D:/Program/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/include"
ignoring nonexistent directory "D:/a/msys64/mingw64/x86_64-w64-mingw32/include"
#include "..." search starts here:
#include <...> search starts here:
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0/x86_64-w64-mingw32
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include/c++/11.2.0/backward
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/include
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../include
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/include-fixed
D:/Program/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/include
End of search list.
# 0 "nul"
# 0 ""
# 0 ""
# 1 "nul"

P.S. D:\Program\msys64\mingw64\bin\ is in the PATH and where gcc gives the right result.

[f-zl]

I've found it's the "C_Cpp.default.systemIncludePath" in the User's settings that cause the problem. At some point, I added "D:\Program\msys64\mingw64\include" to try solving the missing header problem. After removing that, the problem disappeared. Anyway, thanks very much for your help!