gcc not work

[happytam]

Description / Steps to reproduce the issue

tam@DESKTOP-OE92IV8 UCRT64 ~
$ gcc --version
gcc.exe (Rev8, Built by MSYS2 project) 15.2.0
Copyright (C) 2025 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

tam@DESKTOP-OE92IV8 UCRT64 ~
$ cat hello.c
#include <stdio.h>

int main() {
printf("Hello, World!\n");
return 0;
}
tam@DESKTOP-OE92IV8 UCRT64 ~
$ gcc -v hello.c -o hello.exe
Using built-in specs.
COLLECT_GCC=C:\msys64\mingw64\bin\gcc.exe
COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-15.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --with-native-system-header-dir=/mingw64/include --libexecdir=/mingw64/lib --enable-bootstrap --enable-checking=release --with-arch=nocona --with-tune=generic --enable-mingw-wildcard --enable-lan
guages=c,lto,c++,fortran,ada,objc,obj-c++,jit --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-backtrace=yes --enable-libstdcxx-filesystem-ts --enable-libstdcxx-time --disable-libstdcxx-pch --enabl
e-lto --enable-libgomp --disable-libssp --disable-multilib --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev8,
Built by MSYS2 project' --with-bugurl=https://github.com/msys2/MINGW-packages/issues --with-gnu-as --with-gnu-ld --with-libstdcxx-zoneinfo=yes --disable-libstdcxx-debug --enable-plugin --with-boot-ldflags=-static-libstdc++ --with-stage1-ldflags=-static-libstdc++
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.2.0 (Rev8, Built by MSYS2 project)
COLLECT_GCC_OPTIONS='-v' '-o' 'hello.exe' '-mtune=generic' '-march=nocona'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/cc1.exe -quiet -v -iprefix C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/ -D_REENTRANT hello.c -quiet -dumpbase hello.c -dumpbase-ext .c -mtune=generic -march=nocona -version -o C:\msys64\tmp\ccR29wdc.s
GNU C23 (Rev8, Built by MSYS2 project) version 15.2.0 (x86_64-w64-mingw32)
compiled by GNU C version 15.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version isl-0.27-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include"
ignoring duplicate directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include"
ignoring nonexistent directory "D:/M/msys64/mingw64/include"
ignoring nonexistent directory "/mingw64/include"
ignoring duplicate directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed"
ignoring nonexistent directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include"
ignoring nonexistent directory "D:/M/msys64/mingw64/include"
#include "..." search starts here:
#include <...> search starts here:
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed
End of search list.
Compiler executable checksum: feaaa8b8d0ead308dc62d839201f7330
COLLECT_GCC_OPTIONS='-v' '-o' 'hello.exe' '-mtune=generic' '-march=nocona'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/bin/as.exe -v -o C:\msys64\tmp\ccCDrKCr.o C:\msys64\tmp\ccR29wdc.s

tam@DESKTOP-OE92IV8 UCRT64 ~
$ ls
hello.c

tam@DESKTOP-OE92IV8 UCRT64 ~
$

Expected behavior

output hello.exe

Actual behavior

no error ,and not found hello.exe

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

Windows 10 22H2 , OS version 19045.6332

MINGW environments affected

• MINGW64
• MINGW32
• UCRT64
• CLANG64
• CLANGARM64

Are you willing to submit a PR?

No response

[happytam]

Even when antivirus software and firewall are both turned off, it is still impossible to compile an executable file.

[Peter0x44]

Works on my machine

[kmilos]

Something wrong w/ user setup: terminal says UCRT64, but used toolchain is C:/msys64/mingw64?!

[happytam]

When I switch to the MinGW64 terminal , the same issue persists.

tam@DESKTOP-OE92IV8 MINGW64 ~
$ ls
hello.c

tam@DESKTOP-OE92IV8 MINGW64 ~
$ gcc -v hello.c -o hello.exe
Using built-in specs.
COLLECT_GCC=C:\msys64\mingw64\bin\gcc.exe
COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-15.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --with-native-system-header-dir=/mingw64/include --libexecdir=/mingw64/lib --enable-bootstrap --enable-checking=release --with-arch=nocona --with-tune=generic --enable-mingw-wildcard --enable-lan
guages=c,lto,c++,fortran,ada,objc,obj-c++,jit --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-backtrace=yes --enable-libstdcxx-filesystem-ts --enable-libstdcxx-time --disable-libstdcxx-pch --enabl
e-lto --enable-libgomp --disable-libssp --disable-multilib --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev8,
Built by MSYS2 project' --with-bugurl=https://github.com/msys2/MINGW-packages/issues --with-gnu-as --with-gnu-ld --with-libstdcxx-zoneinfo=yes --disable-libstdcxx-debug --enable-plugin --with-boot-ldflags=-static-libstdc++ --with-stage1-ldflags=-static-libstdc++
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.2.0 (Rev8, Built by MSYS2 project)
COLLECT_GCC_OPTIONS='-v' '-o' 'hello.exe' '-mtune=generic' '-march=nocona'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/cc1.exe -quiet -v -iprefix C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/ -D_REENTRANT hello.c -quiet -dumpbase hello.c -dumpbase-ext .c -mtune=generic -march=nocona -version -o C:\msys64\tmp\ccwQNU00.s
GNU C23 (Rev8, Built by MSYS2 project) version 15.2.0 (x86_64-w64-mingw32)
compiled by GNU C version 15.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version isl-0.27-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include"
ignoring duplicate directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include"
ignoring nonexistent directory "D:/M/msys64/mingw64/include"
ignoring nonexistent directory "/mingw64/include"
ignoring duplicate directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed"
ignoring nonexistent directory "C:/msys64/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include"
ignoring nonexistent directory "D:/M/msys64/mingw64/include"
#include "..." search starts here:
#include <...> search starts here:
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed
End of search list.
Compiler executable checksum: feaaa8b8d0ead308dc62d839201f7330
COLLECT_GCC_OPTIONS='-v' '-o' 'hello.exe' '-mtune=generic' '-march=nocona'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/bin/as.exe -v -o C:\msys64\tmp\cccPfnE7.o C:\msys64\tmp\ccwQNU00.s

tam@DESKTOP-OE92IV8 MINGW64 ~
$ ls
hello.c

[happytam]

Calling gcc (mingw64) from ucrt64 shell shouldn't be possible, could you show $PATH

$ echo $PATH

Maybe you changed the path.

I did add /mingw64/bin to the PATH before and removed it. I am using the ucrt64 gcc compiler, but I don't know why it still hasn't generated an executable file.

tam@DESKTOP-OE92IV8 UCRT64 ~
$ echo $PATH
/ucrt64/bin:/usr/local/bin:/usr/bin:/bin:/c/Windows/System32:/c/Windows:/c/Windows/System32/Wbem:/c/Windows/System32/WindowsPowerShell/v1.0/:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl

tam@DESKTOP-OE92IV8 UCRT64 ~
$ ls
hello.c

tam@DESKTOP-OE92IV8 UCRT64 ~
$ gcc hello.c -o hello.exe

tam@DESKTOP-OE92IV8 UCRT64 ~
$ ls
hello.c

[oltolm]

What does which gcc produce?

[happytam]

What does which gcc produce?

tam@DESKTOP-OE92IV8 UCRT64 ~
$ which gcc
/ucrt64/bin/gcc

[happytam]

Did you try a clean installation, I mean delete everything and reinstall MSYS2.

Yes, I have reinstalled, and I have only executed pacman -S --needed base-devel mingw-w64-ucrt-x86_64-toolchain. I still cannot compile the binary files.

[happytam]

Did you try a clean installation, I mean delete everything and reinstall MSYS2.

Yes, I have reinstalled, and I have only executed pacman -S --needed base-devel mingw-w64-ucrt-x86_64-toolchain. I still cannot compile the binary files.

That's not what I mean, remove MSYS2 and reinstall it again.

The uninstallation has been confirmed, and the installation directory no longer exists.