https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120192
Bug ID: 120192
Summary: Internal compiler error when building ring Rust crate
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: filip.stamcar at hotmail dot com
Target Milestone: ---
When building a Rust project that depends on a ring
(https://github.com/briansmith/ring) Rust crate using
`stable-x86_64-pc-windows-gnu` toolchain on Windows, I get internal compiler
error:
❯ cargo build
Compiling yoke v0.7.5
Compiling socket2 v0.5.9
Compiling mio v1.0.3
Compiling darling_macro v0.20.11
Compiling dioxus-core v0.6.3
Compiling gemm-common v0.17.1
Compiling ring v0.17.14
Compiling aho-corasick v1.1.3
Compiling rustls-pki-types v1.11.0
Compiling indexmap v2.9.0
Compiling phf v0.11.3
Compiling untrusted v0.9.0
Compiling precomputed-hash v0.1.1
warning: ring@0.17.14: during RTL pass: expand
warning: ring@0.17.14: In file included from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/internal.h:20,
warning: ring@0.17.14: from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/curve25519.c:24:
warning: ring@0.17.14:
E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:
In function 'constant_time_conditional_memxor':
warning: ring@0.17.14:
E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:260:20:
internal compiler error: in expand_one_stack_var_1, at cfgexpand.cc:1738
warning: ring@0.17.14: 260 | static inline void
constant_time_conditional_memxor(void *dst, const void *src,
warning: ring@0.17.14: |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
warning: ring@0.17.14: Please submit a full bug report, with
preprocessed source (by using -freport-bug).
warning: ring@0.17.14: See <https://github.com/niXman/mingw-builds> for
instructions.
error: failed to run custom build command for `ring v0.17.14`
Caused by:
process didn't exit successfully:
`E:\Projects\School\SrednjeveskiArhivi\target\debug\build\ring-f4c4918d144c179c\build-script-build`
(exit code: 1)
--- stdout
cargo:rerun-if-env-changed=CARGO_MANIFEST_DIR
cargo:rerun-if-env-changed=CARGO_PKG_NAME
cargo:rerun-if-env-changed=CARGO_PKG_VERSION_MAJOR
cargo:rerun-if-env-changed=CARGO_PKG_VERSION_MINOR
cargo:rerun-if-env-changed=CARGO_PKG_VERSION_PATCH
cargo:rerun-if-env-changed=CARGO_PKG_VERSION_PRE
cargo:rerun-if-env-changed=CARGO_MANIFEST_LINKS
cargo:rerun-if-env-changed=RING_PREGENERATE_ASM
cargo:rerun-if-env-changed=OUT_DIR
cargo:rerun-if-env-changed=CARGO_CFG_TARGET_ARCH
cargo:rerun-if-env-changed=CARGO_CFG_TARGET_OS
cargo:rerun-if-env-changed=CARGO_CFG_TARGET_ENV
cargo:rerun-if-env-changed=CARGO_CFG_TARGET_ENDIAN
OPT_LEVEL = Some(0)
OUT_DIR =
Some(E:\Projects\School\SrednjeveskiArhivi\target\debug\build\ring-2f9bf6e1f47e27e4\out)
TARGET = Some(x86_64-pc-windows-gnu)
HOST = Some(x86_64-pc-windows-gnu)
cargo:rerun-if-env-changed=CC_x86_64-pc-windows-gnu
CC_x86_64-pc-windows-gnu = None
cargo:rerun-if-env-changed=CC_x86_64_pc_windows_gnu
CC_x86_64_pc_windows_gnu = None
cargo:rerun-if-env-changed=HOST_CC
HOST_CC = None
cargo:rerun-if-env-changed=CC
CC = None
cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
RUSTC_WRAPPER = None
cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some(true)
CARGO_CFG_TARGET_FEATURE =
Some(adx,aes,avx,avx2,bmi1,bmi2,cmpxchg16b,f16c,fma,fxsr,lzcnt,movbe,pclmulqdq,popcnt,rdrand,rdseed,sha,sse,sse2,sse3,sse4.1,sse4.2,ssse3,xsave,xsavec,xsaveopt,xsaves)
cargo:rerun-if-env-changed=CFLAGS
CFLAGS = Some(-march=native)
cargo:rerun-if-env-changed=CC_SHELL_ESCAPED_FLAGS
CC_SHELL_ESCAPED_FLAGS = None
cargo:rerun-if-env-changed=HOST_CFLAGS
HOST_CFLAGS = None
cargo:rerun-if-env-changed=CFLAGS_x86_64_pc_windows_gnu
CFLAGS_x86_64_pc_windows_gnu = None
cargo:rerun-if-env-changed=CFLAGS_x86_64-pc-windows-gnu
CFLAGS_x86_64-pc-windows-gnu = None
CARGO_ENCODED_RUSTFLAGS = Some(-Ctarget-cpu=native)
cargo:warning=during RTL pass: expand
cargo:warning=In file included from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/internal.h:20,
cargo:warning= from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/curve25519.c:24:
cargo:warning=E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:
In function 'constant_time_conditional_memxor':
cargo:warning=E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:260:20:
internal compiler error: in expand_one_stack_var_1, at cfgexpand.cc:1738
cargo:warning= 260 | static inline void
constant_time_conditional_memxor(void *dst, const void *src,
cargo:warning= |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cargo:warning=Please submit a full bug report, with preprocessed
source (by using -freport-bug).
cargo:warning=See <https://github.com/niXman/mingw-builds> for
instructions.
--- stderr
error occurred in cc-rs: command did not execute successfully (status
code exit code: 1): "gcc.exe" "-O0" "-ffunction-sections" "-fdata-sections"
"-gdwarf-2" "-fno-omit-frame-pointer" "-m64" "-I"
"E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\include"
"-I" "E:\\Cac
he\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\pregenerated"
"-fvisibility=hidden" "-std=c1x" "-Wall" "-Wbad-function-cast" "-Wcast-align"
"-Wcast-qual" "-Wconversion" "-Wmissing-field-initializers"
"-Wmissing-include-dirs" "-Wnested-externs" "-Wredundant-decls" "-Wshadow" "
-Wsign-compare" "-Wsign-conversion" "-Wstrict-prototypes" "-Wundef"
"-Wuninitialized" "-g3" "-DNDEBUG" "-march=native" "-o"
"E:\\Projects\\School\\SrednjeveskiArhivi\\target\\debug\\build\\ring-2f9bf6e1f47e27e4\\out\\73090ba2100ad232-curve25519.o"
"-c"
"E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\crypto/curve25519/curve25519.c"
warning: build failed, waiting for other jobs to finish...
Running GCC directly also fails:
❯ "gcc.exe" "-O0" "-ffunction-sections" "-fdata-sections" "-gdwarf-2"
"-fno-omit-frame-pointer" "-m64" "-I"
"E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\include"
"-I"
"E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\pregenerated"
"-fvisibility=hidden" "-std=c1x" "-Wall" "-Wbad-function-cast" "-Wcast-align"
"-Wcast-qual" "-Wconversion" "-Wmissing-field-initializers"
"-Wmissing-include-dirs" "-Wnested-externs" "-Wredundant-decls" "-Wshadow"
"-Wsign-compare" "-Wsign-conversion" "-Wstrict-prototypes" "-Wundef"
"-Wuninitialized" "-g3" "-DNDEBUG" "-march=native" "-o"
"E:\\Projects\\School\\SrednjeveskiArhivi\\target\\debug\\build\\ring-2f9bf6e1f47e27e4\\out\\73090ba2100ad232-curve25519.o"
"-c"
"E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\crypto/curve25519/curve25519.c"
"-freport-bug"
during RTL pass: expand
In file included from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/internal.h:20,
from
E:\Cache\rust\cargo\registry\src\index.crates.io-1949cf8c6b5b557f\ring-0.17.14\crypto/curve25519/curve25519.c:24:
E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:
In function 'constant_time_conditional_memxor':
E:/Cache/rust/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ring-0.17.14/crypto/internal.h:260:20:
internal compiler error: in expand_one_stack_var_1, at cfgexpand.cc:1738
260 | static inline void constant_time_conditional_memxor(void *dst,
const void *src,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please submit a full bug report, with preprocessed source.
See <https://github.com/niXman/mingw-builds> for instructions.
gcc.exe: fatal error: cannot execute 'C:/Program
Files/MinGW/bin/../libexec/gcc/x86_64-w64-mingw32/15.1.0/cc1.exe': open
temporary output file
compilation terminated.
I am using GCC from MinGW Builds (https://github.com/niXman/mingw-builds)
project on Windows 11. This is my GCC version:
❯ gcc --version
gcc.exe (x86_64-posix-seh-rev0, Built by MinGW-Builds project) 15.1.0
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.
I've already reported this bug to the MinGW Builds project
(https://github.com/niXman/mingw-builds/issues/706), but they recommended
reporting it here.
