Source: gcc-15 Version: 15.2.0-5 Severity: normal Control: affects -1 src:scipy
m68k is failing to build scipy. Both scipy 1.15.3 and 1.16.2 are affected https://buildd.debian.org/status/fetch.php?pkg=scipy&arch=m68k&ver=1.15.3-1.1&stamp=1757118702&raw=0 https://buildd.debian.org/status/fetch.php?pkg=scipy&arch=m68k&ver=1.16.2-1exp2&stamp=1760305910&raw=0 The error is coming via cython, but cython itself has not changed, suggesting the problem might be a regression in gcc-15. And the error log does contain a GCC DUMP For 1.16.2 the redacted error message is [96/1448] cc -Iscipy/lib_fortranobject.a.p -Iscipy -I../scipy -I../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/_core/include -I../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/f2py/src -I/usr/include/python3.13 -I/usr/include/m68k-linux-gnu/python3.13 -fvisibility=hidden -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c17 -O3 -Wno-unused-but-set-variable -Wno-unused-function -Wno-conversion -Wno-misleading-indentation -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DNPY_NO_DEPRECATED_API=NPY_1_9_API_VERSION -MD -MQ scipy/lib_fortranobject.a.p/.._.._.._.._usr_lib_m68k-linux-gnu_python3-numpy_numpy_f2py_src_fortranobject.c.o -MF scipy/lib_fortranobject.a.p/.._.._.._.._usr_lib_m68k-linux-gnu_python3-numpy_numpy_f2py_src_fortranobject.c.o.d -o scipy/lib_fortranobject.a.p/.._.._.._.._usr_lib_m68k-linux-gnu_python3-numpy_numpy_f2py_src_fortranobject.c.o -c ../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/f2py/src/fortranobject.c ... [886/1448] c++ -Iscipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p -Iscipy/sparse/sparsetools -I../scipy/sparse/sparsetools -I../scipy/_build_utils/src -I../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/_core/include -I/usr/include/python3.13 -I/usr/include/m68k-linux-gnu/python3.13 -fvisibility=hidden -fvisibility-inlines-hidden -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DNPY_NO_DEPRECATED_API=NPY_1_9_API_VERSION -MD -MQ scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o -MF scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o.d -o scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o -c ../scipy/sparse/sparsetools/bsr.cxx FAILED: scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o c++ -Iscipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p -Iscipy/sparse/sparsetools -I../scipy/sparse/sparsetools -I../scipy/_build_utils/src -I../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/_core/include -I/usr/include/python3.13 -I/usr/include/m68k-linux-gnu/python3.13 -fvisibility=hidden -fvisibility-inlines-hidden -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DNPY_NO_DEPRECATED_API=NPY_1_9_API_VERSION -MD -MQ scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o -MF scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o.d -o scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o -c ../scipy/sparse/sparsetools/bsr.cxx In file included from ../scipy/sparse/sparsetools/bsr.cxx:5: ../scipy/sparse/sparsetools/bsr.h: In function ‘void bsr_binop_bsr(I, I, I, I, const I*, const I*, const T*, const I*, const I*, const T*, I*, I*, T2*, const bin_op&) [with I = long long int; T = complex_wrapper<float, npy_cfloat>; T2 = complex_wrapper<float, npy_cfloat>; bin_op = std::multiplies<complex_wrapper<float, npy_cfloat> >]’: ../scipy/sparse/sparsetools/bsr.h:591:1: error: unable to find a register to spill in class ‘ADDR_REGS’ 591 | } | ^ ../scipy/sparse/sparsetools/bsr.h:591:1: error: this is the insn: (insn 848 847 3788 54 (set (mem:DI (plus:SI (mult:SI (subreg:SI (reg/v:DI 744 [orig:137 nnz ] [137]) 4) (const_int 8 [0x8])) (reg/v/f:SI 392 [ Cj ])) [2 *_176+0 S8 A16]) (mem:DI (post_inc:SI (reg:SI 6 %d6 [orig:63 ivtmp.100551 ] [63])) [2 MEM[(const long long int *)_814]+0 S8 A16])) "../scipy/sparse/sparsetools/bsr.h":512:25 75 {*m68k.md:1569} (expr_list:REG_INC (reg:SI 6 %d6 [orig:63 ivtmp.100551 ] [63]) (nil))) ../scipy/sparse/sparsetools/bsr.h:591: confused by earlier errors, bailing out Preprocessed source stored into /tmp/ccduDjZh.out file, please attach this to your bugreport. === BEGIN GCC DUMP === 4017446: // Target: m68k-linux-gnu 4017446: // Configured with: ../src/configure -v --with-pkgversion='Debian 15.2.0-4' --with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs --enable-languages=c,ada,c++,fortran,objc,obj-c++,m2,algol68 --prefix=/usr --with-gcc-major-version-only --program-suffix=-15 --program-prefix=m68k-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-libssp --disable-libitm --disable-libsanitizer --disable-libquadmath --disable-libquadmath-support --enable-plugin --with-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --disable-werror --disable-multilib --enable-checking=release --build=m68k-linux-gnu --host=m68k-linux-gnu --target=m68k-linux-gnu 4017446: // Thread model: posix 4017446: // Supported LTO compression algorithms: zlib zstd 4017446: // gcc version 15.2.0 (Debian 15.2.0-4) 4017446: // 4017446: // In file included from ../scipy/sparse/sparsetools/bsr.cxx:5: 4017446: // ../scipy/sparse/sparsetools/bsr.h: In function ‘void bsr_binop_bsr(I, I, I, I, const I*, const I*, const T*, const I*, const I*, const T*, I*, I*, T2*, const bin_op&) [with I = long long int; T = complex_wrapper<float, npy_cfloat>; T2 = complex_wrapper<float, npy_cfloat>; bin_op = std::multiplies<complex_wrapper<float, npy_cfloat> >]’: 4017446: // ../scipy/sparse/sparsetools/bsr.h:591:1: error: unable to find a register to spill in class ‘ADDR_REGS’ 4017446: // 591 | } 4017446: // | ^ 4017446: // ../scipy/sparse/sparsetools/bsr.h:591:1: error: this is the insn: 4017446: // (insn 848 847 3788 54 (set (mem:DI (plus:SI (mult:SI (subreg:SI (reg/v:DI 744 [orig:137 nnz ] [137]) 4) 4017446: // (const_int 8 [0x8])) 4017446: // (reg/v/f:SI 392 [ Cj ])) [2 *_176+0 S8 A16]) 4017446: // (mem:DI (post_inc:SI (reg:SI 6 %d6 [orig:63 ivtmp.100551 ] [63])) [2 MEM[(const long long int *)_814]+0 S8 A16])) "../scipy/sparse/sparsetools/bsr.h":512:25 75 {*m68k.md:1569} 4017446: // (expr_list:REG_INC (reg:SI 6 %d6 [orig:63 ivtmp.100551 ] [63]) 4017446: // (nil))) 4017446: // ../scipy/sparse/sparsetools/bsr.h:591: confused by earlier errors, bailing out 4017446: 4017446: // /usr/libexec/gcc/m68k-linux-gnu/15/cc1plus -quiet -I scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p -I scipy/sparse/sparsetools -I ../scipy/sparse/sparsetools -I ../scipy/_build_utils/src -I ../../../../usr/lib/m68k-linux-gnu/python3-numpy/numpy/_core/include -I /usr/include/python3.13 -I /usr/include/m68k-linux-gnu/python3.13 -imultilib . -imultiarch m68k-linux-gnu -MD scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.d -MF scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o.d -MQ scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/bsr.cxx.o -D_GNU_SOURCE -D NDEBUG -D _LARGEFILE_SOURCE -D _FILE_OFFSET_BITS=64 -D _TIME_BITS=64 -D _FORTIFY_SOURCE=2 -D NPY_NO_DEPRECATED_API=NPY_1_9_API_VERSION ../scipy/sparse/sparsetools/bsr.cxx -quiet -dumpdir scipy/sparse/sparsetools/_sparsetools.cpython-313-m68k-linux-gnu.so.p/ -dumpbase bsr.cxx.cxx -dumpbase-ext .cxx -mcpu=68020 -g -O3 -O2 -Wall -Winvalid-pch -Wformat=1 -Werror=format-security -Wdate-time -std=c++17 -fdiagnostics-color=always -fvisibility=hidden -fvisibility-inlines-hidden -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fPIC -o - -frandom-seed=0 -fdump-noaddr
