https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104786
Bug ID: 104786 Summary: [12.0]internal compiler error with extern asm Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: 570070308 at qq dot com Target Milestone: --- Created attachment 52565 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52565&action=edit /tmp/ccusgsXN.out log: ``` ig@ig-virtual-machine:~/temp$ gcc-12 test5.c -S -o 2.s -freport-bug -fno-builtin -v Using built-in specs. COLLECT_GCC=gcc-12 OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 12-20220222-1ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --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-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-12-TT8eTw/gcc-12-12-20220222/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-12-TT8eTw/gcc-12-12-20220222/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.1 20220222 (experimental) [master r12-7325-g2f59f067610] (Ubuntu 12-20220222-1ubuntu1) COLLECT_GCC_OPTIONS='-S' '-o' '2.s' '-freport-bug' '-fno-builtin' '-v' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/12/cc1 -quiet -v -imultiarch x86_64-linux-gnu test5.c -quiet -dumpbase 2.c -dumpbase-ext .c -mtune=generic -march=x86-64 -version -freport-bug -fno-builtin -o 2.s -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection GNU C17 (Ubuntu 12-20220222-1ubuntu1) version 12.0.1 20220222 (experimental) [master r12-7325-g2f59f067610] (x86_64-linux-gnu) compiled by GNU C version 12.0.1 20220222 (experimental) [master r12-7325-g2f59f067610], GMP version 6.2.1, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.24-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/12/include-fixed" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-linux-gnu/12/include /usr/local/include /usr/include/x86_64-linux-gnu /usr/include End of search list. GNU C17 (Ubuntu 12-20220222-1ubuntu1) version 12.0.1 20220222 (experimental) [master r12-7325-g2f59f067610] (x86_64-linux-gnu) compiled by GNU C version 12.0.1 20220222 (experimental) [master r12-7325-g2f59f067610], GMP version 6.2.1, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.24-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: b0de683ccdd6a31c725d9273cea9e1f8 test5.c: In function ‘memcpy’: test5.c:23:10: warning: passing argument 1 of ‘test’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] 23 | test(si); | ^~ test5.c:3:18: note: expected ‘void *’ but argument is of type ‘const void *’ 3 | void test(void * a); | ~~~~~~~^ during RTL pass: expand test5.c:11:9: internal compiler error: in assign_stack_temp_for_type, at function.cc:798 11 | __asm__ inline ( | ^~~~~~~ 0x63d27e assign_stack_temp_for_type(machine_mode, poly_int<1u, long>, tree_node*) ../../src/gcc/function.cc:798 0x90cb33 assign_temp(tree_node*, int, int) ../../src/gcc/function.cc:1018 0x7aa202 expand_asm_stmt ../../src/gcc/cfgexpand.cc:3332 0x7adccc expand_gimple_stmt_1 ../../src/gcc/cfgexpand.cc:3861 0x7adccc expand_gimple_stmt ../../src/gcc/cfgexpand.cc:4028 0x7b2a77 expand_gimple_basic_block ../../src/gcc/cfgexpand.cc:6069 0x7b4716 execute ../../src/gcc/cfgexpand.cc:6795 Please submit a full bug report, with preprocessed source. Please include the complete backtrace with any bug report. See <file:///usr/share/doc/gcc-12/README.Bugs> for instructions. Preprocessed source stored into /tmp/ccusgsXN.out file, please attach this to your bugreport. ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/_usr_lib_gcc_x86_64-linux-gnu_12_cc1.1000.crash' ig@ig-virtual-machine:~/temp$ ``` test5.c: ``` #include <stddef.h> void test(void * a); void memcpy(void * di, const void * si, size_t num) { { const void * temp_si=si; void *temp_di=di; size_t temp_num=num; __asm__ inline ( "cld\n\t" "shrq $4, %%rcx\n\t" "%[rsi] %[rdi]\n\t" "rep; movsq\n\t" "movq %[rcx2], %%rcx\n\t" "rep; movsb" :[rcx]"+c"(temp_num), [rdi]"+D"(temp_di), [rsi]"+S"(temp_si), "=X"( *(char (*)[num])di ) :[rcx2]"g"( num&7 ), "X"( (const char (*)[num])si ) :"cc" ); } test(si); } ``` /tmp/ccusgsXN.out: see attachment the gcc-12 is installed by apt on ubuntu 22.04