https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111937
--- Comment #3 from Xiao Ma <mxlol233 at outlook dot com> --- Created attachment 56185 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56185&action=edit a patch on releases/gcc-13 to reproduce the bug. steps: 1. git clone -b releases/gcc-13 https://github.com/gcc-mirror/gcc.git 2. cd gcc 3. #apply this patch 4. mkdir .build_accel && cd .build_accel && ../configure --target=rvgpu-none --enable-languages=c --enable-as-accelerator-for=x86_64-pc-linux-gnu && make all-gcc -j16 5. cd ../ 6. mkdir .build_host && cd .build_host && ../configure --enable-languages=c --enable-offload-targets=rvgpu-none=`pwd`/../../.install/rvgpu-none/ && make all-gcc -j16 7. cd ../ && mkdir .tmp && cd .tmp 8. # touch a file: ``` /* { dg-do run } */ int main (void) { int i2, l = 0, r = 0, l2 = 0; int a[3][3][3]; #pragma acc parallel #pragma acc loop collapse(4 - 1) for (int i = 0; i < 2; i++) for (int j = 0; j < 2; j++) for (int k = 0; k < 2; k++) a[i][j][k] = i + j * 4 + k * 16; #pragma acc parallel { #pragma acc loop collapse(2) reduction(|:l) for (i2 = 0; i2 < 2; i2++) for (int j = 0; j < 2; j++) for (int k = 0; k < 2; k++) if (a[i2][j][k] != i2 + j * 4 + k * 16) l += 1; } /* Test loop with >= condition. */ #pragma acc parallel { #pragma acc loop collapse(2) reduction(|:l2) for (i2 = 0; i2 < 2; i2++) for (int j = 1; j >= 0; j--) for (int k = 0; k < 2; k++) if (a[i2][j][k] != i2 + j * 4 + k * 16) l2 += 1; } for (i2 = 0; i2 < 2; i2++) for (int j = 0; j < 2; j++) for (int k = 0; k < 2; k++) if (a[i2][j][k] != i2 + j * 4 + k * 16) r += 1; return 0; } ``` 9. ../.build_host/gcc/cc1 -fopenacc -quiet -o a.s a.c # you will see the log like this: ```NUM_POLY_INT_COEFFS=1 ``` 10. as --64 -o a.o a.s 11. ../.build_accel/gcc/lto1 -quiet -o a.o.s a.o # you will see the log like this: ``` NUM_POLY_INT_COEFFS=2 ‘ Segmentation fault 0xbf3e83 crash_signal ../../gcc/toplev.cc:314 0x7f92986f608f ??? /build/glibc-SzIz7B/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0 0x7f929883b6e5 ??? ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 0x1773512 pp_quoted_string ../../gcc/pretty-print.cc:1845 0x177435a pp_format(pretty_printer*, text_info*) ../../gcc/pretty-print.cc:1359 0x176495f diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) ../../gcc/diagnostic.cc:1592 0x1765149 diagnostic_impl ../../gcc/diagnostic.cc:1756 0x1767236 fatal_error(unsigned int, char const*, ...) ../../gcc/diagnostic.cc:2141 0xa90e11 lto_input_mode_table(lto_file_decl_data*) ../../gcc/lto-streamer-in.cc:2103 0x748626 lto_file_finalize ../../gcc/lto/lto-common.cc:2275 0x748626 lto_create_files_from_ids ../../gcc/lto/lto-common.cc:2298 0x748626 lto_file_read ../../gcc/lto/lto-common.cc:2353 0x748626 read_cgraph_and_symbols(unsigned int, char const**) ../../gcc/lto/lto-common.cc:2801 0x735356 lto_main() ../../gcc/lto/lto.cc:654 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ```
