https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114312
Bug ID: 114312 Summary: ICE: SIGSEGV: infinite recursion in chrec_fold_plus_1 (tree-chrec.cc:336) at -O3 with _BitInt() Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz CC: jakub at gcc dot gnu.org Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 57673 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57673&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O3 testcase.c -wrapper gdb,--args GNU gdb (Gentoo 14.1 vanilla) 14.1 ... (gdb) r Starting program: /repo/gcc-trunk/binary-trunk-r14-9425-20240311112226-g119f5ae0455-checking-yes-rtl-df-extra-nobootstrap-amd64/libexec/gcc/x86_64-pc-linux-gnu/14.0.1/cc1 -quiet -iprefix /repo/gcc-trunk/binary-trunk-r14-9425-20240311112226-g119f5ae0455-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../lib/gcc/x86_64-pc-linux-gnu/14.0.1/ testcase.c -quiet -dumpdir a- -dumpbase testcase.c -dumpbase-ext .c -mtune=generic -march=x86-64 -O3 -o /tmp/ccMD8BgN.s [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. ggc_internal_alloc (size=size@entry=32, f=f@entry=0x0, s=s@entry=0, n=n@entry=1) at /repo/gcc-trunk/gcc/ggc-page.cc:1401 1401 memset (result, 0xaf, object_size); (gdb) bt #0 ggc_internal_alloc (size=size@entry=32, f=f@entry=0x0, s=s@entry=0, n=n@entry=1) at /repo/gcc-trunk/gcc/ggc-page.cc:1401 #1 0x0000000001820695 in ggc_internal_alloc (s=32) at /repo/gcc-trunk/gcc/ggc.h:136 #2 ggc_alloc_tree_node_stat (s=32) at /repo/gcc-trunk/gcc/ggc.h:319 #3 build1 (code=code@entry=NOP_EXPR, type=type@entry=0x7ffff75b1888, node=node@entry=0x7ffff75ea870) at /repo/gcc-trunk/gcc/tree.cc:5010 #4 0x000000000110e71d in build1_loc (arg1=0x7ffff75ea870, type=0x7ffff75b1888, code=NOP_EXPR, loc=0) at /repo/gcc-trunk/gcc/tree.h:4740 #5 fold_build1_loc (loc=0, code=NOP_EXPR, type=0x7ffff75b1888, op0=0x7ffff75ea870) at /repo/gcc-trunk/gcc/fold-const.cc:14144 #6 0x00000000027db3a1 in chrec_convert_1 (type=0x7ffff75b1888, chrec=0x7ffff75ea870, at_stmt=0x0, use_overflow_semantics=<optimized out>, from=0x0) at /repo/gcc-trunk/gcc/tree-chrec.cc:1601 #7 0x00000000027dd2b4 in chrec_convert (from=0x0, use_overflow_semantics=true, at_stmt=0x0, chrec=0x7ffff75ea870, type=0x7ffff75b1888) at /repo/gcc-trunk/gcc/tree-chrec.cc:1655 #8 chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff75ea870, type=0x7ffff7422000, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #9 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff7422000, op0=0x7ffff75ea870, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 #10 0x00000000027dcfd5 in chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff5f4e900, type=0x7ffff75b1888, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #11 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff75b1888, op0=0x7ffff5f4e900, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 #12 0x00000000027dcfd5 in chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff75ea870, type=0x7ffff7422000, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #13 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff7422000, op0=0x7ffff75ea870, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 #14 0x00000000027dcfd5 in chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff5f4e8c0, type=0x7ffff75b1888, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #15 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff75b1888, op0=0x7ffff5f4e8c0, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 #16 0x00000000027dcfd5 in chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff75ea870, type=0x7ffff7422000, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #17 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff7422000, op0=0x7ffff75ea870, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 #18 0x00000000027dcfd5 in chrec_fold_plus_1 (op1=<optimized out>, op0=0x7ffff5f4e880, type=0x7ffff75b1888, code=MINUS_EXPR) at /repo/gcc-trunk/gcc/tree-chrec.cc:336 #19 chrec_fold_plus_1 (code=MINUS_EXPR, type=0x7ffff75b1888, op0=0x7ffff5f4e880, op1=<optimized out>) at /repo/gcc-trunk/gcc/tree-chrec.cc:233 ... $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-9425-20240311112226-g119f5ae0455-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --disable-bootstrap --with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r14-9425-20240311112226-g119f5ae0455-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240311 (experimental) (GCC)