http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47615
Summary: [4.6 Regression] ICE: too deep recursion in phi_translate/phi_translate_1 with -ftree-pre -fno-tree-fre -fno-tree-sra Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 23250 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23250 auto-reduced testcase Compiler output: $ gcc -O -fstrict-aliasing -ftree-pre -fno-tree-fre -fno-tree-sra testcase.C gcc: internal compiler error: Segmentation fault (program cc1plus) Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. (gdb) bt #0 0x00007ffff643711c in _int_malloc () from /lib/libc.so.6 #1 0x00007ffff64399d0 in malloc () from /lib/libc.so.6 #2 0x00000000011f9c40 in xrealloc (oldmem=<value optimized out>, size=152) at /mnt/svn/gcc-trunk/libiberty/xmalloc.c:177 #3 0x0000000000bea372 in vec_heap_o_reserve_1 (vec=0x0, reserve=<value optimized out>, vec_offset=<value optimized out>, elt_size=<value optimized out>, exact=<value optimized out>) at /mnt/svn/gcc-trunk/gcc/vec.c:321 #4 0x0000000000b1b800 in VEC_vn_reference_op_s_heap_copy (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-sccvn.h:86 #5 phi_translate_1 (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1623 #6 0x0000000000b1bc8c in phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #7 phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #8 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #9 0x0000000000b1bc8c in phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #10 phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #11 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #12 0x0000000000b1bc8c in phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #13 phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #14 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #15 0x0000000000b1bc8c in phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #16 phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #17 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #18 0x0000000000b1bc8c in phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #19 phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #20 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #21 0x0000000000b1bc8c in phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1858 #22 phi_translate (expr=0x197c030, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1835 #23 0x0000000000b1b8e9 in phi_translate_1 (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:1570 #24 0x0000000000b1bc8c in phi_translate (expr=0x197b120, set1=0x197e0c8, set2=0x0, pred=0x7ffff5a484e0, phiblock=0x7ffff5a48548) Tested revisions: r169824 - crash 4.5.2 - OK