------- Comment #4 from zsojka at seznam dot cz 2010-09-02 17:32 ------- Created an attachment (id=21674) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21674&action=view) another testcase
This needs -O as well: $ gcc -O pr45478-4.c Related valgrind output: $ valgrind cc1 -O -quiet pr45478-4.c ... ==17845== Invalid write of size 1 ==17845== at 0x877B2AA: mark_reg_pointer (emit-rtl.c:1121) ==17845== by 0x89B97B6: assign_parm_setup_reg (function.c:3137) ==17845== by 0x89BA9F7: assign_parms (function.c:3368) ==17845== by 0x89BF1C6: expand_function_start (function.c:4666) ==17845== by 0x84C594E: gimple_expand_cfg (cfgexpand.c:3825) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== by 0xA336B09: cgraph_optimize (cgraphunit.c:1804) ==17845== by 0xA334877: cgraph_finalize_compilation_unit (cgraphunit.c:1012) ==17845== Address 0x4b6c45c is 3 bytes after a block of size 1 alloc'd ==17845== at 0x40287FE: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==17845== by 0xB6A0D6A: xrealloc (xmalloc.c:177) ==17845== by 0x8778B49: gen_reg_rtx (emit-rtl.c:901) ==17845== by 0x84B764D: expand_one_register_var (cfgexpand.c:846) ==17845== by 0x84B80B6: expand_one_var (cfgexpand.c:993) ==17845== by 0x84B910C: expand_used_vars (cfgexpand.c:1330) ==17845== by 0x84C58CF: gimple_expand_cfg (cfgexpand.c:3807) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== ==17845== Invalid read of size 4 ==17845== at 0xAF5EFFF: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5F593: count_reg_usage (cse.c:6608) ==17845== by 0xAF5F804: count_reg_usage (cse.c:6625) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== Address 0x4b6fb78 is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid write of size 4 ==17845== at 0xAF5F004: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5F593: count_reg_usage (cse.c:6608) ==17845== by 0xAF5F804: count_reg_usage (cse.c:6625) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== Address 0x4b6fb78 is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid read of size 4 ==17845== at 0xAF5EFFF: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5FBC4: count_reg_usage (cse.c:6645) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== by 0xA336B09: cgraph_optimize (cgraphunit.c:1804) ==17845== Address 0x4b6fb78 is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid write of size 4 ==17845== at 0xAF5F004: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5FBC4: count_reg_usage (cse.c:6645) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== by 0xA336B09: cgraph_optimize (cgraphunit.c:1804) ==17845== Address 0x4b6fb78 is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid read of size 4 ==17845== at 0xAF5EFFF: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5F593: count_reg_usage (cse.c:6608) ==17845== by 0xAF5F804: count_reg_usage (cse.c:6625) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== Address 0x4b6fb7c is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid write of size 4 ==17845== at 0xAF5F004: count_reg_usage (cse.c:6583) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF6029A: count_reg_usage (cse.c:6681) ==17845== by 0xAF5F593: count_reg_usage (cse.c:6608) ==17845== by 0xAF5F804: count_reg_usage (cse.c:6625) ==17845== by 0xAF61651: delete_trivially_dead_insns (cse.c:6800) ==17845== by 0xAE3E705: rest_of_handle_jump2 (cfgcleanup.c:2425) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== Address 0x4b6fb7c is not stack'd, malloc'd or (recently) free'd ==17845== ==17845== Invalid read of size 2 ==17845== at 0x868FFFD: df_ref_record (df-scan.c:2881) ==17845== by 0x8696BE4: df_entry_block_defs_collect (df-scan.c:3941) ==17845== by 0x8696C8A: df_record_entry_block_defs (df-scan.c:3959) ==17845== by 0x8688633: df_scan_blocks (df-scan.c:676) ==17845== by 0x8649B4F: rest_of_handle_df_initialize (df-core.c:738) ==17845== by 0x8EEB8F3: execute_one_pass (passes.c:1568) ==17845== by 0x8EEBAC7: execute_pass_list (passes.c:1623) ==17845== by 0x8EEBAE3: execute_pass_list (passes.c:1624) ==17845== by 0x97772D8: tree_rest_of_compilation (tree-optimize.c:452) ==17845== by 0xA3362AC: cgraph_expand_function (cgraphunit.c:1469) ==17845== by 0xA336517: cgraph_expand_all_functions (cgraphunit.c:1548) ==17845== by 0xA336B09: cgraph_optimize (cgraphunit.c:1804) ==17845== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==17845== pr45478-4.c: In function 'search_line_sse42': pr45478-4.c:14:1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. With other similiar testcases, I received various ICEs: 000.i:817:15: internal compiler error: in memory_address_addr_space, at explow.c:505 1380.i:700:1: internal compiler error: RTL check: expected code 'const_int', have '' in const_int_htab_eq, at emit-rtl.c:187 *** glibc detected *** /tmp/portage/sys-devel/gcc-4.6.0_pre9999/work/build/prev-gcc/cc1: malloc(): smallbin double linked list corrupted: 0x0a2e1da0 *** They are probably caused by working with uninitialized and invalid memory. All these testcases are from libcpp/lex.c, I got them while reducing testcase for PR45478. It's probably not needed to upload all of them. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45478
