Found when running testsuite on x86_64 -m32 with -fpic: $ ~/gcc-build/gcc/cc1 -quiet -fsanitize=address -m32 -fpic bitfield-1.c bitfield-1.c: In function ‘main’: bitfield-1.c:23:1: internal compiler error: in df_refs_verify, at df-scan.c:4088 } ^ 0x6e9a6b df_refs_verify ../../gcc-svn/trunk/gcc/df-scan.c:4088 0x6ed861 df_insn_refs_verify ../../gcc-svn/trunk/gcc/df-scan.c:4161 0x6ede02 df_bb_verify ../../gcc-svn/trunk/gcc/df-scan.c:4188 0x6f1457 df_scan_verify() ../../gcc-svn/trunk/gcc/df-scan.c:4320 0x6df084 df_verify() ../../gcc-svn/trunk/gcc/df-core.c:1860 0x6df084 df_analyze_1 ../../gcc-svn/trunk/gcc/df-core.c:1248 0x8ddbdb ira ../../gcc-svn/trunk/gcc/ira.c:5158 0x8ddbdb execute ../../gcc-svn/trunk/gcc/ira.c:5507 Please submit a full bug report, The failure with -O2 is a bit different: $ ~/gcc-build/gcc/cc1 -quiet -fsanitize=address -m32 -fpic -O2 bitfield-1.c bitfield-1.c: In function ‘main’: bitfield-1.c:23:1: internal compiler error: Segmentation fault } ^ 0xa4ea8f crash_signal ../../gcc-svn/trunk/gcc/toplev.c:358 0x6ea7ff df_install_ref ../../gcc-svn/trunk/gcc/df-scan.c:2331 0x6edfa5 df_install_refs ../../gcc-svn/trunk/gcc/df-scan.c:2413 0x6ee57b df_refs_add_to_chains ../../gcc-svn/trunk/gcc/df-scan.c:2466 0x6f07dc df_bb_refs_record(int, bool) ../../gcc-svn/trunk/gcc/df-scan.c:3399 0x6f098c df_scan_blocks() ../../gcc-svn/trunk/gcc/df-scan.c:629 0x6ddb52 rest_of_handle_df_initialize ../../gcc-svn/trunk/gcc/df-core.c:746 Please submit a full bug report,
Confirmed.
-Os -g fails: ~/gcc-build/gcc/cc1 -quiet -fsanitize=address -m32 -fpic -Os -g bitfield-1.c bitfield-1.c: In function ‘main’: bitfield-1.c:23:1: internal compiler error: in operator[], at vec.h:736 } ^ 0x1046c07 vec<df_ref_d*, va_heap, vl_embed>::operator[](unsigned int) ../../gcc-svn/trunk/gcc/vec.h:736 0x1046c07 vec<df_ref_d*, va_heap, vl_ptr>::operator[](unsigned int) ../../gcc-svn/trunk/gcc/vec.h:1202 0x1046c07 process_uses ../../gcc-svn/trunk/gcc/fwprop.c:212 0x10472ad single_def_use_dom_walker::before_dom_children(basic_block_def*) ../../gcc-svn/trunk/gcc/fwprop.c:253 0x103e3d7 dom_walker::walk(basic_block_def*) ../../gcc-svn/trunk/gcc/domwalk.c:188 0x1046884 build_single_def_use_links ../../gcc-svn/trunk/gcc/fwprop.c:310 0x1046884 fwprop_init ../../gcc-svn/trunk/gcc/fwprop.c:1415 0x104875a fwprop ../../gcc-svn/trunk/gcc/fwprop.c:1460 0x104875a execute ../../gcc-svn/trunk/gcc/fwprop.c:1509 Please submit a full bug report,
I already posted a patch - http://gcc.gnu.org/ml/gcc-patches/2014-10/msg03318.html Will ping it today
Author: ienkovich Date: Thu Nov 20 08:15:21 2014 New Revision: 217825 URL: https://gcc.gnu.org/viewcvs?rev=217825&root=gcc&view=rev Log: gcc/ PR sanitizer/63845 * function.c (assign_parms): Move init of pic_offset_table_rtx from here to... * cfgexpand.c (expand_used_vars): ...here. gcc/testsuite/ PR sanitizer/63845 * gcc.dg/asan/pr63845.c: New test. Added: trunk/gcc/testsuite/gcc.dg/asan/pr63845.c Modified: trunk/gcc/ChangeLog trunk/gcc/cfgexpand.c trunk/gcc/function.c trunk/gcc/testsuite/ChangeLog
Assuming fixed.
*** Bug 63846 has been marked as a duplicate of this bug. ***