On 06/06/2015 05:49 AM, Andreas Schwab wrote:
Bootstrap fails on aarch64:Comparing stages 2 and 3 warning: gcc/cc1objplus-checksum.o differs warning: gcc/cc1obj-checksum.o differs warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! gcc/ira-costs.o differs gcc/tree-sra.o differs gcc/tree-parloops.o differs gcc/tree-vect-data-refs.o differs gcc/java/jcf-io.o differs gcc/ipa-inline-analysis.o differs and on ia64: ../../gcc/dwarf2out.c: In function 'void gen_block_die(tree, dw_die_ref)': ../../gcc/dwarf2out.c:19868:42: error: 'stmt_die' may be used uninitialized in \ this function [-Werror=maybe-uninitialized] add_high_low_attributes (stmt, stmt_die); ^ ../../gcc/dwarf2out.c:19821:14: note: 'stmt_die' was declared here dw_die_ref stmt_die;
Does the attached fix the ia64 failure?
commit 6c40c8f011bbd09ea92749f3925db83f249baf74 Author: Aldy Hernandez <[email protected]> Date: Sat Jun 6 06:48:40 2015 -0400 * dwarf2out.c (gen_lexical_block_die): Initialize stmt_die. diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index 2e3bee3..23cf120 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -19818,7 +19818,7 @@ static void gen_lexical_block_die (tree stmt, dw_die_ref context_die) { dw_die_ref old_die = BLOCK_DIE (stmt); - dw_die_ref stmt_die; + dw_die_ref stmt_die = NULL; if (!old_die) { stmt_die = new_die (DW_TAG_lexical_block, context_die, stmt); @@ -19859,13 +19859,13 @@ gen_lexical_block_die (tree stmt, dw_die_ref context_die) if (old_die) stmt_die = old_die; - if (!early_dwarf) + /* A non abstract block whose blocks have already been reordered + should have the instruction range for this block. If so, set the + high/low attributes. */ + if (!early_dwarf && !BLOCK_ABSTRACT (stmt) && TREE_ASM_WRITTEN (stmt)) { - /* A non abstract block whose blocks have already been reordered - should have the instruction range for this block. If so, set the - high/low attributes. */ - if (! BLOCK_ABSTRACT (stmt) && TREE_ASM_WRITTEN (stmt)) - add_high_low_attributes (stmt, stmt_die); + gcc_assert (stmt_die); + add_high_low_attributes (stmt, stmt_die); } decls_for_scope (stmt, stmt_die);
