This patch fixes a loophole in the -fstack-protector-strong protection.
If a function call uses a return slot, the caller needs stack protector
instrumentation because the return slot is addressable.
gcc/
2014-05-09 Florian Weimer <fweimer@redhat.com>
* cfgexpand.c (stack_protect_decl_p): New function, extracted from
expand_used_vars.
(stack_protect_return_slot_p): New function.
(expand_used_vars): Call stack_protect_decl_p and
stack_protect_return_slot_p for -fstack-protector-strong.
gcc/testsuite/
2014-05-09 Florian Weimer <fweimer@redhat.com>
* gcc.dg/fstack-protector-strong.c: Add coverage for return slots.
* g++.dg/fstack-protector-strong.C: Likewise.
* gcc.target/i386/ssp-strong-reg.c: New file.
From-SVN: r210275
gcc/config/avr
PR target/61055
* config/avr/avr.md (cc): Add new attribute set_vzn.
(addqi3, addqq3, adduqq3, subqi3, subqq3, subuqq3, negqi2) [cc]:
Set cc insn attribute to set_vzn instead of set_zn for alternatives
with INC, DEC or NEG.
* config/avr/avr.c (avr_notice_update_cc): Handle SET_VZN.
(avr_out_plus_1): ADIW sets cc0 to CC_SET_CZN.
INC, DEC and ADD+ADC set cc0 to CC_CLOBBER.
gcc/testsuite/
PR target/61055
* gcc.target/avr/torture/pr61055.c: New test.
From-SVN: r210267
2014-05-09 Joey Ye <joey.ye@arm.com>
* files.c (find_file_in_dir): Always try to shorten for DOS
non-system headers.
* init.c (ENABLE_CANONICAL_SYSTEM_HEADERS): Default enabled for DOS.
From-SVN: r210264
PR c/50459
c-family/
* c-common.c (check_user_alignment): Return -1 if alignment is error
node.
(handle_aligned_attribute): Don't call default_conversion on
FUNCTION_DECLs.
(handle_vector_size_attribute): Likewise.
(handle_tm_wrap_attribute): Handle case when wrap_decl is error node.
(handle_sentinel_attribute): Call default_conversion and allow even
integral types as an argument.
c/
* c-parser.c (c_parser_attributes): Parse the arguments as an
expression-list if the attribute takes identifier.
testsuite/
* c-c++-common/attributes-1.c: Move test line to a new test.
* c-c++-common/attributes-2.c: New test.
* c-c++-common/pr50459.c: New test.
* c-c++-common/pr59280.c: Add "undeclared" to dg-error.
* gcc.dg/nonnull-2.c: Likewise.
* gcc.dg/pr55570.c: Modify dg-error.
* gcc.dg/tm/wrap-2.c: Likewise.
From-SVN: r210262
2014-05-09 Richard Biener <rguenther@suse.de>
* Makefile.in (GTFILES): Remove tree-ssa-propagate.c.
* tree-ssa-propagate.c: Do not include gt-tree-ssa-propagate.h.
(interesting_ssa_edges, varying_ssa_edges): Move out of GC space.
(add_ssa_edge, process_ssa_edge_worklist, ssa_prop_init,
ssa_propagate): Adjust.
From-SVN: r210261
* mmap.c (backtrace_free): If freeing a large aligned block of
memory, call munmap rather than holding onto it.
(backtrace_vector_grow): When growing a vector, double the number
of pages requested. When releasing the old version of a grown
vector, pass the correct size to backtrace_free.
From-SVN: r210256
2014-05-08 Jeff Law <law@redhat.com>
PR tree-optimization/61009
* tree-ssa-threadedge.c (thread_through_normal_block): Return a
tri-state rather than a boolean. When a block is too big to
thread through, inform caller via negative return value.
(thread_across_edge): If a block was too big for normal threading,
then it's too big for a joiner too, so remove temporary equivalences
and return immediately.
PR tree-optimization/61009
* g++.dg/tree-ssa/pr61009.C: New test.
From-SVN: r210254
PR c/61077
c-family/
* c-common.c (check_main_parameter_types): Warn for _Atomic-qualified
parameter type of main.
c/
* c-decl.c (start_function): Warn for _Atomic-qualified return type
of main.
testsuite/
* gcc.dg/pr61077.c: New test.
From-SVN: r210229
2014-05-08 Tobias Burnus <burnus@net-b.de>
* gfortran.h (gfc_isym_id): Add GFC_ISYM_CAF_GET
and GFC_ISYM_CAF_SEND.
* intrinsic.c (add_functions): Add only internally
accessible caf_get and caf_send functions.
* resolve.c (add_caf_get_intrinsic,
remove_caf_get_intrinsic): New functions.
(resolve_variable): Resolve expression rank and
prepare for add_caf_get_intrinsic call.
(gfc_resolve_expr): For variables, remove rank
resolution.
(resolve_ordinary_assign): Prepare call to
GFC_ISYM_CAF_SEND.
(resolve_code): Avoid call to GFC_ISYM_CAF_GET for
the LHS of an assignment.
From-SVN: r210225
/cp
2014-05-08 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/13981
* typeck.c (convert_for_assignment): Provide an inform for pointers
to incomplete class types.
/testsuite
2014-05-08 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/13981
* g++.dg/diagnostic/pr13981.C: New.
From-SVN: r210217
2014-05-08 Richard Biener <rguenther@suse.de>
* tree-ssa-sccvn.c (vn_get_expr_for): Valueize operands before
folding the expression.
(valueize_expr): Remove.
(visit_reference_op_load): Do not valueize the result of
vn_get_expr_for.
(simplify_binary_expression): Likewise.
(simplify_unary_expression): Likewise.
From-SVN: r210211
libiberty/
2014-05-08 Gary Benson <gbenson@redhat.com>
* cp-demangle.c (struct d_component_stack): New structure.
(struct d_print_info): New field component_stack.
(d_print_init): Initialize the above.
(d_print_comp_inner): Renamed from d_print_comp.
Do not restore template stack if it would cause a loop.
(d_print_comp): New function.
* testsuite/demangle-expected: New test cases.
From-SVN: r210205
* c-cppbuiltin.c (print_bits_of_hex): New.
(builtin_define_type_minmax): Print values using hex so as not to
require a pre-computed list of string values.
From-SVN: r210202
PR target/60737
* config/rs6000/rs6000.c (expand_block_move): Allow 64-bit
loads and stores when -mno-strict-align at any alignment.
(expand_block_clear): Similarly. Also correct calculation of
instruction count.
From-SVN: r210201
2014-05-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
PR middle-end/39246
* tree-complex.c (expand_complex_move): Keep line info when expanding
complex move.
* tree-ssa-uninit.c (warn_uninit): New argument. Ignore assignment
of complex expression. Use new argument to display correct location
for values coming from phi statement.
(warn_uninitialized_vars): Adapt to new signature of warn_uninit.
(warn_uninitialized_phi): Pass location of phi argument to
warn_uninit.
* tree-ssa.c (ssa_undefined_value_p): For SSA_NAME initialized by a
COMPLEX_EXPR, recurse on each part of the COMPLEX_EXPR.
testsuite:
* gcc.dg/uninit-13.c: Move warning on the actual source line where
the uninitialized complex is used.
* gcc.dg/uninit-17.c: New test to check partial initialization of
complex with branches.
* gcc.dg/uninit-17-O0.c: Likewise.
From-SVN: r210200
2014-05-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
PR middle-end/39246
* tree-complex.c (expand_complex_move): Keep line info when expanding
complex move.
* tree-ssa-uninit.c (warn_uninit): New argument. Ignore assignment
of complex expression. Use new argument to display correct location
for values coming from phi statement.
(warn_uninitialized_vars): Adapt to new signature of warn_uninit.
(warn_uninitialized_phi): Pass location of phi argument to
warn_uninit.
* tree-ssa.c (ssa_undefined_value_p): For SSA_NAME initialized by a
COMPLEX_EXPR, recurse on each part of the COMPLEX_EXPR.
testsuite:
* gcc.dg/uninit-13.c: Move warning on the actual source line where
the uninitialized complex is used.
* gcc.dg/uninit-17.c: New test to check partial initialization of
complex with branches.
* gcc.dg/uninit-17-O0.c: Likewise.
From-SVN: r210199
2014-05-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
PR middle-end/39246
* tree-complex.c (expand_complex_move): Keep line info when expanding
complex move.
* tree-ssa-uninit.c (warn_uninit): New argument. Ignore assignment
of complex expression. Use new argument to display correct location
for values coming from phi statement.
(warn_uninitialized_vars): Adapt to new signature of warn_uninit.
(warn_uninitialized_phi): Pass location of phi argument to
warn_uninit.
* tree-ssa.c (ssa_undefined_value_p): For SSA_NAME initialized by a
COMPLEX_EXPR, recurse on each part of the COMPLEX_EXPR.
testsuite:
* gcc.dg/uninit-13.c: Move warning on the actual source line where
the uninitialized complex is used.
* gcc.dg/uninit-17.c: New test to check partial initialization of
complex with branches.
* gcc.dg/uninit-17-O0.c: Likewise.
From-SVN: r210198
