2021-04-20  Jakub Jelinek  <jakub@redhat.com>

	* BASE-VER: Set to 11.0.0.

Depending on whether GCC is configured using --with-mode=zarch or not,
for the 31bit target instructions are generated either for ESA or
z/Architecture.  For the sake of simplicity and robustness test only for
the latter by adding manually option -mzarch.

gcc/testsuite/ChangeLog:

	* gcc.target/s390/zero-scratch-regs-1.c: Force test to run for
	z/Architecture only.

2021-04-20  Paul Thomas  <pault@gcc.gnu.org>

gcc/fortran
	PR fortran/100110
	* trans-decl.c (gfc_get_symbol_decl): Replace test for host
	association with a check that the current and symbol namespaces
	are the same.

gcc/testsuite/
	PR fortran/100110
	* gfortran.dg/pdt_31.f03: New test.
	* gfortran.dg/pdt_26.f03: Reduce 'builtin_malloc' count from 9
	to 8.

Instead of unsafe pointer dereferencing, use memcpy() to read encoded
values from memory.  The function `read_encoded_value' has been updated
to accept a ref parameter, this simplifies handling of the pointer to
memory needing to be read.

libphobos/ChangeLog:

	PR d/98584
	* libdruntime/gcc/deh.d (scanLSDA): Update calls to read_uleb128 and
	read_encoded_value.
	(actionTableLookup): Update calls to read_sleb128 and
	read_encoded_value_with_base.
	* libdruntime/gcc/unwind/pe.d (read_uleb128): Update signature.
	(read_sleb128): Update signature.
	(read_unaligned): New function.
	(read_encoded_value_with_base): Update signature.  Call read_unaligned
	instead of unsafe pointer dereferencing.
	(read_encoded_value): Update signature.

This is an ICE-on-invalid, but I keep seeing it when reducing code so
I'd like to fix it.  We crash on

  template <typename> void forward() {
    concept C = true;
  }

which breaks two requirements:
[temp.concept]/1: A concept is a template ...
[temp.concept]/3: A concept-definition shall inhabit a namespace scope.

This patch adds a test that exercises broken code and fixes the ICE
by checking that a concept-definition is defined at namespace scope.

gcc/cp/ChangeLog:

	PR c++/97536
	* decl.c (grokvardecl): Given an error when a concept is not defined
	at namespace scope.

gcc/testsuite/ChangeLog:

	PR c++/97536
	* g++.dg/concepts/diagnostic16.C: New test.

Limit how many logical expressions GORI will look back through when
evaluating outgoing edge range.

	PR tree-optimization/100081
	* gimple-range-cache.h (ranger_cache): Inherit from gori_compute
	rather than gori_compute_cache.
	* gimple-range-gori.cc (is_gimple_logical_p): Move to top of file.
	(range_def_chain::m_logical_depth): New member.
	(range_def_chain::range_def_chain): Initialize m_logical_depth.
	(range_def_chain::get_def_chain): Don't build defchains through more
	than LOGICAL_LIMIT logical expressions.
	* params.opt (param_ranger_logical_depth): New.

The percentage character was being confused for a format specifier in
pp_format(), whilst the backtick character was confused for the
beginning of a quoted string in expand_d_format().

Both are now properly escaped to avoid the ICE.

gcc/d/ChangeLog:

	PR d/98457
	* d-diagnostic.cc (expand_d_format): Handle escaped backticks.
	(escape_d_format): New funtion.
	(verror): Call escape_d_format on prefixing strings.
	(vdeprecation): Likewise.

gcc/testsuite/ChangeLog:

	PR d/98457
	* gdc.dg/pr98457.d: New test.

Phobos changes:

 - Synchronize C bindings with the latest port fixes in upstream
   druntime.

 - Add Config.stderrPassThrough to std.process (PR98494).

Reviewed-on: https://github.com/dlang/druntime/pull/3448
	     https://github.com/dlang/phobos/pull/7984

libphobos/ChangeLog:

	PR d/98494
	* libdruntime/MERGE: Merge upstream druntime 89f870b7.
	* src/MERGE: Merge upstream phobos e6907ff3e.

libphobos/ChangeLog:

	PR d/98058
	* configure: Regenerate.
	* libdruntime/Makefile.am (DRUNTIME_DSOURCES_DARWIN): Add
	core/sys/darwin/config.d
	* libdruntime/Makefile.in: Regenerate.
	* libdruntime/config/powerpc/switchcontext.S: Implement
	fiber_switchContext for __MACH__.
	* libdruntime/config/x86/switchcontext.S: Likewise.
	* libdruntime/core/sys/darwin/config.d: New file.
	* libdruntime/core/thread/fiber.d (Fiber.getThis): Mark noinline.
	(UnsafeFiberMigration): Define for OSX/X86 and OSX/X86_64.
	* libdruntime/core/thread/osthread.d (callWithStackShell): Add inline
	assembler implementation for X86, X86_64, PPC, and PPC64.
	* libdruntime/core/thread/threadbase.d (ThreadBase.getThis): Mark
	noinline.
	* libdruntime/gcc/deh.d (FuncTable): Remove definition.
	* m4/druntime/os.m4 (DRUNTIME_OS_MINFO_BRACKETING): Check for right
	bracket symbol on darwin* targets.
	* testsuite/libphobos.thread/fiber_guard_page.d: Update test to
	support ucontext-based Fibers.