gcc/ada/

2017-12-15  Ed Schonberg  <schonberg@adacore.com>

	* exp_unst.adb (Unnest_Subprograms): Nothing to do if the main unit is
	a generic package body. Unnesting is only an issue when generating
	code, and if the main unit is generic then nested instance bodies have
	not been created and analyzed, and unnesting will crash in the absence
	of those bodies,

2017-12-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* inline.adb (Add_Inlined_Body): Do not add a function which is
	completed by an expression function defined in the same context as the
	initial declaration because the completing body is not in a package
	body.
	(Is_Non_Loading_Expression_Function): New routine.

2017-12-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* debug.adb: Move the functionality of -gnatdL to -gnatd_i. Restore
	the behavior of -gnatdL from before revision 255412.
	* sem_elab.adb: Update the section of compiler switches.
	(Build_Call_Marker): Do not create a marker for a call which originates
	from an expanded spec or body of an instantiated gener, does not invoke
	a generic formal subprogram, the target is external to the instance,
	and -gnatdL is in effect.
	(In_External_Context): New routine.
	(Process_Conditional_ABE_Activation_Impl): Update the uses of -gnatdL
	and associated flag.
	(Process_Conditional_ABE_Call): Update the uses of -gnatdL and
	associated flag.
	* switch-c.adb (Scan_Front_End_Switches): Switch -gnatJ now sets switch
	-gnatd_i.
	* exp_unst.adb: Minor typo fixes and edits.

2017-12-15  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Possible_Freeze): Do not set Delayed_Freeze on an
	subprogram instantiation, now that the enclosing wrapper package
	carries an explicit freeze node. THis prevents freeze nodes for the
	subprogram for appearing in the wrong scope. This is relevant when the
	generic subprogram has a private or incomplete formal type and the
	instance appears within a package that declares the actual type for the
	instantiation, and that type has itself a delayed freeze.

2017-12-15  Patrick Bernardi  <bernardi@adacore.com>

	* doc/gnat_ugn/gnat_and_program_execution.rst: Removed references to
	the environment variable GNAT_STACK_LIMIT from the Stack Overflow
	Checking section as it is no longer used by any of our supported
	targets.

gcc/testsuite/

2017-12-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* gnat.dg/expr_func_main.adb, gnat.dg/expr_func_pkg.ads,
	gnat.dg/expr_func_pkg.adb: New testcase.

2017-12-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* gnat.dg/abe_pkg.adb, gnat.dg/abe_pkg.ads: New testcase.

2017-12-15  Ed Schonberg  <schonberg@adacore.com>

	* gnat.dg/subp_inst.adb, gnat.dg/subp_inst_pkg.adb,
	gnat.dg/subp_inst_pkg.ads: New testcase.

From-SVN: r255683