2017-09-25  Yannick Moy  <moy@adacore.com>

	* exp_spark.adb (Expand_SPARK_Indexed_Component,
	Expand_SPARK_Selected_Component): New procedures to insert explicit
	dereference if required.
	(Expand_SPARK): Call the new procedures.

2017-09-25  Patrick Bernardi  <bernardi@adacore.com>

	* libgnat/a-stwiun.adb, libgnat/s-stchop__vxworks.adb,
	libgnat/g-socthi__vxworks.ads, libgnat/a-stzunb.adb,
	libgnat/a-strunb.adb, libgnarl/s-osinte__lynxos178.adb,
	libgnarl/s-intman__vxworks.adb, libgnarl/s-osinte__darwin.adb,
	libgnarl/a-exetim__darwin.adb: Removed ineffective use-clauses.

2017-09-25  Vasiliy Fofanov  <fofanov@adacore.com>

	* adaint.c (win32_wait): Properly handle error and take into account
	the WIN32 limitation on the number of simultaneous wait objects.

2017-09-25  Yannick Moy  <moy@adacore.com>

	* sem_ch3.adb (Constant_Redeclaration): Do not insert a call to the
	invariant procedure in GNATprove mode.
	* sem_ch5.adb (Analyze_Assignment): Likewise.

From-SVN: r253143