gcc/ada/
	PR ada/28305
	* sem_ch6.adb (Build_Body_To_Inline): Do not save and restore
	environment if generic instance is a top-level one.

    gcc/testsuite/
	PR ada/28305
	* gnat.dg/specs/fe_inlining.ads, gnat.dg/specs/fe_inlining_helper.ads,
	gnat.dg/specs/fe_inlining_helper.adb: New test.

From-SVN: r134142