Commit 56d3a930 by Fritz Reese Committed by Fritz Reese

Fix ICE due to map typespecs with different sized charlens being copied.

2016-10-07  Fritz Reese  <fritzoreese@gmail.com>

Fix ICE due to map typespecs with different sized charlens being copied.

	gcc/fortran/
	* interface.c (compare_components): Check charlen for BT_CHAR.

	gcc/testsuite/gfortran.dg/
	* dec_union_11.f90: New testcase.

From-SVN: r240875
parent 45e2bf2e
2016-10-07 Fritz Reese <fritzoreese@gmail.com>
* interface.c (compare_components): Check charlen for BT_CHAR.
2016-10-07 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/77406
......
......@@ -495,6 +495,17 @@ compare_components (gfc_component *cmp1, gfc_component *cmp2,
if (cmp1->attr.dimension && gfc_compare_array_spec (cmp1->as, cmp2->as) == 0)
return 0;
if (cmp1->ts.type == BT_CHARACTER && cmp2->ts.type == BT_CHARACTER)
{
gfc_charlen *l1 = cmp1->ts.u.cl;
gfc_charlen *l2 = cmp2->ts.u.cl;
if (l1 && l2 && l1->length && l2->length
&& l1->length->expr_type == EXPR_CONSTANT
&& l2->length->expr_type == EXPR_CONSTANT
&& gfc_dep_compare_expr (l1->length, l2->length) != 0)
return 0;
}
/* Make sure that link lists do not put this function into an
endless recursive loop! */
if (!(cmp1->ts.type == BT_DERIVED && derived1 == cmp1->ts.u.derived)
......
2016-10-07 Fritz Reese <fritzoreese@gmail.com>
* gfortran.dg/dec_union_11.f90: New testcase.
2016-10-07 Nathan Sidwell <nathan@acm.org>
PR c++/66443
......
! { dg-do compile }
! { dg-options "-g -fdec-structure" }
!
! Test a regression where typespecs of unions containing character buffers of
! different lengths where copied, resulting in a bad gimple tree state.
!
subroutine sub2 (otherbuf)
integer, parameter :: L_bbuf = 65536
integer, parameter :: L_bbuf2 = 24
structure /buffer2/
union
map
character(L_bbuf2) sbuf
end map
end union
end structure
structure /buffer/
union
map
character(L_bbuf) sbuf
end map
end union
end structure
record /buffer/ buf1
record /buffer2/ buf2
common /c/ buf1, buf2
record /buffer2/ otherbuf
end subroutine
subroutine sub()
integer, parameter :: L_bbuf = 65536
integer, parameter :: L_bbuf2 = 24
structure /buffer2/
union
map
character(L_bbuf2) sbuf
end map
end union
end structure
structure /buffer/
union
map
character(L_bbuf) sbuf
end map
end union
end structure
record /buffer/ buf1
record /buffer2/ buf2
common /c/ buf1, buf2
call sub2 (buf1) ! { dg-warning "Type mismatch" }
return
end subroutine
call sub()
end
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