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* [gcc r12-1627] [Ada] Error issued on string literal assigned to fixed-lower-bound array
@ 2021-06-18 8:39 Pierre-Marie de Rodat
0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2021-06-18 8:39 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:f44441d80fa8523a2e1b294b8563180202879727
commit r12-1627-gf44441d80fa8523a2e1b294b8563180202879727
Author: Gary Dismukes <dismukes@adacore.com>
Date: Thu Mar 18 20:23:04 2021 -0400
[Ada] Error issued on string literal assigned to fixed-lower-bound array
gcc/ada/
* exp_util.adb (Expand_Sliding_Conversion): Move test of
Is_Fixed_Lower_Bound_Subtype to an assertion. Exclude string
literals from sliding expansion.
Diff:
---
gcc/ada/exp_util.adb | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/gcc/ada/exp_util.adb b/gcc/ada/exp_util.adb
index 19b8c656e2c..ed1a016be48 100644
--- a/gcc/ada/exp_util.adb
+++ b/gcc/ada/exp_util.adb
@@ -5323,7 +5323,8 @@ package body Exp_Util is
procedure Expand_Sliding_Conversion (N : Node_Id; Arr_Typ : Entity_Id) is
pragma Assert (Is_Array_Type (Arr_Typ)
- and then not Is_Constrained (Arr_Typ));
+ and then not Is_Constrained (Arr_Typ)
+ and then Is_Fixed_Lower_Bound_Array_Subtype (Arr_Typ));
Constraints : List_Id;
Index : Node_Id := First_Index (Arr_Typ);
@@ -5342,7 +5343,10 @@ package body Exp_Util is
All_FLBs_Match : Boolean := True;
begin
- if Is_Fixed_Lower_Bound_Array_Subtype (Arr_Typ) then
+ -- Sliding should never be needed for string literals, because they have
+ -- their bounds set according to the applicable index constraint.
+
+ if Nkind (N) /= N_String_Literal then
Constraints := New_List;
Act_Subt := Get_Actual_Subtype (N);
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2021-06-18 8:39 [gcc r12-1627] [Ada] Error issued on string literal assigned to fixed-lower-bound array Pierre-Marie de Rodat
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