diff options
Diffstat (limited to 'gcc/ada/sem_ch3.adb')
| -rw-r--r-- | gcc/ada/sem_ch3.adb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb index 16bfbeb539a..5cc06e7d899 100644 --- a/gcc/ada/sem_ch3.adb +++ b/gcc/ada/sem_ch3.adb @@ -11799,6 +11799,11 @@ package body Sem_Ch3 is -- needed, since checks may cause duplication of the expressions -- which must not be reevaluated. + -- The forced evaluation removes side effects from expressions, + -- which should occur also in Alfa mode. Otherwise, we end up with + -- unexpected insertions of actions at places where this is not + -- supposed to occur, e.g. on default parameters of a call. + if Expander_Active then Force_Evaluation (Low_Bound (R)); Force_Evaluation (High_Bound (R)); @@ -18339,6 +18344,11 @@ package body Sem_Ch3 is -- if needed, before applying checks, since checks may cause -- duplication of the expression without forcing evaluation. + -- The forced evaluation removes side effects from expressions, + -- which should occur also in Alfa mode. Otherwise, we end up with + -- unexpected insertions of actions at places where this is not + -- supposed to occur, e.g. on default parameters of a call. + if Expander_Active then Force_Evaluation (Lo); Force_Evaluation (Hi); @@ -18449,6 +18459,11 @@ package body Sem_Ch3 is -- Case of other than an explicit N_Range node + -- The forced evaluation removes side effects from expressions, which + -- should occur also in Alfa mode. Otherwise, we end up with unexpected + -- insertions of actions at places where this is not supposed to occur, + -- e.g. on default parameters of a call. + elsif Expander_Active then Get_Index_Bounds (R, Lo, Hi); Force_Evaluation (Lo); |
