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author | Steve Baird <baird@adacore.com> | 2024-02-15 14:49:18 -0800 |
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committer | Marc Poulhiès <poulhies@adacore.com> | 2024-05-16 10:49:27 +0200 |
commit | 91c6302c8d641990f8977bf8eb5a40370da6efa9 (patch) | |
tree | 2f127790f7b3f35cdd16d757b7d71401bb1965f4 | |
parent | e730d52a9459d1112e888858c7286aab0e358fac (diff) | |
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ada: Formal_Derived_Type'Size is not static
In deciding whether a Size attribute reference is static, the compiler could
get confused about whether an implicitly-declared subtype of a generic formal
type is itself a generic formal type, possibly resulting in an assertion
failure and then a bugbox.
gcc/ada/
* sem_attr.adb (Eval_Attribute): Expand existing checks for
generic formal types for which Is_Generic_Type returns False. In
that case, mark the attribute reference as nonstatic.
-rw-r--r-- | gcc/ada/sem_attr.adb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb index 65442d4..2fa7d7d 100644 --- a/gcc/ada/sem_attr.adb +++ b/gcc/ada/sem_attr.adb @@ -8685,10 +8685,20 @@ package body Sem_Attr is -- If the root type or base type is generic, then we cannot fold. This -- test is needed because subtypes of generic types are not always -- marked as being generic themselves (which seems odd???) + -- + -- Should this situation be addressed instead by either + -- a) setting Is_Generic_Type in more cases + -- or b) replacing preceding calls to Is_Generic_Type with calls to + -- Sem_Util.Some_New_Function + -- so that we wouldn't have to deal with these cases here ??? if Is_Generic_Type (P_Root_Type) or else Is_Generic_Type (P_Base_Type) + or else (Present (Associated_Node_For_Itype (P_Base_Type)) + and then Is_Generic_Type (Defining_Identifier + (Associated_Node_For_Itype (P_Base_Type)))) then + Set_Is_Static_Expression (N, False); return; end if; |