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From: Giuliano Belinassi <giulianob@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc/devel/autopar_devel] [Ada] Subtype inherits Atomic flag from base type Date: Sat, 22 Aug 2020 22:06:21 +0000 (GMT) [thread overview] Message-ID: <20200822220621.4AC3E3850410@sourceware.org> (raw) https://gcc.gnu.org/g:ae1ff15f17254489cccfb307656b3ce1d4fc4300 commit ae1ff15f17254489cccfb307656b3ce1d4fc4300 Author: Ed Schonberg <schonberg@adacore.com> Date: Wed Feb 5 11:38:38 2020 -0500 [Ada] Subtype inherits Atomic flag from base type 2020-06-05 Ed Schonberg <schonberg@adacore.com> gcc/ada/ * sem_ch3.adb (Analyze_Subtype_Declaration): For scalar types, and for subtype declarations without a constraint, subtype inherits Atomic flag from base type. Diff: --- gcc/ada/sem_ch3.adb | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb index 3c65a340ff1..4d6382e59d4 100644 --- a/gcc/ada/sem_ch3.adb +++ b/gcc/ada/sem_ch3.adb @@ -5804,6 +5804,15 @@ package body Sem_Ch3 is end if; end if; + -- If the base type is a scalar type, or else if there is no + -- constraint, the atomic flag is inherited by the subtype. + + if Is_Scalar_Type (Id) + or else Is_Entity_Name (Subtype_Indication (N)) + then + Set_Is_Atomic (Id, Is_Atomic (T)); + end if; + -- Remaining processing depends on characteristics of base type T := Etype (Id);
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