* [Ada] Crash on task declaration with Restriction_Warning (No_Tasking)
@ 2020-11-26 8:41 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2020-11-26 8:41 UTC (permalink / raw)
To: gcc-patches; +Cc: Ed Schonberg
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Compiler aborts when the Restriction_Warning (No_Tasking) appears as a
configuration pragma, and the main unit includes a task declaration.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_prag.adb (Process_Restrictions_Or_Restriction_Warnings):
when the restriction is a configuration pragma and specifies
No_Tasking, a global flag is set to reject task declarations,
and to prevent the construction of Master entities. The flag
must not be set if the pragma is a Restriction_Warning, in which
case task declarationns are allowed.
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diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -10438,10 +10438,13 @@ package body Sem_Prag is
Add_To_Config_Boolean_Restrictions (No_Elaboration_Code);
end if;
- -- Special processing for No_Tasking restriction placed in
- -- a configuration pragmas file.
+ -- Special processing for No_Tasking restriction (not just a
+ -- warning) when it appears as a configuration pragmas.
- elsif R_Id = No_Tasking and then No (Cunit (Main_Unit)) then
+ elsif R_Id = No_Tasking
+ and then No (Cunit (Main_Unit))
+ and then not Warn
+ then
Set_Global_No_Tasking;
end if;
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2020-11-26 8:41 [Ada] Crash on task declaration with Restriction_Warning (No_Tasking) Pierre-Marie de Rodat
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