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[COMMITTED] ada: Improve defense against illegal code in check for infinite loops
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Checks
Context | Check | Description |
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snail/gcc-patch-check | success | Github commit url |
Commit Message
Marc Poulhiès
July 28, 2023, 7:30 a.m. UTC
From: Piotr Trojanek <trojanek@adacore.com>
Fix crash occurring when attribute System'To_Address is used without
a WITH clause for package System.
gcc/ada/
* sem_warn.adb (Check_Infinite_Loop_Warning): Don't look at the type of
actual parameter when it has no type at all, e.g. because the entire
subprogram call is illegal.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/sem_warn.adb | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/ada/sem_warn.adb b/gcc/ada/sem_warn.adb index 5dd7c17d4e2..7ecb4d9c4a6 100644 --- a/gcc/ada/sem_warn.adb +++ b/gcc/ada/sem_warn.adb @@ -591,7 +591,9 @@ package body Sem_Warn is begin Actual := First_Actual (N); while Present (Actual) loop - if Is_Access_Subprogram_Type (Etype (Actual)) then + if No (Etype (Actual)) + or else Is_Access_Subprogram_Type (Etype (Actual)) + then return Abandon; else Next_Actual (Actual);