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* [gcc r12-3746] [Ada] Crash on build of Initialization procedure for derived container
@ 2021-09-21 15:27 Pierre-Marie de Rodat
  0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2021-09-21 15:27 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:dbea36c6bde7bd32ad645b0d472c5674e2db744d

commit r12-3746-gdbea36c6bde7bd32ad645b0d472c5674e2db744d
Author: Ed Schonberg <schonberg@adacore.com>
Date:   Wed Jul 7 10:56:48 2021 -0400

    [Ada] Crash on build of Initialization procedure for derived container
    
    gcc/ada/
    
            * exp_ch7.adb (Make_Init_Call): Add guard to protect against a
            missing initialization procedure for a type.

Diff:
---
 gcc/ada/exp_ch7.adb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/ada/exp_ch7.adb b/gcc/ada/exp_ch7.adb
index 33e4f3a4ab3..8d08ff12ed5 100644
--- a/gcc/ada/exp_ch7.adb
+++ b/gcc/ada/exp_ch7.adb
@@ -9555,8 +9555,11 @@ package body Exp_Ch7 is
 
       --  If initialization procedure for an array of controlled objects is
       --  trivial, do not generate a useless call to it.
+      --  The initialization procedure may be missing altogether in the case
+      --  of a derived container whose components have trivial initialization.
 
-      if (Is_Array_Type (Utyp) and then Is_Trivial_Subprogram (Proc))
+      if No (Proc)
+        or else (Is_Array_Type (Utyp) and then Is_Trivial_Subprogram (Proc))
         or else
           (not Comes_From_Source (Proc)
             and then Present (Alias (Proc))


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