Dear all,
we ICE'd in the simplification of FINDLOC when the passed
ARRAY argument had an invalid declaration. The reason was
a reference to array->shape which was NULL.
Obvious solution: then just don't attempt to simplify.
Regtested on x86_64-pc-linux-gnu and pushed to mainline as
https://gcc.gnu.org/g:5976fbf9d5dd9542fcb82eebb2185886fd52d000
The PR is marked as a 10/11/12/13 regression, thus I plan to
backport.
Thanks,
Harald
From 5976fbf9d5dd9542fcb82eebb2185886fd52d000 Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anl...@gmx.de>
Date: Tue, 20 Sep 2022 22:41:48 +0200
Subject: [PATCH] Fortran: error recovery on invalid ARRAY argument to FINDLOC
[PR106986]
gcc/fortran/ChangeLog:
PR fortran/106986
* simplify.cc (gfc_simplify_findloc): Do not try to simplify
intrinsic FINDLOC when the ARRAY argument has a NULL shape.
gcc/testsuite/ChangeLog:
PR fortran/106986
* gfortran.dg/pr106986.f90: New test.
---
gcc/fortran/simplify.cc | 1 +
gcc/testsuite/gfortran.dg/pr106986.f90 | 8 ++++++++
2 files changed, 9 insertions(+)
create mode 100644 gcc/testsuite/gfortran.dg/pr106986.f90
diff --git a/gcc/fortran/simplify.cc b/gcc/fortran/simplify.cc
index 140c17721a7..c0fbd0ed7c2 100644
--- a/gcc/fortran/simplify.cc
+++ b/gcc/fortran/simplify.cc
@@ -5895,6 +5895,7 @@ gfc_simplify_findloc (gfc_expr *array, gfc_expr *value, gfc_expr *dim,
bool back_val = false;
if (!is_constant_array_expr (array)
+ || array->shape == NULL
|| !gfc_is_constant_expr (dim))
return NULL;
diff --git a/gcc/testsuite/gfortran.dg/pr106986.f90 b/gcc/testsuite/gfortran.dg/pr106986.f90
new file mode 100644
index 00000000000..a309b25d181
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr106986.f90
@@ -0,0 +1,8 @@
+! { dg-do compile }
+! PR fortran/106986 - ICE in simplify_findloc_nodim
+! Contributed by G.Steinmetz
+
+program p
+ integer, parameter :: a(:) = [1] ! { dg-error "deferred shape" }
+ print *, findloc (a, 1)
+end
--
2.35.3
