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* [gcc r12-6977] Fortran: error recovery when simplifying EOSHIFT
@ 2022-02-01 20:37 Harald Anlauf
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From: Harald Anlauf @ 2022-02-01 20:37 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:447047a8f95c6bf4b1873f390c833e91aa8af18c
commit r12-6977-g447047a8f95c6bf4b1873f390c833e91aa8af18c
Author: Harald Anlauf <anlauf@gmx.de>
Date: Tue Feb 1 21:36:42 2022 +0100
Fortran: error recovery when simplifying EOSHIFT
gcc/fortran/ChangeLog:
PR fortran/104331
* simplify.cc (gfc_simplify_eoshift): Avoid NULL pointer
dereference when shape is not set.
gcc/testsuite/ChangeLog:
PR fortran/104331
* gfortran.dg/eoshift_9.f90: New test.
Diff:
---
gcc/fortran/simplify.cc | 3 +++
gcc/testsuite/gfortran.dg/eoshift_9.f90 | 8 ++++++++
2 files changed, 11 insertions(+)
diff --git a/gcc/fortran/simplify.cc b/gcc/fortran/simplify.cc
index 8604162cfd5..6483f9c31e7 100644
--- a/gcc/fortran/simplify.cc
+++ b/gcc/fortran/simplify.cc
@@ -2572,6 +2572,9 @@ gfc_simplify_eoshift (gfc_expr *array, gfc_expr *shift, gfc_expr *boundary,
if (arraysize == 0)
goto final;
+ if (array->shape == NULL)
+ goto final;
+
arrayvec = XCNEWVEC (gfc_expr *, arraysize);
array_ctor = gfc_constructor_first (array->value.constructor);
for (i = 0; i < arraysize; i++)
diff --git a/gcc/testsuite/gfortran.dg/eoshift_9.f90 b/gcc/testsuite/gfortran.dg/eoshift_9.f90
new file mode 100644
index 00000000000..f711b04a7da
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/eoshift_9.f90
@@ -0,0 +1,8 @@
+! { dg-do compile }
+! PR fortran/104331 - ICE in gfc_simplify_eoshift
+! Contributed by G.Steinmetz
+
+program p
+ character(3), parameter :: a(:) = ['123'] ! { dg-error "deferred shape" }
+ character(3), parameter :: b(*) = eoshift(a, 1)
+end
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