Dear all, I've committed the attached fix for a NULL pointer dereference as obvious after a discussion with Steve in the PR, and successful regtesting on x86_64-pc-linux-gnu, as r13-2382.
See also https://gcc.gnu.org/g:b6aa7d45b502c01f8703c8d2cee2690f9aa8e282 Thanks, Harald
From b6aa7d45b502c01f8703c8d2cee2690f9aa8e282 Mon Sep 17 00:00:00 2001 From: Harald Anlauf <anl...@gmx.de> Date: Fri, 2 Sep 2022 21:07:26 +0200 Subject: [PATCH] Fortran: avoid NULL pointer dereference on invalid DATA constant [PR99349] gcc/fortran/ChangeLog: PR fortran/99349 * decl.cc (match_data_constant): Avoid NULL pointer dereference. gcc/testsuite/ChangeLog: PR fortran/99349 * gfortran.dg/pr99349.f90: New test. Co-authored-by: Steven G. Kargl <ka...@gcc.gnu.org> --- gcc/fortran/decl.cc | 3 ++- gcc/testsuite/gfortran.dg/pr99349.f90 | 9 +++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gfortran.dg/pr99349.f90 diff --git a/gcc/fortran/decl.cc b/gcc/fortran/decl.cc index b6400514731..0f9b2ced4c2 100644 --- a/gcc/fortran/decl.cc +++ b/gcc/fortran/decl.cc @@ -423,7 +423,8 @@ match_data_constant (gfc_expr **result) data-pointer-initialization compatible (7.5.4.6) with the initial data target; the data statement object is initially associated with the target. */ - if ((*result)->symtree->n.sym->attr.save + if ((*result)->symtree + && (*result)->symtree->n.sym->attr.save && (*result)->symtree->n.sym->attr.target) return m; gfc_free_expr (*result); diff --git a/gcc/testsuite/gfortran.dg/pr99349.f90 b/gcc/testsuite/gfortran.dg/pr99349.f90 new file mode 100644 index 00000000000..e1f4628af0b --- /dev/null +++ b/gcc/testsuite/gfortran.dg/pr99349.f90 @@ -0,0 +1,9 @@ +! { dg-do compile } +! PR fortran/99349 - ICE in match_data_constant +! Contributed by G.Steinmetz + +function f() + logical, parameter :: a((1.)/0) = .true. ! { dg-error "Parameter array" } + integer :: b + data b /a%kind/ ! { dg-error "Syntax error" } +end -- 2.35.3