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* [gcc r11-1695] PR fortran/95340 - ICE in gfc_match_select_rank, at fortran/match.c:6690
@ 2020-06-28 14:24 Harald Anlauf
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From: Harald Anlauf @ 2020-06-28 14:24 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:b62cac6d92ff251213753475b69ec0b269cb7fae
commit r11-1695-gb62cac6d92ff251213753475b69ec0b269cb7fae
Author: Harald Anlauf <anlauf@gmx.de>
Date: Sun Jun 28 16:24:15 2020 +0200
PR fortran/95340 - ICE in gfc_match_select_rank, at fortran/match.c:6690
Do not dereference NULL pointer when querying array shape of possibly
improperly delared variable.
gcc/fortran/
PR fortran/95340
* match.c (gfc_match_select_rank): Do not dereference NULL pointer.
Diff:
---
gcc/fortran/match.c | 3 ++-
gcc/testsuite/gfortran.dg/pr95340.f90 | 10 ++++++++++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/gcc/fortran/match.c b/gcc/fortran/match.c
index b011634792e..db5174f3f21 100644
--- a/gcc/fortran/match.c
+++ b/gcc/fortran/match.c
@@ -6695,7 +6695,8 @@ gfc_match_select_rank (void)
if (expr1->symtree)
{
sym = expr1->symtree->n.sym;
- as = sym->ts.type == BT_CLASS ? CLASS_DATA (sym)->as : sym->as;
+ as = (sym->ts.type == BT_CLASS
+ && CLASS_DATA (sym)) ? CLASS_DATA (sym)->as : sym->as;
}
if (expr1->expr_type != EXPR_VARIABLE
diff --git a/gcc/testsuite/gfortran.dg/pr95340.f90 b/gcc/testsuite/gfortran.dg/pr95340.f90
new file mode 100644
index 00000000000..edcdc935057
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr95340.f90
@@ -0,0 +1,10 @@
+! { dg-do compile }
+! PR fortran/95340 - ICE in gfc_match_select_rank, at fortran/match.c:6690
+
+program p
+ type t
+ end type t
+ class(t) :: z ! { dg-error "must be dummy, allocatable or pointer" }
+ select rank (z) ! { dg-error "must be an assumed rank variable" }
+ end select ! { dg-error "Expecting END PROGRAM" }
+end
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2020-06-28 14:24 [gcc r11-1695] PR fortran/95340 - ICE in gfc_match_select_rank, at fortran/match.c:6690 Harald Anlauf
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