[Fortran] ICE: Invalid expression in gfc_element_size PR93601

ICE occurs when assigning a BOZ constant to an class(*) variable
with the allocatable attribute. Use of BOZ constants outside
data statements and int/real/dble/cmplx intrinsics is not allowed.

Original patch provided by Steven G. Kargl  <kargl@gcc.gnu.org>.

gcc/fortran/ChangeLog

	PR fortran/93601
	* match.c (gfc_match_assignment) : Reject assignment if
	the lhs stype is BT_CLASS and the rhs type is BT_BOZ.

gcc/testsuite/ChangeLog

	PR fortran/93601
	* gfortran.dg/pr93601.f90 : New test.

diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 2e874b83c64a2f65b34bf4bfa30819eb8d42aa71..5daaefdee9bd9368d61c2ed5310ecf2f95287032 100644 (file)
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+       PR fortran/93601
+       * match.c (gfc_match_assignment) : Reject assignment if
+       the lhs stype is BT_CLASS and the rhs type is BT_BOZ.
+
 2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>
 
        PR fortran/93603

diff --git a/gcc/fortran/match.c b/gcc/fortran/match.c
index 9c2ec41c49c620caa865ee16b8de460fb2c0a837..e4d52245976022a7d7193729b8899b7d8fb042f5 100644 (file)
--- a/gcc/fortran/match.c
+++ b/gcc/fortran/match.c
@@ -1348,6 +1348,16 @@ gfc_match_assignment (void)
   rvalue = NULL;
   m = gfc_match (" %e%t", &rvalue);
 
+  if (m == MATCH_YES
+      && rvalue->ts.type == BT_BOZ
+      && lvalue->ts.type == BT_CLASS)
+    {
+      m = MATCH_ERROR;
+      gfc_error ("BOZ literal constant at %L is neither a DATA statement "
+                "value nor an actual argument of INT/REAL/DBLE/CMPLX "
+                "intrinsic subprogram", &rvalue->where);
+    }
+
   if (lvalue->expr_type == EXPR_CONSTANT)
     {
       /* This clobbers %len and %kind.  */

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9f7a4f7a61d2a10be97b308bf03ecc8c1a7cfe75..6b008fde20250a00097550b97ac9a94ab209c1c4 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-02-18  Mark Eggleston  <mark.eggleston@codethink.com>
+
+       PR fortran/93601
+       * gfortran.dg/pr93601.f90 : New test.
+
 2020-02-18  Martin Liska  <mliska@suse.cz>
 
        PR ipa/93583

diff --git a/gcc/testsuite/gfortran.dg/pr93601.f90 b/gcc/testsuite/gfortran.dg/pr93601.f90
new file mode 100644 (file)
index 0000000..495447c
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr93601.f90
@@ -0,0 +1,7 @@
+! { dg-do compile }
+
+program p
+   class(*), allocatable :: z
+   z = z'1' ! { dg-error "BOZ literal constant at" }
+end
+