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From fdda38024c7151ca632cb338085af80ceb63ec4d Mon Sep 17 00:00:00 2001
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From: Jim MacArthur <jim.macarthur@codethink.co.uk>
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Date: Wed, 18 Nov 2015 15:08:56 +0000
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Subject: [PATCH 17/23] Add the SEQUENCE attribute by default if it's not
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present.
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This feature is enabled by the `-std=extra-legacy` compiler flag.
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0017-Add-the-SEQUENCE-attribute-by-default-if-it-s-not-pr.patch
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commit 1635277d719de05fbd37a2887273ce893bf43198
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Author: Jim MacArthur <jim.macarthur@codethink.co.uk>
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Date: Wed Nov 18 15:08:56 2015 +0000
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Add the SEQUENCE attribute by default if it's not present.
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This feature is enabled by the `-std=extra-legacy` compiler flag.
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Test written by: Francisco Redondo Marchena <francisco.marchena@codethink.co.uk>
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diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c
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index 2e60984b3bd..022b9230ec9 100644
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--- a/gcc/fortran/resolve.c
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+++ b/gcc/fortran/resolve.c
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@@ -963,9 +963,16 @@ resolve_common_vars (gfc_common_head *common_block, bool named_common)
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if (!(csym->ts.u.derived->attr.sequence
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|| csym->ts.u.derived->attr.is_bind_c))
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- gfc_error_now ("Derived type variable %qs in COMMON at %L "
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- "has neither the SEQUENCE nor the BIND(C) "
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- "attribute", csym->name, &csym->declared_at);
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+ {
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+ if (gfc_option.allow_std & GFC_STD_EXTRA_LEGACY)
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+ /* Assume sequence. */
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+ csym->ts.u.derived->attr.sequence = 1;
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+ else
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+ gfc_error_now ("Derived type variable '%s' in COMMON at %L "
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+ "has neither the SEQUENCE nor the BIND(C) "
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+ "attribute", csym->name, &csym->declared_at);
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+ }
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+
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if (csym->ts.u.derived->attr.alloc_comp)
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gfc_error_now ("Derived type variable %qs in COMMON at %L "
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"has an ultimate component that is "
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diff --git a/gcc/testsuite/gfortran.dg/dec_add_SEQUENCE_to_COMMON_block_by_default.f b/gcc/testsuite/gfortran.dg/dec_add_SEQUENCE_to_COMMON_block_by_default.f
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new file mode 100644
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index 00000000000..c0851c8bc77
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--- /dev/null
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+++ b/gcc/testsuite/gfortran.dg/dec_add_SEQUENCE_to_COMMON_block_by_default.f
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@@ -0,0 +1,17 @@
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+! { dg-do compile }
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+! { dg-options "-std=extra-legacy" }
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+!
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+! Test add default SEQUENCE attribute to COMMON blocks
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+!
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+ PROGRAM sequence_att_common
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+ TYPE STRUCT1
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+ INTEGER*4 ID
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+ INTEGER*4 TYPE
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+ INTEGER*8 DEFVAL
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+ CHARACTER*(4) NAME
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+ LOGICAL*1 NIL
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+ END TYPE STRUCT1
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+
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+ TYPE (STRUCT1) SINST
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+ COMMON /BLOCK1/ SINST
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+ END
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