Blame SOURCES/0007-Allow-more-than-one-character-as-argument-to-ICHAR.patch

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From d75972937274489189a151a47da9b9aadfdefe8d Mon Sep 17 00:00:00 2001
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From: Jim MacArthur <jim.macarthur@codethink.co.uk>
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Date: Mon, 5 Oct 2015 13:45:15 +0100
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Subject: [PATCH 07/23] Allow more than one character as argument to ICHAR
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This feature is enabled by the `-std=extra-legacy` compiler flag.
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---
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commit 44861a8907c8d849193287231a464d34fcce522d
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Author: Jim MacArthur <jim.macarthur@codethink.co.uk>
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Date:   Mon Oct 5 13:45:15 2015 +0100
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    Allow more than one character as argument to ICHAR
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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/check.c b/gcc/fortran/check.c
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index 4f2d21610b9..38a90519c81 100644
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--- a/gcc/fortran/check.c
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+++ b/gcc/fortran/check.c
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@@ -2472,7 +2472,7 @@ gfc_check_ichar_iachar (gfc_expr *c, gfc_expr *kind)
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   else
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     return true;
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-  if (i != 1)
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+  if (i != 1 && !(gfc_option.allow_std & GFC_STD_EXTRA_LEGACY))
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     {
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       gfc_error ("Argument of %s at %L must be of length one",
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 		 gfc_current_intrinsic, &c->where);
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diff --git a/gcc/fortran/simplify.c b/gcc/fortran/simplify.c
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index 80c96371ad9..6e05bb444ed 100644
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--- a/gcc/fortran/simplify.c
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+++ b/gcc/fortran/simplify.c
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@@ -2774,7 +2774,7 @@ gfc_simplify_iachar (gfc_expr *e, gfc_expr *kind)
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   if (e->expr_type != EXPR_CONSTANT)
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     return NULL;
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-  if (e->value.character.length != 1)
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+  if (e->value.character.length != 1 && !(gfc_option.allow_std & GFC_STD_EXTRA_LEGACY))
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     {
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       gfc_error ("Argument of IACHAR at %L must be of length one", &e->where);
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       return &gfc_bad_expr;
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@@ -2972,7 +2972,7 @@ gfc_simplify_ichar (gfc_expr *e, gfc_expr *kind)
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   if (e->expr_type != EXPR_CONSTANT)
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     return NULL;
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-  if (e->value.character.length != 1)
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+  if (e->value.character.length != 1 && !(gfc_option.allow_std & GFC_STD_EXTRA_LEGACY))
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     {
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       gfc_error ("Argument of ICHAR at %L must be of length one", &e->where);
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       return &gfc_bad_expr;
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diff --git a/gcc/testsuite/gfortran.dg/dec_ichar_with_string.f b/gcc/testsuite/gfortran.dg/dec_ichar_with_string.f
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new file mode 100644
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index 00000000000..c97746d4a4e
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--- /dev/null
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+++ b/gcc/testsuite/gfortran.dg/dec_ichar_with_string.f
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@@ -0,0 +1,18 @@
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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 ICHAR and IACHAR with more than one character as argument
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+!
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+        PROGRAM ichar_more_than_one_character
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+          CHARACTER*4 st/'Test'/
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+          INTEGER i
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+
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+          i = ICHAR(st)
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+          if (i.NE.84) STOP 1
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+          i = IACHAR(st)
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+          if (i.NE.84) STOP 2
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+          i = ICHAR('Test')
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+          if (i.NE.84) STOP 3
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+          i = IACHAR('Test')
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+          if (i.NE.84) STOP 4
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+        END