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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2012-01-04 11:51:37 +0000 |
|---|---|---|
| committer | Thomas Koenig <tkoenig@gcc.gnu.org> | 2012-01-04 11:51:37 +0000 |
| commit | 74d1a34e8600c3b8254eb198ef450e761598a18c (patch) | |
| tree | 4f7a38767df412f3c9e721f2e59451985054ff7d /gcc | |
| parent | 925b0ed82128abe666ae80e17e2191a786dde654 (diff) | |
| download | gcc-74d1a34e8600c3b8254eb198ef450e761598a18c.zip gcc-74d1a34e8600c3b8254eb198ef450e761598a18c.tar.gz gcc-74d1a34e8600c3b8254eb198ef450e761598a18c.tar.bz2 | |
re PR fortran/49693 (Spurious "unused-variable" warnings for COMMON block module variables.)
2012-01-04 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/49693
* trans-common.c (create_common): Update copyright years. Mark
variables as used to avoid warnings about unused variables in
common blocks.
2012-01-04 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/49693
* gfortran.dg/common_17.f90: New test.
From-SVN: r182869
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/fortran/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/fortran/trans-common.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gfortran.dg/common_17.f90 | 11 |
4 files changed, 28 insertions, 2 deletions
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog index d752513..305646f 100644 --- a/gcc/fortran/ChangeLog +++ b/gcc/fortran/ChangeLog @@ -1,3 +1,10 @@ +2012-01-04 Thomas Koenig <tkoenig@gcc.gnu.org> + + PR fortran/49693 + * trans-common.c (create_common): Update copyright years. Mark + variables as used to avoid warnings about unused variables in + common blocks. + 2012-01-03 Hans-Peter Nilsson <hp@axis.com> * gfortran.h (struct gfc_expr): Add missing "struct" diff --git a/gcc/fortran/trans-common.c b/gcc/fortran/trans-common.c index 61ce44b..22aa350 100644 --- a/gcc/fortran/trans-common.c +++ b/gcc/fortran/trans-common.c @@ -1,5 +1,6 @@ /* Common block and equivalence list handling - Copyright (C) 2000, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Copyright (C) 2000, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, + 2011, 2012 Free Software Foundation, Inc. Contributed by Canqun Yang <canqun@nudt.edu.cn> @@ -689,7 +690,9 @@ create_common (gfc_common_head *com, segment_info *head, bool saw_equiv) VAR_DECL, DECL_NAME (s->field), TREE_TYPE (s->field)); TREE_STATIC (var_decl) = TREE_STATIC (decl); - TREE_USED (var_decl) = TREE_USED (decl); + /* Mark the variable as used in order to avoid warnings about + unused variables. */ + TREE_USED (var_decl) = 1; if (s->sym->attr.use_assoc) DECL_IGNORED_P (var_decl) = 1; if (s->sym->attr.target) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 556e676..e6c002f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-01-04 Thomas Koenig <tkoenig@gcc.gnu.org> + + PR fortran/49693 + * gfortran.dg/common_17.f90: New test. + 2012-01-04 Richard Guenther <rguenther@suse.de> PR tree-optimization/49651 diff --git a/gcc/testsuite/gfortran.dg/common_17.f90 b/gcc/testsuite/gfortran.dg/common_17.f90 new file mode 100644 index 0000000..8ac21e7 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/common_17.f90 @@ -0,0 +1,11 @@ +! { dg-do compile } +! { dg-options "-Wall" } +! PR fortran/49693 - this used to cause a spurious warning for the +! variable in the common block. +! Test case by Stephan Kramer. +module foo + implicit none + integer:: a, b + common a +end module foo +! { dg-final { cleanup-modules "foo" } } |