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| author | Paul Thomas <pault@gcc.gnu.org> | 2006-10-16 22:29:46 +0000 |
|---|---|---|
| committer | Paul Thomas <pault@gcc.gnu.org> | 2006-10-16 22:29:46 +0000 |
| commit | 5b440a1cf426fa8dc01ebc5453015c09a69e7480 (patch) | |
| tree | 36463b2afe69cf810cf47a28df21f64d27c408bc /gcc/fortran/trans-array.c | |
| parent | f2523ab3c482c8cd066d5760b32eb843829300fa (diff) | |
| download | gcc-5b440a1cf426fa8dc01ebc5453015c09a69e7480.zip gcc-5b440a1cf426fa8dc01ebc5453015c09a69e7480.tar.gz gcc-5b440a1cf426fa8dc01ebc5453015c09a69e7480.tar.bz2 | |
[multiple changes]
2006-10-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/20541
* trans-array.c (gfc_trans_array_bounds): Test for and set
negative stride of a non-constant bound array to zero.
PR fortran/29392
* data.c (create_character_intializer): Copy and simplify
the expressions for the start and end of a sub-string
reference.
2006-10-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/29392
* gfortran.dg/data_char_3.f90: New test.
PR fortran/20541
* gfortran.dg/negative_automatic_size.f90: New test.
From-SVN: r117797
Diffstat (limited to 'gcc/fortran/trans-array.c')
| -rw-r--r-- | gcc/fortran/trans-array.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c index ba07f02..6fd93dd 100644 --- a/gcc/fortran/trans-array.c +++ b/gcc/fortran/trans-array.c @@ -3540,6 +3540,14 @@ gfc_trans_array_bounds (tree type, gfc_symbol * sym, tree * poffset, gfc_add_modify_expr (pblock, stride, tmp); else stride = gfc_evaluate_now (tmp, pblock); + + /* Make sure that negative size arrays are translated + to being zero size. */ + tmp = build2 (GE_EXPR, boolean_type_node, + stride, gfc_index_zero_node); + tmp = build3 (COND_EXPR, gfc_array_index_type, tmp, + stride, gfc_index_zero_node); + gfc_add_modify_expr (pblock, stride, tmp); } size = stride; |