The Fortran front-end has a bug in which it uses "int" values for "size_t"
parameters. I don't know why this isn't problem for all 64-bit architectures,
but GCN ends up with the data in the wrong argument register and/or stack slot,
and bad things happen.
This patch corrects the issue by setting the correct type.
2018-09-05 Kwok Cheung Yeung <[email protected]>
gcc/fortran/
* trans-expr.c (gfc_trans_structure_assign): Ensure that
integer_zero_node is of sizetype when used as the first
argument of a call to _gfortran_caf_register.
* trans-intrinsic.c (conv_intrinsic_event_query): Convert computed
index to a size_t type.
* trans-stmt.c (gfc_trans_event_post_wait): Likewise.
---
gcc/fortran/trans-expr.c | 2 +-
gcc/fortran/trans-intrinsic.c | 3 ++-
gcc/fortran/trans-stmt.c | 3 ++-
3 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c
index 56ce98c..91be3fb 100644
--- a/gcc/fortran/trans-expr.c
+++ b/gcc/fortran/trans-expr.c
@@ -7729,7 +7729,7 @@ gfc_trans_structure_assign (tree dest, gfc_expr * expr, bool init, bool coarray)
suffices to recognize the data as array. */
if (rank < 0)
rank = 1;
- size = integer_zero_node;
+ size = fold_convert (sizetype, integer_zero_node);
desc = field;
gfc_add_modify (&block, gfc_conv_descriptor_rank (desc),
build_int_cst (signed_char_type_node, rank));
diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c
index b2cea93..23c13da 100644
--- a/gcc/fortran/trans-intrinsic.c
+++ b/gcc/fortran/trans-intrinsic.c
@@ -10732,7 +10732,8 @@ conv_intrinsic_event_query (gfc_code *code)
tmp = fold_build2_loc (input_location, MULT_EXPR,
integer_type_node, extent, tmp);
index = fold_build2_loc (input_location, PLUS_EXPR,
- integer_type_node, index, tmp);
+ size_type_node, index,
+ fold_convert (size_type_node, tmp));
if (i < ar->dimen - 1)
{
ubound = gfc_conv_descriptor_ubound_get (desc, gfc_rank_cst[i]);
diff --git a/gcc/fortran/trans-stmt.c b/gcc/fortran/trans-stmt.c
index 795d3cc..2c59675 100644
--- a/gcc/fortran/trans-stmt.c
+++ b/gcc/fortran/trans-stmt.c
@@ -1096,7 +1096,8 @@ gfc_trans_event_post_wait (gfc_code *code, gfc_exec_op op)
tmp = fold_build2_loc (input_location, MULT_EXPR,
integer_type_node, extent, tmp);
index = fold_build2_loc (input_location, PLUS_EXPR,
- integer_type_node, index, tmp);
+ size_type_node, index,
+ fold_convert (size_type_node, tmp));
if (i < ar->dimen - 1)
{
ubound = gfc_conv_descriptor_ubound_get (desc, gfc_rank_cst[i]);
