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Add compiler warnings for more constant out of bounds array accesses.

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This patch adds compiler warning messages for all/most constant out
of bounds array access.
This commit is contained in:
Cary R
2009-07-03 19:43:00 -07:00
committed by Stephen Williams
parent 067fcc07a1
commit c9f6bd68b9
3 changed files with 27 additions and 18 deletions
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elab_net.cc
+13 -2
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@@ -423,7 +423,7 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
// Default part select is the entire word.
unsigned midx = sig->vector_width()-1, lidx = 0;
// The default word select is the first.
unsigned widx = 0;
long widx = 0;
const name_component_t&name_tail = path_.back();
@@ -445,6 +445,12 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
}
ivl_assert(*this, index_head.sel == index_component_t::SEL_BIT);
// These are not used, but they need to have a default value.
ivl_variable_type_t expr_type_tmp = IVL_VT_NO_TYPE;
bool unsized_flag_tmp = false;
index_head.msb->test_width(des, scope,
integer_width, integer_width,
expr_type_tmp, unsized_flag_tmp);
need_constant_expr = true;
NetExpr*tmp_ex = elab_and_eval(des, scope, index_head.msb, -1);
need_constant_expr = false;
@@ -520,7 +526,12 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
unsigned subnet_wid = midx-lidx+1;
if (sig->pin_count() > 1) {
assert(widx < sig->pin_count());
if (widx < 0 || widx >= (long) sig->pin_count()) {
cerr << get_fileline() << ": warning: ignoring out of "
"bounds l-value array access "
<< sig->name() << "[" << widx << "]." << endl;
return 0;
}
NetNet*tmp = new NetNet(scope, scope->local_symbol(),
sig->type(), sig->vector_width());