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(convert_for_assignment): Warn about constant integer

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overflow even if no conversion is involved.

From-SVN: r2075
This commit is contained in:
Richard Stallman 1992-09-07 21:22:56 +00:00
parent 850cba2976
commit 2a23183eba
1 changed files with 7 additions and 5 deletions
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12
gcc/fold-const.c
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@ -3238,11 +3238,13 @@ fold (expr)
if (! TREE_UNSIGNED (type)
&& TREE_INT_CST_HIGH (arg0) < 0)
{
if (TREE_INT_CST_LOW (arg0) == 0)
t = build_int_2 (0, - TREE_INT_CST_HIGH (arg0));
else
t = build_int_2 (- TREE_INT_CST_LOW (arg0),
~ TREE_INT_CST_HIGH (arg0));
HOST_WIDE_INT low, high;
int overflow = neg_double (TREE_INT_CST_LOW (arg0),
TREE_INT_CST_HIGH (arg0),
&low, &high);
t = build_int_2 (low, high);
TREE_TYPE (t) = type;
force_fit_type (t, overflow);
}
}
else if (TREE_CODE (arg0) == REAL_CST)