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| author | Richard Stallman <rms@gnu.org> | 1992-09-07 21:22:56 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-09-07 21:22:56 +0000 |
| commit | 2a23183eba75e1b418b8a7ee83d1d1cf79aee9f7 (patch) | |
| tree | 2e3a8bd00cbd729621654efbe4d5d02ed4ee2096 /gcc | |
| parent | 850cba2976f2d33587954adae6590006289be618 (diff) | |
| download | gcc-2a23183eba75e1b418b8a7ee83d1d1cf79aee9f7.tar.gz | |
(convert_for_assignment): Warn about constant integer
overflow even if no conversion is involved.
From-SVN: r2075
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/fold-const.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 6877b2c108b..126aac45677 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -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) |