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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2000-10-20 17:51:52 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2000-10-20 13:51:52 -0400 |
| commit | 444751385724c1ed44e29047bfd96bcdba91f522 (patch) | |
| tree | 0179fd011caa1eb6eecaae68b203054a3ee3c1c4 /gcc/cp/typeck.c | |
| parent | 23ccfa6dbb713011bc4445e74c5b243673f86620 (diff) | |
| download | gcc-444751385724c1ed44e29047bfd96bcdba91f522.zip gcc-444751385724c1ed44e29047bfd96bcdba91f522.tar.gz gcc-444751385724c1ed44e29047bfd96bcdba91f522.tar.bz2 | |
fold-const.c (force_fit_type): Unsigned values can overflow if they are sizetype.
* fold-const.c (force_fit_type): Unsigned values can overflow
if they are sizetype.
(int_const_binop): Don't use cache if overflows.
* cp/typeck.c (dubious_conversion_warning): Suppress if
TYPE_IS_SIZETYPE.
From-SVN: r36970
Diffstat (limited to 'gcc/cp/typeck.c')
| -rw-r--r-- | gcc/cp/typeck.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c index c265808..d72d8e6 100644 --- a/gcc/cp/typeck.c +++ b/gcc/cp/typeck.c @@ -6353,7 +6353,16 @@ dubious_conversion_warnings (type, expr, errtype, fndecl, parmnum) cp_warning ("%s of negative value `%E' to `%T'", errtype, expr, type); } - overflow_warning (expr); + + /* Suppress warning for a sizetype since we never used to issue it. + ??? This needs to be looked at more carefully someday. */ + if (TREE_CODE (expr) == INTEGER_CST + && TREE_CODE (TREE_TYPE (expr)) == INTEGER_TYPE + && TYPE_IS_SIZETYPE (TREE_TYPE (expr))) + TREE_OVERFLOW (expr) = TREE_CONSTANT_OVERFLOW (expr) = 0; + else + overflow_warning (expr); + if (TREE_CONSTANT (expr)) expr = fold (expr); } |