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| author | Nathan Sidwell <nathan@gcc.gnu.org> | 2016-12-09 12:18:36 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2016-12-09 12:18:36 +0000 |
| commit | 32913637718983cf04b8225ee778d5e96ae71d7c (patch) | |
| tree | 2e55f013560430187cd9f24a7fddc5304d96720f /gcc/convert.c | |
| parent | 345bd7ebbb38f0e1d5acf33ab3f680111cfa7871 (diff) | |
re PR c++/78550 (bit field and std::initializer_list)
PR c++/78550
* convert.c (convert_to_integer_1): Maybe fold conversions to
integral types with fewer bits than its mode.
testsuite/
PR c++/78550
* g++.dg/cpp1y/pr78550.C: New.
From-SVN: r243479
Diffstat (limited to 'gcc/convert.c')
| -rw-r--r-- | gcc/convert.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/convert.c b/gcc/convert.c index 8f18ee4d247..54b0a5d8327 100644 --- a/gcc/convert.c +++ b/gcc/convert.c @@ -646,10 +646,11 @@ convert_to_integer_1 (tree type, tree expr, bool dofold) to TYPE. */ else if (TREE_CODE (type) == ENUMERAL_TYPE || outprec != GET_MODE_PRECISION (TYPE_MODE (type))) - return build1 (NOP_EXPR, type, - convert (lang_hooks.types.type_for_mode - (TYPE_MODE (type), TYPE_UNSIGNED (type)), - expr)); + { + expr = convert (lang_hooks.types.type_for_mode + (TYPE_MODE (type), TYPE_UNSIGNED (type)), expr); + return maybe_fold_build1_loc (dofold, loc, NOP_EXPR, type, expr); + } /* Here detect when we can distribute the truncation down past some arithmetic. For example, if adding two longs and converting to an |