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| author | Jason Merrill <jason@redhat.com> | 2011-06-09 23:56:08 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2011-06-09 23:56:08 -0400 |
| commit | 793fbf0b4857056c5723a5e2b9fc20c3726726c5 (patch) | |
| tree | cec6f934c5272457884f62365f6a20071d4ea789 /gcc/cp/semantics.c | |
| parent | 377a5364302b126840da543d6acf46b68e59a486 (diff) | |
| download | gcc-793fbf0b4857056c5723a5e2b9fc20c3726726c5.zip gcc-793fbf0b4857056c5723a5e2b9fc20c3726726c5.tar.gz gcc-793fbf0b4857056c5723a5e2b9fc20c3726726c5.tar.bz2 | |
* semantics.c (maybe_constant_value): Handle overflowed input.
From-SVN: r174885
Diffstat (limited to 'gcc/cp/semantics.c')
| -rw-r--r-- | gcc/cp/semantics.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c index bf6486b..481318e 100644 --- a/gcc/cp/semantics.c +++ b/gcc/cp/semantics.c @@ -6902,7 +6902,8 @@ non_const_var_error (tree r) else if (CP_TYPE_VOLATILE_P (type)) inform (DECL_SOURCE_LOCATION (r), "%q#D is volatile", r); - else if (!DECL_INITIAL (r)) + else if (!DECL_INITIAL (r) + || !TREE_CONSTANT (DECL_INITIAL (r))) inform (DECL_SOURCE_LOCATION (r), "%qD was not initialized with a constant " "expression", r); @@ -7337,7 +7338,14 @@ maybe_constant_value (tree t) || type_unknown_p (t) || !potential_constant_expression (t) || value_dependent_expression_p (t)) - return t; + { + if (TREE_OVERFLOW_P (t)) + { + t = build_nop (TREE_TYPE (t), t); + TREE_CONSTANT (t) = false; + } + return t; + } r = cxx_eval_outermost_constant_expr (t, true); #ifdef ENABLE_CHECKING |