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From-SVN: r1005
This commit is contained in:
Richard Stallman 1992-05-17 22:13:51 +00:00
parent 98f21a70bf
commit 26b3c423d5
1 changed files with 15 additions and 1 deletions
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16
gcc/c-typeck.c
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@ -782,6 +782,17 @@ c_alignof (type)
return size_int (TYPE_ALIGN (type) / BITS_PER_UNIT);
}
/* Print a warning if a constant expression had overflow in folding.
This doesn't really work--it is waiting for changes in fold. */
void
constant_expression_warning (value)
tree value;
{
if (TREE_CODE (value) == NON_LVALUE_EXPR && TREE_CONSTANT_OVERFLOW (value))
pedwarn ("overflow in constant expression");
}
/* Implement the __alignof keyword: Return the minimum required
alignment of EXPR, measured in bytes. For VAR_DECL's and
@ -3013,7 +3024,7 @@ build_unary_op (code, xarg, noconvert)
return error_mark_node;
/* Report a read-only lvalue. */
if (TYPE_READONLY (TREE_TYPE (arg)))
if (TREE_READONLY (arg))
readonly_warning (arg,
((code == PREINCREMENT_EXPR
|| code == POSTINCREMENT_EXPR)
@ -4203,6 +4214,9 @@ store_init_value (decl, init)
}
#endif
/* ANSI wants warnings about out-of-range constant initializers. */
constant_expression_warning (value);
DECL_INITIAL (decl) = value;
}