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30a4d95bf7
We ICE in handle_assume_aligned_attribute since r271338 which added
@@ -2935,8 +2936,8 @@ handle_assume_aligned_attribute (tree *node, tree name, tree args, int,
/* The misalignment specified by the second argument
must be non-negative and less than the alignment. */
warning (OPT_Wattributes,
- "%qE attribute argument %E is not in the range [0, %E)",
- name, val, align);
+ "%qE attribute argument %E is not in the range [0, %wu]",
+ name, val, tree_to_uhwi (align) - 1);
*no_add_attrs = true;
return NULL_TREE;
}
because align is INT_MIN and tree_to_uhwi asserts tree_fits_uhwi_p -- which
ALIGN does not and the prior tree_fits_shwi_p check is fine with it, as
well as the integer_pow2p check.
Since neither of the arguments to assume_aligned can be negative, I've
hoisted the tree_int_cst_sgn check. And add the missing "argument"
word to an existing warning.
gcc/c-family/ChangeLog:
PR c++/99062
* c-attribs.c (handle_assume_aligned_attribute): Check that the
alignment argument is non-negative. Tweak a warning message.
gcc/testsuite/ChangeLog:
PR c++/99062
* gcc.dg/attr-assume_aligned-4.c: Adjust dg-warning.
* g++.dg/ext/attr-assume-aligned.C: New test.
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