diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/pointer-query.cc | 11 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr116481.c | 13 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/pointer-query.cc b/gcc/pointer-query.cc index c8ab057..a85c041 100644 --- a/gcc/pointer-query.cc +++ b/gcc/pointer-query.cc @@ -2587,6 +2587,17 @@ array_elt_at_offset (tree artype, HOST_WIDE_INT off, tree build_printable_array_type (tree eltype, unsigned HOST_WIDE_INT nelts) { + /* Cannot build an array type of functions or methods without + an error diagnostic. */ + if (FUNC_OR_METHOD_TYPE_P (eltype)) + { + tree arrtype = make_node (ARRAY_TYPE); + TREE_TYPE (arrtype) = eltype; + TYPE_SIZE (arrtype) = bitsize_zero_node; + TYPE_SIZE_UNIT (arrtype) = size_zero_node; + return arrtype; + } + if (TYPE_SIZE_UNIT (eltype) && TREE_CODE (TYPE_SIZE_UNIT (eltype)) == INTEGER_CST && !integer_zerop (TYPE_SIZE_UNIT (eltype)) diff --git a/gcc/testsuite/gcc.dg/pr116481.c b/gcc/testsuite/gcc.dg/pr116481.c new file mode 100644 index 0000000..3ee6d74 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr116481.c @@ -0,0 +1,13 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -Warray-bounds" } */ + +extern void tramp (); + +int is_trampoline (void* function) /* { dg-bogus "arrays of functions are not meaningful" } */ +{ + void* tramp_address = tramp; + if (!(((unsigned long)function & 3) == 2)) + return 0; + return (((long *) ((char*)function - 2))[0] + == ((long *) ((char*)tramp_address-2))[0]); /* { dg-warning "outside array bounds" } */ +} |