diff options
| -rw-r--r-- | gcc/builtins.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr100576.c | 12 |
2 files changed, 14 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index e1b2848..6a2875e 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -4904,6 +4904,8 @@ check_read_access (tree exp, tree src, tree bound /* = NULL_TREE */, if (!warn_stringop_overread) return true; + if (bound && !useless_type_conversion_p (size_type_node, TREE_TYPE (bound))) + bound = fold_convert (size_type_node, bound); access_data data (exp, access_read_only, NULL_TREE, false, bound, true); compute_objsize (src, ost, &data.src); return check_access (exp, /*dstwrite=*/ NULL_TREE, /*maxread=*/ bound, diff --git a/gcc/testsuite/gcc.c-torture/compile/pr100576.c b/gcc/testsuite/gcc.c-torture/compile/pr100576.c new file mode 100644 index 0000000..f2f40ec --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr100576.c @@ -0,0 +1,12 @@ +/* PR middle-end/100576 */ + +const char v[] = {0x12}; + +void +foo (const char *p) +{ + int b = sizeof v; + int n = memcmp (p, v, b); + if (n) + __builtin_abort (); +} |