From 91b6eb1140eda6bab324821ee3785e5d0ca155b8 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 2 Jun 2017 11:59:28 +0200 Subject: Add internal facility for dynamic array handling This is intended as a type-safe alternative to obstacks and hand-written realloc constructs. The implementation avoids writing function pointers to the heap. --- malloc/dynarray_at_failure.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 malloc/dynarray_at_failure.c (limited to 'malloc/dynarray_at_failure.c') diff --git a/malloc/dynarray_at_failure.c b/malloc/dynarray_at_failure.c new file mode 100644 index 0000000000..fcc06f030b --- /dev/null +++ b/malloc/dynarray_at_failure.c @@ -0,0 +1,31 @@ +/* Report an dynamic array index out of bounds condition. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include + +void +__libc_dynarray_at_failure (size_t size, size_t index) +{ + char buf[200]; + __snprintf (buf, sizeof (buf), "Fatal glibc error: " + "array index %zu not less than array length %zu\n", + index, size); + __libc_fatal (buf); +} +libc_hidden_def (__libc_dynarray_at_failure) -- cgit v1.2.3