/* Coverity Scan model * * Copyright (C) 2014 Red Hat, Inc. * * Authors: * Markus Armbruster <armbru@redhat.com> * Paolo Bonzini <pbonzini@redhat.com> * * This work is licensed under the terms of the GNU GPL, version 2 or, at your * option, any later version. See the COPYING file in the top-level directory. */ /* * This is the source code for our Coverity user model file. The * purpose of user models is to increase scanning accuracy by explaining * code Coverity can't see (out of tree libraries) or doesn't * sufficiently understand. Better accuracy means both fewer false * positives and more true defects. Memory leaks in particular. * * - A model file can't import any header files. Some built-in primitives are * available but not wchar_t, NULL etc. * - Modeling doesn't need full structs and typedefs. Rudimentary structs * and similar types are sufficient. * - An uninitialized local variable signifies that the variable could be * any value. * * The model file must be uploaded by an admin in the analysis settings of * https://scan.coverity.com/projects/54 * * above text is based on https://github.com/qemu/qemu/blob/master/scripts/coverity-model.c */ #define NULL (void *)0 // Based on https://scan.coverity.com/models void *av_malloc(size_t size) { int has_memory; __coverity_negative_sink__(size); if (has_memory) { void *ptr = __coverity_alloc__(size); __coverity_mark_as_uninitialized_buffer__(ptr); __coverity_mark_as_afm_allocated__(ptr, "av_free"); return ptr; } else { return 0; } } void *av_mallocz(size_t size) { int has_memory; __coverity_negative_sink__(size); if (has_memory) { void *ptr = __coverity_alloc__(size); __coverity_writeall0__(ptr); __coverity_mark_as_afm_allocated__(ptr, "av_free"); return ptr; } else { return 0; } } void *av_realloc(void *ptr, size_t size) { int has_memory; __coverity_negative_sink__(size); if (has_memory) { __coverity_escape__(ptr); ptr = __coverity_alloc__(size); __coverity_writeall__(ptr); __coverity_mark_as_afm_allocated__(ptr, "av_free"); return ptr; } else { return 0; } } void *av_free(void *ptr) { __coverity_free__(ptr); __coverity_mark_as_afm_freed__(ptr, "av_free"); }