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