Commit 275ea0ff authored by Austin Seipp's avatar Austin Seipp
Browse files

rts: Add an initial Coverity model


Signed-off-by: default avatarAustin Seipp <austin@well-typed.com>
parent 91cc88b3
/* Coverity Scan model
* This is a modeling file for Coverity Scan. Modeling helps to avoid false
* positives.
*
* - 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
* http://scan.coverity.com/projects/1919
*/
#define NULL ((void*)0)
#define assert(x) if (!(x)) __coverity_panic__();
/* type decls */
typedef struct {} va_list;
/* glibc functions */
void *malloc (size_t);
void *calloc (size_t, size_t);
void *realloc (void *, size_t);
void free (void *);
/* rts allocation functions */
void* stgMallocBytes(int n, char *msg)
{
void *mem;
__coverity_negative_sink__((size_t)n);
mem = malloc((size_t)n);
assert(mem != NULL);
return mem;
}
void* stgReallocBytes(void *p, int n, char *msg)
{
void *mem;
__coverity_negative_sink__((size_t)n);
/* man 3 realloc: if p == NULL, then realloc is equivalent to malloc() */
if (p == NULL) {
mem = malloc((size_t)n);
assert(mem != NULL);
return mem;
}
/* man 3 realloc: if n == 0, then realloc is equivalent to free() */
if (n == 0) {
free(p);
return NULL;
} else {
mem = realloc(p, (size_t)n);
assert(mem != NULL);
return mem;
}
}
void* stgCallocBytes(int n, int m, char *msg)
{
void *mem;
__coverity_negative_sink__((size_t)n);
__coverity_negative_sink__((size_t)m);
mem = calloc(n, m);
assert(mem != NULL);
return mem;
}
void stgFree(void* p)
{
free(p);
}
/* Kill paths */
void stg_exit(int n)
{
__coverity_panic__();
}
void shutdownThread(void)
{
__coverity_panic__();
}
void shutdownHaskellAndExit(int exitCode, int fastExit)
{
__coverity_panic__();
}
void shutdownHaskellAndSignal(int sig, int fastExit)
{
__coverity_panic__();
}
void _assertFail(const char *filename, unsigned int linenum)
{
__coverity_panic__();
}
void barf(const char *s, ...)
{
__coverity_panic__();
}
void vbarf(const char *s, va_list ap)
{
__coverity_panic__();
}
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