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[analyzer][StdLibraryFunctionsChecker] Add POSIX pthread handling functions 

Differential Revision: https://reviews.llvm.org/D84415
This commit is contained in:
Gabor Marton 2020-07-23 16:57:16 +02:00
parent 2e1827271c
commit d01280587d
2 changed files with 137 additions and 0 deletions
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95
clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
View File

@ -951,6 +951,8 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
const QualType ConstWchar_tPtrTy =
getPointerTy(getConstTy(WCharTy)); // const wchar_t *
const QualType ConstVoidPtrRestrictTy = getRestrictTy(ConstVoidPtrTy);
const QualType SizePtrTy = getPointerTy(SizeTy);
const QualType SizePtrRestrictTy = getRestrictTy(SizePtrTy);
const RangeInt IntMax = BVF.getMaxValue(IntTy).getLimitedValue();
const RangeInt UnsignedIntMax =
@ -2182,6 +2184,99 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Summary(ArgTypes{IntTy, StructItimervalPtrTy},
RetType{IntTy}, NoEvalCall)
.ArgConstraint(NotNull(ArgNo(1))));
Optional<QualType> Pthread_cond_tTy = lookupTy("pthread_cond_t");
Optional<QualType> Pthread_cond_tPtrTy = getPointerTy(Pthread_cond_tTy);
Optional<QualType> Pthread_tTy = lookupTy("pthread_t");
Optional<QualType> Pthread_tPtrTy = getPointerTy(Pthread_tTy);
Optional<QualType> Pthread_tPtrRestrictTy = getRestrictTy(Pthread_tPtrTy);
Optional<QualType> Pthread_mutex_tTy = lookupTy("pthread_mutex_t");
Optional<QualType> Pthread_mutex_tPtrTy = getPointerTy(Pthread_mutex_tTy);
Optional<QualType> Pthread_mutex_tPtrRestrictTy =
getRestrictTy(Pthread_mutex_tPtrTy);
Optional<QualType> Pthread_attr_tTy = lookupTy("pthread_attr_t");
Optional<QualType> Pthread_attr_tPtrTy = getPointerTy(Pthread_attr_tTy);
Optional<QualType> ConstPthread_attr_tPtrTy =
getPointerTy(getConstTy(Pthread_attr_tTy));
Optional<QualType> ConstPthread_attr_tPtrRestrictTy =
getRestrictTy(ConstPthread_attr_tPtrTy);
Optional<QualType> Pthread_mutexattr_tTy = lookupTy("pthread_mutexattr_t");
Optional<QualType> ConstPthread_mutexattr_tPtrTy =
getPointerTy(getConstTy(Pthread_mutexattr_tTy));
Optional<QualType> ConstPthread_mutexattr_tPtrRestrictTy =
getRestrictTy(ConstPthread_mutexattr_tPtrTy);
QualType PthreadStartRoutineTy = getPointerTy(
ACtx.getFunctionType(/*ResultTy=*/VoidPtrTy, /*Args=*/VoidPtrTy,
FunctionProtoType::ExtProtoInfo()));
// int pthread_cond_signal(pthread_cond_t *cond);
// int pthread_cond_broadcast(pthread_cond_t *cond);
addToFunctionSummaryMap(
{"pthread_cond_signal", "pthread_cond_broadcast"},
Signature(ArgTypes{Pthread_cond_tPtrTy}, RetType{IntTy}),
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
// int pthread_create(pthread_t *restrict thread,
// const pthread_attr_t *restrict attr,
// void *(*start_routine)(void*), void *restrict arg);
addToFunctionSummaryMap(
"pthread_create",
Signature(ArgTypes{Pthread_tPtrRestrictTy,
ConstPthread_attr_tPtrRestrictTy,
PthreadStartRoutineTy, VoidPtrRestrictTy},
RetType{IntTy}),
Summary(NoEvalCall)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(2))));
// int pthread_attr_destroy(pthread_attr_t *attr);
// int pthread_attr_init(pthread_attr_t *attr);
addToFunctionSummaryMap(
{"pthread_attr_destroy", "pthread_attr_init"},
Signature(ArgTypes{Pthread_attr_tPtrTy}, RetType{IntTy}),
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
// int pthread_attr_getstacksize(const pthread_attr_t *restrict attr,
// size_t *restrict stacksize);
// int pthread_attr_getguardsize(const pthread_attr_t *restrict attr,
// size_t *restrict guardsize);
addToFunctionSummaryMap(
{"pthread_attr_getstacksize", "pthread_attr_getguardsize"},
Signature(ArgTypes{ConstPthread_attr_tPtrRestrictTy, SizePtrRestrictTy},
RetType{IntTy}),
Summary(NoEvalCall)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(1))));
// int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
// int pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize);
addToFunctionSummaryMap(
{"pthread_attr_setstacksize", "pthread_attr_setguardsize"},
Signature(ArgTypes{Pthread_attr_tPtrTy, SizeTy}, RetType{IntTy}),
Summary(NoEvalCall)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(
ArgumentCondition(1, WithinRange, Range(0, SizeMax))));
// int pthread_mutex_init(pthread_mutex_t *restrict mutex, const
// pthread_mutexattr_t *restrict attr);
addToFunctionSummaryMap(
"pthread_mutex_init",
Signature(ArgTypes{Pthread_mutex_tPtrRestrictTy,
ConstPthread_mutexattr_tPtrRestrictTy},
RetType{IntTy}),
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
// int pthread_mutex_destroy(pthread_mutex_t *mutex);
// int pthread_mutex_lock(pthread_mutex_t *mutex);
// int pthread_mutex_trylock(pthread_mutex_t *mutex);
// int pthread_mutex_unlock(pthread_mutex_t *mutex);
addToFunctionSummaryMap(
{"pthread_mutex_destroy", "pthread_mutex_lock", "pthread_mutex_trylock",
"pthread_mutex_unlock"},
Signature(ArgTypes{Pthread_mutex_tPtrTy}, RetType{IntTy}),
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
}
// Functions for testing.

42
clang/test/Analysis/std-c-library-functions-POSIX.c
View File

@ -108,6 +108,20 @@
// CHECK: Loaded summary for: struct tm *gmtime(const time_t *tp)
// CHECK: Loaded summary for: int clock_gettime(clockid_t clock_id, struct timespec *tp)
// CHECK: Loaded summary for: int getitimer(int which, struct itimerval *curr_value)
// CHECK: Loaded summary for: int pthread_cond_signal(pthread_cond_t *cond)
// CHECK: Loaded summary for: int pthread_cond_broadcast(pthread_cond_t *cond)
// CHECK: Loaded summary for: int pthread_create(pthread_t *restrict thread, const pthread_attr_t *restrict attr, void *(*start_routine)(void *), void *restrict arg)
// CHECK: Loaded summary for: int pthread_attr_destroy(pthread_attr_t *attr)
// CHECK: Loaded summary for: int pthread_attr_init(pthread_attr_t *attr)
// CHECK: Loaded summary for: int pthread_attr_getstacksize(const pthread_attr_t *restrict attr, size_t *restrict stacksize)
// CHECK: Loaded summary for: int pthread_attr_getguardsize(const pthread_attr_t *restrict attr, size_t *restrict guardsize)
// CHECK: Loaded summary for: int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
// CHECK: Loaded summary for: int pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize)
// CHECK: Loaded summary for: int pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict attr)
// CHECK: Loaded summary for: int pthread_mutex_destroy(pthread_mutex_t *mutex)
// CHECK: Loaded summary for: int pthread_mutex_lock(pthread_mutex_t *mutex)
// CHECK: Loaded summary for: int pthread_mutex_trylock(pthread_mutex_t *mutex)
// CHECK: Loaded summary for: int pthread_mutex_unlock(pthread_mutex_t *mutex)
long a64l(const char *str64);
char *l64a(long value);
@ -259,6 +273,34 @@ int clock_gettime(clockid_t clock_id, struct timespec *tp);
struct itimerval;
int getitimer(int which, struct itimerval *curr_value);
typedef union {
int x;
} pthread_cond_t;
int pthread_cond_signal(pthread_cond_t *cond);
int pthread_cond_broadcast(pthread_cond_t *cond);
typedef union {
int x;
} pthread_attr_t;
typedef unsigned long int pthread_t;
int pthread_create(pthread_t *restrict thread, const pthread_attr_t *restrict attr, void *(*start_routine)(void *), void *restrict arg);
int pthread_attr_destroy(pthread_attr_t *attr);
int pthread_attr_init(pthread_attr_t *attr);
int pthread_attr_getstacksize(const pthread_attr_t *restrict attr, size_t *restrict stacksize);
int pthread_attr_getguardsize(const pthread_attr_t *restrict attr, size_t *restrict guardsize);
int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
int pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize);
typedef union {
int x;
} pthread_mutex_t;
typedef union {
int x;
} pthread_mutexattr_t;
int pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict attr);
int pthread_mutex_destroy(pthread_mutex_t *mutex);
int pthread_mutex_lock(pthread_mutex_t *mutex);
int pthread_mutex_trylock(pthread_mutex_t *mutex);
int pthread_mutex_unlock(pthread_mutex_t *mutex);
// Must have at least one call expression to initialize the summary map.
int bar(void);
void foo() {