[llvm-branch-commits] [clang] febe750 - [analyzer][StdLibraryFunctionsChecker] Add more return value contraints
Gabor Marton via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Tue Dec 8 08:10:39 PST 2020
Author: Gabor Marton
Date: 2020-12-08T17:04:29+01:00
New Revision: febe75032f6f8322cce1dcbba11a44559aaa14e3
URL: https://github.com/llvm/llvm-project/commit/febe75032f6f8322cce1dcbba11a44559aaa14e3
DIFF: https://github.com/llvm/llvm-project/commit/febe75032f6f8322cce1dcbba11a44559aaa14e3.diff
LOG: [analyzer][StdLibraryFunctionsChecker] Add more return value contraints
This time, we add contraints to functions that either return with [0, -1] or
with a file descriptor.
Differential Revision: https://reviews.llvm.org/D92771
Added:
Modified:
clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
Removed:
################################################################################
diff --git a/clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
index de825b2fee11..f0710a658148 100644
--- a/clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
@@ -1322,21 +1322,31 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
.ArgConstraint(ArgumentCondition(
0, WithinRange, Range(0, LongMax))));
+ const auto ReturnsZeroOrMinusOne =
+ ConstraintSet{ReturnValueCondition(WithinRange, Range(-1, 0))};
+ const auto ReturnsFileDescriptor =
+ ConstraintSet{ReturnValueCondition(WithinRange, Range(-1, IntMax))};
+
// int access(const char *pathname, int amode);
addToFunctionSummaryMap(
"access", Signature(ArgTypes{ConstCharPtrTy, IntTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int faccessat(int dirfd, const char *pathname, int mode, int flags);
addToFunctionSummaryMap(
"faccessat",
Signature(ArgTypes{IntTy, ConstCharPtrTy, IntTy, IntTy},
RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
// int dup(int fildes);
addToFunctionSummaryMap("dup", Signature(ArgTypes{IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
.ArgConstraint(ArgumentCondition(
0, WithinRange, Range(0, IntMax))));
@@ -1344,6 +1354,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"dup2", Signature(ArgTypes{IntTy, IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(
ArgumentCondition(1, WithinRange, Range(0, IntMax))));
@@ -1352,6 +1363,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap("fdatasync",
Signature(ArgTypes{IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(
0, WithinRange, Range(0, IntMax))));
@@ -1367,6 +1379,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
// int fsync(int fildes);
addToFunctionSummaryMap("fsync", Signature(ArgTypes{IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(
0, WithinRange, Range(0, IntMax))));
@@ -1376,13 +1389,16 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"truncate",
Signature(ArgTypes{ConstCharPtrTy, Off_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int symlink(const char *oldpath, const char *newpath);
addToFunctionSummaryMap(
"symlink",
Signature(ArgTypes{ConstCharPtrTy, ConstCharPtrTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1392,6 +1408,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{ConstCharPtrTy, IntTy, ConstCharPtrTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(ArgumentCondition(1, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(2))));
@@ -1400,6 +1417,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"lockf", Signature(ArgTypes{IntTy, IntTy, Off_tTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(
ArgumentCondition(0, WithinRange, Range(0, IntMax))));
@@ -1408,7 +1426,9 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
// int creat(const char *pathname, mode_t mode);
addToFunctionSummaryMap(
"creat", Signature(ArgTypes{ConstCharPtrTy, Mode_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
+ .ArgConstraint(NotNull(ArgNo(0))));
// unsigned int sleep(unsigned int seconds);
addToFunctionSummaryMap(
@@ -1421,9 +1441,11 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Optional<QualType> DirPtrTy = getPointerTy(DirTy);
// int dirfd(DIR *dirp);
- addToFunctionSummaryMap(
- "dirfd", Signature(ArgTypes{DirPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("dirfd",
+ Signature(ArgTypes{DirPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
+ .ArgConstraint(NotNull(ArgNo(0))));
// unsigned int alarm(unsigned int seconds);
addToFunctionSummaryMap(
@@ -1433,9 +1455,11 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
ArgumentCondition(0, WithinRange, Range(0, UnsignedIntMax))));
// int closedir(DIR *dir);
- addToFunctionSummaryMap(
- "closedir", Signature(ArgTypes{DirPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("closedir",
+ Signature(ArgTypes{DirPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// char *strdup(const char *s);
addToFunctionSummaryMap(
@@ -1457,9 +1481,11 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
// int mkstemp(char *template);
- addToFunctionSummaryMap(
- "mkstemp", Signature(ArgTypes{CharPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("mkstemp",
+ Signature(ArgTypes{CharPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
+ .ArgConstraint(NotNull(ArgNo(0))));
// char *mkdtemp(char *template);
addToFunctionSummaryMap(
@@ -1476,13 +1502,17 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
// int mkdir(const char *pathname, mode_t mode);
addToFunctionSummaryMap(
"mkdir", Signature(ArgTypes{ConstCharPtrTy, Mode_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int mkdirat(int dirfd, const char *pathname, mode_t mode);
addToFunctionSummaryMap(
"mkdirat",
Signature(ArgTypes{IntTy, ConstCharPtrTy, Mode_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
Optional<QualType> Dev_tTy = lookupTy("dev_t");
@@ -1490,19 +1520,25 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"mknod",
Signature(ArgTypes{ConstCharPtrTy, Mode_tTy, Dev_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int mknodat(int dirfd, const char *pathname, mode_t mode, dev_t dev);
addToFunctionSummaryMap(
"mknodat",
Signature(ArgTypes{IntTy, ConstCharPtrTy, Mode_tTy, Dev_tTy},
RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
// int chmod(const char *path, mode_t mode);
addToFunctionSummaryMap(
"chmod", Signature(ArgTypes{ConstCharPtrTy, Mode_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int fchmodat(int dirfd, const char *pathname, mode_t mode, int flags);
addToFunctionSummaryMap(
@@ -1510,6 +1546,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{IntTy, ConstCharPtrTy, Mode_tTy, IntTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1517,6 +1554,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"fchmod", Signature(ArgTypes{IntTy, Mode_tTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(
ArgumentCondition(0, WithinRange, Range(0, IntMax))));
@@ -1530,6 +1568,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{IntTy, ConstCharPtrTy, Uid_tTy, Gid_tTy, IntTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1537,36 +1576,46 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"chown",
Signature(ArgTypes{ConstCharPtrTy, Uid_tTy, Gid_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int lchown(const char *path, uid_t owner, gid_t group);
addToFunctionSummaryMap(
"lchown",
Signature(ArgTypes{ConstCharPtrTy, Uid_tTy, Gid_tTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int fchown(int fildes, uid_t owner, gid_t group);
addToFunctionSummaryMap(
"fchown", Signature(ArgTypes{IntTy, Uid_tTy, Gid_tTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(
ArgumentCondition(0, WithinRange, Range(0, IntMax))));
// int rmdir(const char *pathname);
- addToFunctionSummaryMap(
- "rmdir", Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("rmdir",
+ Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int chdir(const char *path);
- addToFunctionSummaryMap(
- "chdir", Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("chdir",
+ Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int link(const char *oldpath, const char *newpath);
addToFunctionSummaryMap(
"link",
Signature(ArgTypes{ConstCharPtrTy, ConstCharPtrTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1577,21 +1626,25 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{IntTy, ConstCharPtrTy, IntTy, ConstCharPtrTy, IntTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1)))
.ArgConstraint(ArgumentCondition(2, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(3))));
// int unlink(const char *pathname);
- addToFunctionSummaryMap(
- "unlink", Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("unlink",
+ Signature(ArgTypes{ConstCharPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int unlinkat(int fd, const char *path, int flag);
addToFunctionSummaryMap(
"unlinkat",
Signature(ArgTypes{IntTy, ConstCharPtrTy, IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1603,6 +1656,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"fstat", Signature(ArgTypes{IntTy, StructStatPtrTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1612,6 +1666,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{ConstCharPtrRestrictTy, StructStatPtrRestrictTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1621,6 +1676,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{ConstCharPtrRestrictTy, StructStatPtrRestrictTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(0)))
.ArgConstraint(NotNull(ArgNo(1))));
@@ -1632,6 +1688,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
StructStatPtrRestrictTy, IntTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1)))
.ArgConstraint(NotNull(ArgNo(2))));
@@ -1649,11 +1706,12 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
0, WithinRange, Range(0, IntMax))));
// int isatty(int fildes);
- addToFunctionSummaryMap("isatty",
- Signature(ArgTypes{IntTy}, RetType{IntTy}),
- Summary(NoEvalCall)
- .ArgConstraint(ArgumentCondition(
- 0, WithinRange, Range(0, IntMax))));
+ addToFunctionSummaryMap(
+ "isatty", Signature(ArgTypes{IntTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case({ReturnValueCondition(WithinRange, Range(0, 1))})
+ .ArgConstraint(
+ ArgumentCondition(0, WithinRange, Range(0, IntMax))));
// FILE *popen(const char *command, const char *type);
addToFunctionSummaryMap(
@@ -1671,6 +1729,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
// int close(int fildes);
addToFunctionSummaryMap("close", Signature(ArgTypes{IntTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(ArgumentCondition(
0, WithinRange, Range(-1, IntMax))));
@@ -1710,15 +1769,19 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
// int fileno(FILE *stream);
- addToFunctionSummaryMap(
- "fileno", Signature(ArgTypes{FilePtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("fileno",
+ Signature(ArgTypes{FilePtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsFileDescriptor)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int fseeko(FILE *stream, off_t offset, int whence);
addToFunctionSummaryMap(
"fseeko",
Signature(ArgTypes{FilePtrTy, Off_tTy, IntTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// off_t ftello(FILE *stream);
addToFunctionSummaryMap(
@@ -1749,9 +1812,11 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
ArgumentCondition(4, WithinRange, Range(-1, IntMax))));
// int pipe(int fildes[2]);
- addToFunctionSummaryMap(
- "pipe", Signature(ArgTypes{IntPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ addToFunctionSummaryMap("pipe",
+ Signature(ArgTypes{IntPtrTy}, RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// off_t lseek(int fildes, off_t offset, int whence);
addToFunctionSummaryMap(
@@ -1801,6 +1866,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{IntTy, ConstCharPtrTy, IntTy, ConstCharPtrTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(NotNull(ArgNo(1)))
.ArgConstraint(NotNull(ArgNo(3))));
@@ -1818,13 +1884,17 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"execv",
Signature(ArgTypes{ConstCharPtrTy, CharPtrConstPtr}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case({ReturnValueCondition(WithinRange, SingleValue(-1))})
+ .ArgConstraint(NotNull(ArgNo(0))));
// int execvp(const char *file, char *const argv[]);
addToFunctionSummaryMap(
"execvp",
Signature(ArgTypes{ConstCharPtrTy, CharPtrConstPtr}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case({ReturnValueCondition(WithinRange, SingleValue(-1))})
+ .ArgConstraint(NotNull(ArgNo(0))));
// int getopt(int argc, char * const argv[], const char *optstring);
addToFunctionSummaryMap(
@@ -1832,6 +1902,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Signature(ArgTypes{IntTy, CharPtrConstPtr, ConstCharPtrTy},
RetType{IntTy}),
Summary(NoEvalCall)
+ .Case({ReturnValueCondition(WithinRange, Range(-1, UCharRangeMax))})
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)))
.ArgConstraint(NotNull(ArgNo(1)))
.ArgConstraint(NotNull(ArgNo(2))));
@@ -1849,9 +1920,6 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
Optional<QualType> Socklen_tPtrRestrictTy = getRestrictTy(Socklen_tPtrTy);
Optional<RangeInt> Socklen_tMax = getMaxValue(Socklen_tTy);
- const auto ReturnsZeroOrMinusOne =
- ConstraintSet{ReturnValueCondition(WithinRange, Range(-1, 0))};
-
// In 'socket.h' of some libc implementations with C99, sockaddr parameter
// is a transparent union of the underlying sockaddr_ family of pointers
// instead of being a pointer to struct sockaddr. In these cases, the
@@ -1860,7 +1928,7 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
// constraints which require pointer types for the sockaddr param.
auto Accept =
Summary(NoEvalCall)
- .Case({ReturnValueCondition(WithinRange, Range(-1, IntMax))})
+ .Case(ReturnsFileDescriptor)
.ArgConstraint(ArgumentCondition(0, WithinRange, Range(0, IntMax)));
if (!addToFunctionSummaryMap(
"accept",
@@ -2139,7 +2207,9 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"utime",
Signature(ArgTypes{ConstCharPtrTy, StructUtimbufPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
Optional<QualType> StructTimespecTy = lookupTy("timespec");
Optional<QualType> StructTimespecPtrTy = getPointerTy(StructTimespecTy);
@@ -2151,17 +2221,19 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
"futimens",
Signature(ArgTypes{IntTy, ConstStructTimespecPtrTy}, RetType{IntTy}),
Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
.ArgConstraint(
ArgumentCondition(0, WithinRange, Range(0, IntMax))));
// int utimensat(int dirfd, const char *pathname,
// const struct timespec times[2], int flags);
- addToFunctionSummaryMap(
- "utimensat",
- Signature(
- ArgTypes{IntTy, ConstCharPtrTy, ConstStructTimespecPtrTy, IntTy},
- RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ addToFunctionSummaryMap("utimensat",
+ Signature(ArgTypes{IntTy, ConstCharPtrTy,
+ ConstStructTimespecPtrTy, IntTy},
+ RetType{IntTy}),
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
Optional<QualType> StructTimevalTy = lookupTy("timeval");
Optional<QualType> ConstStructTimevalPtrTy =
@@ -2172,14 +2244,18 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
"utimes",
Signature(ArgTypes{ConstCharPtrTy, ConstStructTimevalPtrTy},
RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
// int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
addToFunctionSummaryMap(
"nanosleep",
Signature(ArgTypes{ConstStructTimespecPtrTy, StructTimespecPtrTy},
RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(0))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(0))));
Optional<QualType> Time_tTy = lookupTy("time_t");
Optional<QualType> ConstTime_tPtrTy = getPointerTy(getConstTy(Time_tTy));
@@ -2253,7 +2329,9 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"clock_gettime",
Signature(ArgTypes{Clockid_tTy, StructTimespecPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
Optional<QualType> StructItimervalTy = lookupTy("itimerval");
Optional<QualType> StructItimervalPtrTy = getPointerTy(StructItimervalTy);
@@ -2262,7 +2340,9 @@ void StdLibraryFunctionsChecker::initFunctionSummaries(
addToFunctionSummaryMap(
"getitimer",
Signature(ArgTypes{IntTy, StructItimervalPtrTy}, RetType{IntTy}),
- Summary(NoEvalCall).ArgConstraint(NotNull(ArgNo(1))));
+ Summary(NoEvalCall)
+ .Case(ReturnsZeroOrMinusOne)
+ .ArgConstraint(NotNull(ArgNo(1))));
Optional<QualType> Pthread_cond_tTy = lookupTy("pthread_cond_t");
Optional<QualType> Pthread_cond_tPtrTy = getPointerTy(Pthread_cond_tTy);
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