[FlowSensitive] [StatusOr] [5/N] Support absl::OkStatus et al #163872
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@llvm/pr-subscribers-clang Author: Florian Mayer (fmayer) ChangesThis allows comparison which these status codes Full diff: https://github.com/llvm/llvm-project/pull/163872.diff 3 Files Affected:
diff --git a/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp b/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
index 4ebf3e4251dd6..11dd0e73f7089 100644
--- a/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
+++ b/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
@@ -129,6 +129,24 @@ static auto isComparisonOperatorCall(llvm::StringRef operator_name) {
hasArgument(1, anyOf(hasType(statusType()), hasType(statusOrType()))));
}
+static auto isOkStatusCall() {
+ using namespace ::clang::ast_matchers; // NOLINT: Too many names
+ return callExpr(callee(functionDecl(hasName("::absl::OkStatus"))));
+}
+
+static auto isNotOkStatusCall() {
+ using namespace ::clang::ast_matchers; // NOLINT: Too many names
+ return callExpr(callee(functionDecl(hasAnyName(
+ "::absl::AbortedError", "::absl::AlreadyExistsError",
+ "::absl::CancelledError", "::absl::DataLossError",
+ "::absl::DeadlineExceededError", "::absl::FailedPreconditionError",
+ "::absl::InternalError", "::absl::InvalidArgumentError",
+ "::absl::NotFoundError", "::absl::OutOfRangeError",
+ "::absl::PermissionDeniedError", "::absl::ResourceExhaustedError",
+ "::absl::UnauthenticatedError", "::absl::UnavailableError",
+ "::absl::UnimplementedError", "::absl::UnknownError"))));
+}
+
static auto
buildDiagnoseMatchSwitch(const UncheckedStatusOrAccessModelOptions &Options) {
return CFGMatchSwitchBuilder<const Environment,
@@ -411,6 +429,22 @@ static void transferComparisonOperator(const CXXOperatorCallExpr* Expr,
State.Env.setValue(*Expr, *LhsAndRhsVal);
}
+static void transferOkStatusCall(const CallExpr *Expr,
+ const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
+ auto &OkVal =
+ initializeStatus(State.Env.getResultObjectLocation(*Expr), State.Env);
+ State.Env.assume(OkVal.formula());
+}
+
+static void transferNotOkStatusCall(const CallExpr *Expr,
+ const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
+ auto &OkVal =
+ initializeStatus(State.Env.getResultObjectLocation(*Expr), State.Env);
+ auto &A = State.Env.arena();
+ State.Env.assume(A.makeNot(OkVal.formula()));
+}
CFGMatchSwitch<LatticeTransferState>
buildTransferMatchSwitch(ASTContext &Ctx,
@@ -427,18 +461,20 @@ buildTransferMatchSwitch(ASTContext &Ctx,
transferStatusUpdateCall)
.CaseOfCFGStmt<CXXOperatorCallExpr>(
isComparisonOperatorCall("=="),
- [](const CXXOperatorCallExpr* Expr, const MatchFinder::MatchResult&,
- LatticeTransferState& State) {
+ [](const CXXOperatorCallExpr *Expr, const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
transferComparisonOperator(Expr, State,
/*IsNegative=*/false);
})
.CaseOfCFGStmt<CXXOperatorCallExpr>(
isComparisonOperatorCall("!="),
- [](const CXXOperatorCallExpr* Expr, const MatchFinder::MatchResult&,
- LatticeTransferState& State) {
+ [](const CXXOperatorCallExpr *Expr, const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
transferComparisonOperator(Expr, State,
/*IsNegative=*/true);
})
+ .CaseOfCFGStmt<CallExpr>(isOkStatusCall(), transferOkStatusCall)
+ .CaseOfCFGStmt<CallExpr>(isNotOkStatusCall(), transferNotOkStatusCall)
.Build();
}
diff --git a/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp b/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
index d3dee58651396..461af73ea6c01 100644
--- a/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
+++ b/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
@@ -1356,7 +1356,7 @@ bool operator==(const Status &lhs, const Status &rhs);
bool operator!=(const Status &lhs, const Status &rhs);
Status OkStatus();
-Status InvalidArgumentError(char *);
+Status InvalidArgumentError(const char *);
#endif // STATUS_H
)cc";
diff --git a/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp b/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
index 99f04cc8fe7e7..e7fe378a6973d 100644
--- a/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
+++ b/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
@@ -2710,6 +2710,36 @@ TEST_P(UncheckedStatusOrAccessModelTest, EqualityCheck) {
}
}
)cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() == absl::OkStatus())
+ sor.value();
+ else
+ sor.value(); // [[unsafe]]
+ }
+ )cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() != absl::OkStatus())
+ sor.value(); // [[unsafe]]
+ else
+ sor.value();
+ }
+ )cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() != absl::InvalidArgumentError("oh no"))
+ sor.value(); // [[unsafe]]
+ else
+ sor.value(); // [[unsafe]]
+ }
+ )cc");
ExpectDiagnosticsFor(
R"cc(
#include "unchecked_statusor_access_test_defs.h"
|
|
@llvm/pr-subscribers-clang-analysis Author: Florian Mayer (fmayer) ChangesThis allows comparison which these status codes Full diff: https://github.com/llvm/llvm-project/pull/163872.diff 3 Files Affected:
diff --git a/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp b/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
index 4ebf3e4251dd6..11dd0e73f7089 100644
--- a/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
+++ b/clang/lib/Analysis/FlowSensitive/Models/UncheckedStatusOrAccessModel.cpp
@@ -129,6 +129,24 @@ static auto isComparisonOperatorCall(llvm::StringRef operator_name) {
hasArgument(1, anyOf(hasType(statusType()), hasType(statusOrType()))));
}
+static auto isOkStatusCall() {
+ using namespace ::clang::ast_matchers; // NOLINT: Too many names
+ return callExpr(callee(functionDecl(hasName("::absl::OkStatus"))));
+}
+
+static auto isNotOkStatusCall() {
+ using namespace ::clang::ast_matchers; // NOLINT: Too many names
+ return callExpr(callee(functionDecl(hasAnyName(
+ "::absl::AbortedError", "::absl::AlreadyExistsError",
+ "::absl::CancelledError", "::absl::DataLossError",
+ "::absl::DeadlineExceededError", "::absl::FailedPreconditionError",
+ "::absl::InternalError", "::absl::InvalidArgumentError",
+ "::absl::NotFoundError", "::absl::OutOfRangeError",
+ "::absl::PermissionDeniedError", "::absl::ResourceExhaustedError",
+ "::absl::UnauthenticatedError", "::absl::UnavailableError",
+ "::absl::UnimplementedError", "::absl::UnknownError"))));
+}
+
static auto
buildDiagnoseMatchSwitch(const UncheckedStatusOrAccessModelOptions &Options) {
return CFGMatchSwitchBuilder<const Environment,
@@ -411,6 +429,22 @@ static void transferComparisonOperator(const CXXOperatorCallExpr* Expr,
State.Env.setValue(*Expr, *LhsAndRhsVal);
}
+static void transferOkStatusCall(const CallExpr *Expr,
+ const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
+ auto &OkVal =
+ initializeStatus(State.Env.getResultObjectLocation(*Expr), State.Env);
+ State.Env.assume(OkVal.formula());
+}
+
+static void transferNotOkStatusCall(const CallExpr *Expr,
+ const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
+ auto &OkVal =
+ initializeStatus(State.Env.getResultObjectLocation(*Expr), State.Env);
+ auto &A = State.Env.arena();
+ State.Env.assume(A.makeNot(OkVal.formula()));
+}
CFGMatchSwitch<LatticeTransferState>
buildTransferMatchSwitch(ASTContext &Ctx,
@@ -427,18 +461,20 @@ buildTransferMatchSwitch(ASTContext &Ctx,
transferStatusUpdateCall)
.CaseOfCFGStmt<CXXOperatorCallExpr>(
isComparisonOperatorCall("=="),
- [](const CXXOperatorCallExpr* Expr, const MatchFinder::MatchResult&,
- LatticeTransferState& State) {
+ [](const CXXOperatorCallExpr *Expr, const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
transferComparisonOperator(Expr, State,
/*IsNegative=*/false);
})
.CaseOfCFGStmt<CXXOperatorCallExpr>(
isComparisonOperatorCall("!="),
- [](const CXXOperatorCallExpr* Expr, const MatchFinder::MatchResult&,
- LatticeTransferState& State) {
+ [](const CXXOperatorCallExpr *Expr, const MatchFinder::MatchResult &,
+ LatticeTransferState &State) {
transferComparisonOperator(Expr, State,
/*IsNegative=*/true);
})
+ .CaseOfCFGStmt<CallExpr>(isOkStatusCall(), transferOkStatusCall)
+ .CaseOfCFGStmt<CallExpr>(isNotOkStatusCall(), transferNotOkStatusCall)
.Build();
}
diff --git a/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp b/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
index d3dee58651396..461af73ea6c01 100644
--- a/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
+++ b/clang/unittests/Analysis/FlowSensitive/MockHeaders.cpp
@@ -1356,7 +1356,7 @@ bool operator==(const Status &lhs, const Status &rhs);
bool operator!=(const Status &lhs, const Status &rhs);
Status OkStatus();
-Status InvalidArgumentError(char *);
+Status InvalidArgumentError(const char *);
#endif // STATUS_H
)cc";
diff --git a/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp b/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
index 99f04cc8fe7e7..e7fe378a6973d 100644
--- a/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
+++ b/clang/unittests/Analysis/FlowSensitive/UncheckedStatusOrAccessModelTestFixture.cpp
@@ -2710,6 +2710,36 @@ TEST_P(UncheckedStatusOrAccessModelTest, EqualityCheck) {
}
}
)cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() == absl::OkStatus())
+ sor.value();
+ else
+ sor.value(); // [[unsafe]]
+ }
+ )cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() != absl::OkStatus())
+ sor.value(); // [[unsafe]]
+ else
+ sor.value();
+ }
+ )cc");
+ ExpectDiagnosticsFor(R"cc(
+#include "unchecked_statusor_access_test_defs.h"
+
+ void target(STATUSOR_INT sor) {
+ if (sor.status() != absl::InvalidArgumentError("oh no"))
+ sor.value(); // [[unsafe]]
+ else
+ sor.value(); // [[unsafe]]
+ }
+ )cc");
ExpectDiagnosticsFor(
R"cc(
#include "unchecked_statusor_access_test_defs.h"
|
|
@BaLiKfromUA CC |
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This allows comparison which these status codes