File: ExceptionEscapeCheck.cpp

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-16
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,496,368 kB
  • sloc: cpp: 5,593,980; ansic: 986,873; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,547; xml: 953; cs: 573; fortran: 567
file content (76 lines) | stat: -rw-r--r-- 3,043 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
//===--- ExceptionEscapeCheck.cpp - clang-tidy ----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "ExceptionEscapeCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/OpenMPClause.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/StmtOpenMP.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchersMacros.h"

using namespace clang::ast_matchers;

namespace clang {
namespace tidy {
namespace openmp {

ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
                                           ClangTidyContext *Context)
    : ClangTidyCheck(Name, Context),
      RawIgnoredExceptions(Options.get("IgnoredExceptions", "")) {
  llvm::SmallVector<StringRef, 8> FunctionsThatShouldNotThrowVec,
      IgnoredExceptionsVec;

  llvm::StringSet<> IgnoredExceptions;
  StringRef(RawIgnoredExceptions).split(IgnoredExceptionsVec, ",", -1, false);
  llvm::transform(IgnoredExceptionsVec, IgnoredExceptionsVec.begin(),
                  [](StringRef S) { return S.trim(); });
  IgnoredExceptions.insert(IgnoredExceptionsVec.begin(),
                           IgnoredExceptionsVec.end());
  Tracer.ignoreExceptions(std::move(IgnoredExceptions));
  Tracer.ignoreBadAlloc(true);
}

void ExceptionEscapeCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
  Options.store(Opts, "IgnoredExceptions", RawIgnoredExceptions);
}

void ExceptionEscapeCheck::registerMatchers(MatchFinder *Finder) {
  Finder->addMatcher(ompExecutableDirective(
                         unless(isStandaloneDirective()),
                         hasStructuredBlock(stmt().bind("structured-block")))
                         .bind("directive"),
                     this);
}

void ExceptionEscapeCheck::check(const MatchFinder::MatchResult &Result) {
  const auto *Directive =
      Result.Nodes.getNodeAs<OMPExecutableDirective>("directive");
  assert(Directive && "Expected to match some OpenMP Executable directive.");
  const auto *StructuredBlock =
      Result.Nodes.getNodeAs<Stmt>("structured-block");
  assert(StructuredBlock && "Expected to get some OpenMP Structured Block.");

  if (Tracer.analyze(StructuredBlock).getBehaviour() !=
      utils::ExceptionAnalyzer::State::Throwing)
    return; // No exceptions have been proven to escape out of the struc. block.

  // FIXME: We should provide more information about the exact location where
  // the exception is thrown, maybe the full path the exception escapes.

  diag(StructuredBlock->getBeginLoc(),
       "an exception thrown inside of the OpenMP '%0' region is not caught in "
       "that same region")
      << getOpenMPDirectiveName(Directive->getDirectiveKind());
}

} // namespace openmp
} // namespace tidy
} // namespace clang