forked from OSchip/llvm-project
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
|
//===-- asan_scariness_score.h ----------------------------------*- C++ -*-===//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is distributed under the University of Illinois Open Source
|
||
|
|
// License. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This file is a part of AddressSanitizer, an address sanity checker.
|
||
|
|
//
|
||
|
|
// Compute the level of scariness of the error message.
|
||
|
|
// Don't expect any deep science here, just a set of heuristics that suggest
|
||
|
|
// that e.g. 1-byte-read-global-buffer-overflow is less scary than
|
||
|
|
// 8-byte-write-stack-use-after-return.
|
||
|
|
//
|
||
|
|
// Every error report has one or more features, such as memory access size,
|
||
|
|
// type (read or write), type of accessed memory (e.g. free-d heap, or a global
|
||
|
|
// redzone), etc. Every such feature has an int score and a string description.
|
||
|
|
// The overall score is the sum of all feature scores and the description
|
||
|
|
// is a concatenation of feature descriptions.
|
||
|
|
// Examples:
|
||
|
|
// 17 (4-byte-read-heap-buffer-overflow)
|
||
|
|
// 65 (multi-byte-write-stack-use-after-return)
|
||
|
|
// 10 (null-deref)
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#ifndef ASAN_SCARINESS_SCORE_H
|
||
|
|
#define ASAN_SCARINESS_SCORE_H
|
||
|
|
|
||
|
|
#include "asan_flags.h"
|
||
|
|
#include "sanitizer_common/sanitizer_common.h"
|
||
|
|
#include "sanitizer_common/sanitizer_libc.h"
|
||
|
|
|
||
|
|
namespace __asan {
|
||
|
|
class ScarinessScore {
|
||
|
|
public:
|
||
|
|
ScarinessScore() {}
|
||
|
|
void Scare(int add_to_score, const char *reason) {
|
||
|
|
if (descr[0])
|
||
|
|
internal_strlcat(descr, "-", sizeof(descr));
|
||
|
|
internal_strlcat(descr, reason, sizeof(descr));
|
||
|
|
score += add_to_score;
|
||
|
|
};
|
||
|
|
int GetScore() const { return score; }
|
||
|
|
const char *GetDescription() const { return descr; }
|
||
|
|
void Print() {
|
||
|
|
if (score && flags()->print_scariness)
|
||
|
|
Printf("SCARINESS: %d (%s)\n", score, descr);
|
||
|
|
}
|
||
|
|
static void PrintSimple(int score, const char *descr) {
|
||
|
|
ScarinessScore SS;
|
||
|
|
SS.Scare(score, descr);
|
||
|
|
SS.Print();
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
int score = 0;
|
||
|
|
char descr[1024] = {0};
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace __asan
|
||
|
|
|
||
|
|
#endif // ASAN_SCARINESS_SCORE_H
|