DWARFListTableTest.cpp
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//===- DWARFListTableTest.cpp ---------------------------------------------===//
//
// 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 "llvm/DebugInfo/DWARF/DWARFListTable.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(DWARFListTableHeader, TruncatedLength) {
static const char SecData[] = "\x33\x22\x11"; // Truncated DWARF32 length
DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),
/*isLittleEndian=*/true,
/*AddrSize=*/4);
DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",
/*ListTypeString=*/"range");
uint64_t Offset = 0;
EXPECT_THAT_ERROR(
Header.extract(Extractor, &Offset),
FailedWithMessage(
"parsing .debug_rnglists table at offset 0x0: unexpected end of data "
"at offset 0x3 while reading [0x0, 0x4)"));
// length() is expected to return 0 to indicate that the unit length field
// can not be parsed and so we can not, for example, skip the current set
// to continue parsing from the next one.
EXPECT_EQ(Header.length(), 0u);
}
TEST(DWARFListTableHeader, TruncatedLengthDWARF64) {
static const char SecData[] =
"\xff\xff\xff\xff" // DWARF64 mark
"\x55\x44\x33\x22\x11"; // Truncated DWARF64 length
DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),
/*isLittleEndian=*/true,
/*AddrSize=*/4);
DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",
/*ListTypeString=*/"range");
uint64_t Offset = 0;
EXPECT_THAT_ERROR(
Header.extract(Extractor, &Offset),
FailedWithMessage(
"parsing .debug_rnglists table at offset 0x0: unexpected end of data "
"at offset 0x9 while reading [0x4, 0xc)"));
// length() is expected to return 0 to indicate that the unit length field
// can not be parsed and so we can not, for example, skip the current set
// to continue parsing from the next one.
EXPECT_EQ(Header.length(), 0u);
}
TEST(DWARFListTableHeader, TruncatedHeader) {
static const char SecData[] = "\x02\x00\x00\x00" // Length
"\x05\x00"; // Version
DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),
/*isLittleEndian=*/true,
/*AddrSize=*/4);
DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",
/*ListTypeString=*/"range");
uint64_t Offset = 0;
EXPECT_THAT_ERROR(
Header.extract(Extractor, &Offset),
FailedWithMessage(".debug_rnglists table at offset 0x0 has too small "
"length (0x6) to contain a complete header"));
// length() is expected to return the full length of the set if the unit
// length field is read, even if an error occurred during the parsing,
// to allow skipping the current set and continue parsing from the next one.
EXPECT_EQ(Header.length(), 6u);
}
} // end anonymous namespace