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40bfd37ca7
Whilst working on improvements to the error handling of the debug line parsing code, I noticed that if an invalid offset were to be specified in a call to getOrParseLineTable(), an entry in the LineTableMap would still be created, even if the offset was not within the section range. The immediate parsing attempt afterwards would fail (it would end up getting a version of 0), and thereafter, any subsequent calls to getOrParseLineTable or getLineTable would return the default- constructed, invalid line table. In reality, we shouldn't even attempt to parse this table, and we should always return a nullptr from these two functions for this situation. I have tested this via a unit test, which required some new framework for unit testing debug line. My plan is to add quite a few more unit tests for the new error reporting mechanism that will follow shortly, hence the reason why the supporting code for the tests are written the way they are - I intend to extend the DwarfGenerator class to support generating debug line. At that point, I'll make sure that there are a few positive test cases for this and the parsing code too. Differential Revision: https://reviews.llvm.org/D44200 Reviewers: JDevlieghere, aprantl llvm-svn: 326995
30 lines
763 B
C++
30 lines
763 B
C++
//===--- unittests/DebugInfo/DWARF/DwarfUtils.h -----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UNITTESTS_DEBUG_INFO_DWARF_DWARFUTILS_H
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#define LLVM_UNITTESTS_DEBUG_INFO_DWARF_DWARFUTILS_H
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#include <cstdint>
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namespace llvm {
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class Triple;
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namespace dwarf {
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namespace utils {
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Triple getHostTripleForAddrSize(uint8_t AddrSize);
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bool isConfigurationSupported(Triple &T);
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} // end namespace utils
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} // end namespace dwarf
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} // end namespace llvm
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#endif // LLVM_UNITTESTS_DEBUG_INFO_DWARF_DWARFUTILS_H
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