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llvm-mirror/tools/llvm-pdbutil/PrettyExternalSymbolDumper.cpp
Zachary Turner 9243b281e0 [PDB] One more fix for hasing GSI records.
The reference implementation uses a case-insensitive string
comparison for strings of equal length.  This will cause the
string "tEo" to compare less than "VUo".  However we were using
a case sensitive comparison, which would generate the opposite
outcome.  Switch to a case insensitive comparison.  Also, when
one of the strings contains non-ascii characters, fallback to
a straight memcmp.

The only way to really test this is with a DIA test.  Before this
patch, the test will fail (but succeed if link.exe is used instead
of lld-link).  After the patch, it succeeds even with lld-link.

llvm-svn: 336464
2018-07-06 21:01:42 +00:00

43 lines
1.3 KiB
C++

//===- PrettyExternalSymbolDumper.cpp -------------------------- *- C++ *-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "PrettyExternalSymbolDumper.h"
#include "LinePrinter.h"
#include "llvm/DebugInfo/PDB/PDBSymbolExe.h"
#include "llvm/DebugInfo/PDB/PDBSymbolPublicSymbol.h"
#include "llvm/Support/Format.h"
using namespace llvm;
using namespace llvm::pdb;
ExternalSymbolDumper::ExternalSymbolDumper(LinePrinter &P)
: PDBSymDumper(true), Printer(P) {}
void ExternalSymbolDumper::start(const PDBSymbolExe &Symbol) {
if (auto Vars = Symbol.findAllChildren<PDBSymbolPublicSymbol>()) {
while (auto Var = Vars->getNext())
Var->dump(*this);
}
}
void ExternalSymbolDumper::dump(const PDBSymbolPublicSymbol &Symbol) {
std::string LinkageName = Symbol.getName();
if (Printer.IsSymbolExcluded(LinkageName))
return;
Printer.NewLine();
uint64_t Addr = Symbol.getVirtualAddress();
Printer << "public [";
WithColor(Printer, PDB_ColorItem::Address).get() << format_hex(Addr, 10);
Printer << "] ";
WithColor(Printer, PDB_ColorItem::Identifier).get() << LinkageName;
}