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llvm-objdump: Fix crash bug with printing unwind info on stripped file.

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The current COFF unwind printer tries to print SEH handler function names,
assuming that it can always find function names in string table. It crashes
if file being read has no symbol table (i.e. executable).

With this patch, llvm-objdump prints SEH handler's RVA if there's no symbol
table entry for that RVA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202466 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rui Ueyama 2014-02-28 05:21:29 +00:00
parent 6738a1ba7a
commit 49c76560f3
1 changed files with 9 additions and 7 deletions
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16
tools/llvm-objdump/COFFDump.cpp
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@ -182,10 +182,10 @@ static error_code resolveSymbol(const std::vector<RelocationRef> &Rels,
return EC;
if (Ofs == Offset) {
Sym = *I->getSymbol();
break;
return object_error::success;
}
}
return object_error::success;
return object_error::parse_failed;
}
// Given a vector of relocations for a section and an offset into this section
@ -225,11 +225,13 @@ static void printCOFFSymbolAddress(llvm::raw_ostream &Out,
const std::vector<RelocationRef> &Rels,
uint64_t Offset, uint32_t Disp) {
StringRef Sym;
if (error(resolveSymbolName(Rels, Offset, Sym)))
return;
Out << Sym;
if (Disp > 0)
Out << format(" + 0x%04x", Disp);
if (!resolveSymbolName(Rels, Offset, Sym)) {
Out << Sym;
if (Disp > 0)
Out << format(" + 0x%04x", Disp);
} else {
Out << format("0x%04x", Disp);
}
}
static void