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Fix pr17056.

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This makes llvm-nm ignore members that are not sufficiently aligned for
lib/Object to handle.

These archives are invalid. GNU AR is able to handle this, but in general
just warns about broken archive members.

We should probably start warning too, but for now just make sure llvm-nm
exits with an 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211036 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-06-16 16:41:00 +00:00
parent 0659928fec
commit 7f2f94faeb
3 changed files with 11 additions and 5 deletions
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10
lib/Object/ELFObjectFile.cpp
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@@ -36,7 +36,7 @@ ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(
Obj, EC, BufferOwned));
else
llvm_unreachable("Invalid alignment for ELF file!");
return object_error::parse_failed;
else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 4)
@@ -48,7 +48,7 @@ ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC,
BufferOwned));
else
llvm_unreachable("Invalid alignment for ELF file!");
return object_error::parse_failed;
else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 8)
@@ -60,7 +60,7 @@ ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC,
BufferOwned));
else
llvm_unreachable("Invalid alignment for ELF file!");
return object_error::parse_failed;
else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 8)
@@ -72,10 +72,10 @@ ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(
Obj, EC, BufferOwned));
else
llvm_unreachable("Invalid alignment for ELF file!");
return object_error::parse_failed;
}
else
report_fatal_error("Buffer is not an ELF object file!");
llvm_unreachable("Buffer is not an ELF object file!");
if (EC)
return EC;