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[llvm-jitlink] Scan input files for first object to determine triple.

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The previous logic would crash if the first input file was an archive rather
than an object.
This commit is contained in:
Lang Hames 2021-03-19 19:13:50 -07:00
parent d628808ad9
commit 8f653b1bbd
1 changed files with 16 additions and 5 deletions
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21
tools/llvm-jitlink/llvm-jitlink.cpp
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@ -1008,11 +1008,22 @@ Session::findSymbolInfo(StringRef SymbolName, Twine ErrorMsgStem) {
static Triple getFirstFileTriple() {
static Triple FirstTT = []() {
assert(!InputFiles.empty() && "InputFiles can not be empty");
auto ObjBuffer =
ExitOnErr(errorOrToExpected(MemoryBuffer::getFile(InputFiles.front())));
auto Obj = ExitOnErr(
object::ObjectFile::createObjectFile(ObjBuffer->getMemBufferRef()));
return Obj->makeTriple();
for (auto InputFile : InputFiles) {
auto ObjBuffer =
ExitOnErr(errorOrToExpected(MemoryBuffer::getFile(InputFile)));
switch (identify_magic(ObjBuffer->getBuffer())) {
case file_magic::elf_relocatable:
case file_magic::macho_object:
case file_magic::coff_object: {
auto Obj = ExitOnErr(
object::ObjectFile::createObjectFile(ObjBuffer->getMemBufferRef()));
return Obj->makeTriple();
}
default:
break;
}
}
return Triple();
}();
return FirstTT;