Skip to content

fix: reject invalid LLVM dwarf attributes #5

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
tonycoder-hub wants to merge 1 commit into
base: master
Choose a base branch
from
Open

fix: reject invalid LLVM dwarf attributes #5

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 12 additions & 3 deletions ecmascript/compiler/codegen/llvm/llvm_codegen.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
*/

#include "ecmascript/compiler/codegen/llvm/llvm_codegen.h"
#include <charconv>
#include <algorithm>
#include <vector>
#if defined(PANDA_TARGET_MACOS) || defined(PANDA_TARGET_IOS)
Expand Down Expand Up @@ -617,9 +618,17 @@ kungfu::CalleeRegAndOffsetVec LLVMAssembler::GetCalleeReg2Offset(LLVMValueRef fn
size_t keySZ = expectedKey.size();
size_t strSZ = str.size();
if (strSZ >= keySZ && str.substr(0, keySZ) == expectedKey) {
int RegNum = std::stoi(str.substr(keySZ, strSZ - keySZ));
auto value = std::stoi(std::string(Attr.getValueAsString()));
info.push_back(std::make_pair(RegNum, value));
int regNum = 0;
int value = 0;
const std::string regText = str.substr(keySZ, strSZ - keySZ);
const std::string valueText = std::string(Attr.getValueAsString());
auto regParsed = std::from_chars(regText.data(), regText.data() + regText.size(), regNum);
auto valueParsed = std::from_chars(valueText.data(), valueText.data() + valueText.size(), value);
if (regParsed.ec != std::errc{} || regParsed.ptr != regText.data() + regText.size() ||
valueParsed.ec != std::errc{} || valueParsed.ptr != valueText.data() + valueText.size()) {
continue;
}
info.push_back(std::make_pair(regNum, value));
(void)log;
}
}
Expand Down