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[LTO] onfig::addSaveTemps: clear ResolutionFile upon an error

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Otherwise ld.lld -save-temps will crash when writing to ResolutionFile.

llvm-lto2 -save-temps does not crash because it exits immediately.

Reviewed By: evgeny777

Differential Revision: https://reviews.llvm.org/D75426
This commit is contained in:
Fangrui Song 2020-03-01 12:06:51 -08:00
parent 5b890d8e7a
commit 4cdc54cceb
1 changed files with 3 additions and 1 deletions
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4
lib/LTO/LTOBackend.cpp
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@ -61,8 +61,10 @@ Error Config::addSaveTemps(std::string OutputFileName,
std::error_code EC; std::error_code EC;
ResolutionFile = std::make_unique<raw_fd_ostream>( ResolutionFile = std::make_unique<raw_fd_ostream>(
OutputFileName + "resolution.txt", EC, sys::fs::OpenFlags::OF_Text); OutputFileName + "resolution.txt", EC, sys::fs::OpenFlags::OF_Text);
if (EC) if (EC) {
ResolutionFile.reset();
return errorCodeToError(EC); return errorCodeToError(EC);
}
auto setHook = [&](std::string PathSuffix, ModuleHookFn &Hook) { auto setHook = [&](std::string PathSuffix, ModuleHookFn &Hook) {
// Keep track of the hook provided by the linker, which also needs to run. // Keep track of the hook provided by the linker, which also needs to run.