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Don't catch exceptions by value

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This commit is contained in:
Eelco Dolstra 2019-09-22 21:29:33 +02:00
parent 14d3f45009
commit 893be6f5e3
5 changed files with 7 additions and 7 deletions
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4
src/libexpr/json-to-value.cc
View file

@ -111,9 +111,9 @@ static void parseJSON(EvalState & state, const char * & s, Value & v)
mkFloat(v, stod(tmp_number));
else
mkInt(v, stol(tmp_number));
} catch (std::invalid_argument e) {
} catch (std::invalid_argument & e) {
throw JSONParseError("invalid JSON number");
} catch (std::out_of_range e) {
} catch (std::out_of_range & e) {
throw JSONParseError("out-of-range JSON number");
}
}

2
src/libexpr/primops/fetchGit.cc
View file

@ -37,7 +37,7 @@ GitInfo exportGit(ref<Store> store, std::string uri,
try {
runProgram("git", true, { "-C", uri, "diff-index", "--quiet", "HEAD", "--" });
} catch (ExecError e) {
} catch (ExecError & e) {
if (!WIFEXITED(e.status) || WEXITSTATUS(e.status) != 1) throw;
clean = false;
}

4
src/libstore/local-store.cc
View file

@ -872,8 +872,8 @@ void LocalStore::querySubstitutablePathInfos(const PathSet & paths,
info->references,
narInfo ? narInfo->fileSize : 0,
info->narSize};
} catch (InvalidPath) {
} catch (SubstituterDisabled) {
} catch (InvalidPath &) {
} catch (SubstituterDisabled &) {
} catch (Error & e) {
if (settings.tryFallback)
printError(e.what());

2
src/nix-build/nix-build.cc
View file

@ -280,7 +280,7 @@ static void _main(int argc, char * * argv)
auto absolute = i;
try {
absolute = canonPath(absPath(i), true);
} catch (Error e) {};
} catch (Error & e) {};
if (store->isStorePath(absolute) && std::regex_match(absolute, std::regex(".*\\.drv(!.*)?")))
drvs.push_back(DrvInfo(*state, store, absolute));
else

2
src/nix/edit.cc
View file

@ -50,7 +50,7 @@ struct CmdEdit : InstallableCommand
int lineno;
try {
lineno = std::stoi(std::string(pos, colon + 1));
} catch (std::invalid_argument e) {
} catch (std::invalid_argument & e) {
throw Error("cannot parse line number '%s'", pos);
}