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LogCleaner: Fix the scenario when FLAGS_log_dir has no '/' suffix #972

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merged 3 commits into from
Oct 12, 2023
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LogCleaner: Fix the scenario when FLAGS_log_dir has no '/' suffix #972

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LogCleaner: Fix the scenario when FLAGS_log_dir has no '/' suffix
lingbin Oct 10, 2023
111b908
Address comment
lingbin Oct 11, 2023
eb229bc
Add <iterator>
lingbin Oct 12, 2023
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1 change: 1 addition & 0 deletions AUTHORS
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ Brian Silverman <bsilver16384@gmail.com>
Dmitriy Arbitman <d.arbitman@gmail.com>
Google Inc.
Guillaume Dumont <dumont.guillaume@gmail.com>
LingBin <lingbinlb@gmail.com>
Marco Wang <m.aesophor@gmail.com>
Michael Tanner <michael@tannertaxpro.com>
MiniLight <MiniLightAR@Gmail.com>
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1 change: 1 addition & 0 deletions CONTRIBUTORS
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Expand Up @@ -36,6 +36,7 @@ Håkan L. S. Younes <hyounes@google.com>
Ivan Penkov <ivanpe@google.com>
Jacob Trimble <modmaker@google.com>
Jim Ray <jimray@google.com>
LingBin <lingbinlb@gmail.com>
Marco Wang <m.aesophor@gmail.com>
Michael Darr <mdarr@matician.com>
Michael Tanner <michael@tannertaxpro.com>
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12 changes: 10 additions & 2 deletions src/logging.cc
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Expand Up @@ -2397,8 +2397,16 @@ const vector<string>& GetLoggingDirectories() {
logging_directories_list = new vector<string>;

if ( !FLAGS_log_dir.empty() ) {
// A dir was specified, we should use it
logging_directories_list->push_back(FLAGS_log_dir);
// A dir was specified, we should use it, and make sure to end with
// a directory delimiter.
const char* const dir_delim_end =
possible_dir_delim + sizeof(possible_dir_delim);
if (std::find(possible_dir_delim, dir_delim_end,
FLAGS_log_dir.back()) == dir_delim_end) {
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Suggested change
// A dir was specified, we should use it, and make sure to end with
// a directory delimiter.
const char* const dir_delim_end =
possible_dir_delim + sizeof(possible_dir_delim);
if (std::find(possible_dir_delim, dir_delim_end,
FLAGS_log_dir.back()) == dir_delim_end) {
// Ensure the specified path ends with a directory delimiter
if (std::find(std::begin(possible_dir_delim), std::end(possible_dir_delim),
FLAGS_log_dir.back()) == std::end(possible_dir_delim)) {

You may need to include <iterator>.

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Thanks for your review, already addressed comment.

After testing <iterator> is not needed. My guess is that it is already included in an existing header file.
From https://en.cppreference.com/w/cpp/iterator/begin
It can be seen that std::begin and std::end are defined in many header files.

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That's not how it works. You do need <iterator> which defines std::begin and std::end for statically sized arrays (see IWYU why relying on indirection is a bad style). By 'may' I meant to say that I did not check whether <iterator> is already included in the touched translation unit.

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Just checked logging.cc. <iterator> must definitely be included since it is not present there yet.

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Thanks for your further explanation. <iterator> has been added.

logging_directories_list->push_back(FLAGS_log_dir + "/");
} else {
logging_directories_list->push_back(FLAGS_log_dir);
}
} else {
GetTempDirectories(logging_directories_list);
#ifdef GLOG_OS_WINDOWS
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