[Lldb-commits] [PATCH] D83306: [lldb/API] Overwrite variables with SBLaunchInfo::SetEnvironment(append=true)
Pavel Labath via Phabricator via lldb-commits
lldb-commits at lists.llvm.org
Tue Jul 7 07:12:32 PDT 2020
labath created this revision.
labath added reviewers: clayborg, wallace, jingham.
Herald added a project: LLDB.
This function was documented to overwrite entries with D76111 <https://reviews.llvm.org/D76111>, which was
adding a couple of similar functions. However, this function (unlike the
functions added in that patch) was/is not actually overwriting variables
- any pre-existing variables would get ignored.
This behavior does not seem to be intentional. In fact, before the refactor in
D41359 <https://reviews.llvm.org/D41359>, this function could introduce duplicate entries, which could
have very surprising effects both inside lldb and on other applications
(some applications would take the first value, some the second one; in
lldb, attempting to unset a variable could make the second variable
become active, etc.).
Overwriting seems to be the most reasonable behavior here, so change the
code to match documentation.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D83306
Files:
lldb/source/API/SBLaunchInfo.cpp
lldb/test/API/python_api/sbenvironment/TestSBEnvironment.py
Index: lldb/test/API/python_api/sbenvironment/TestSBEnvironment.py
===================================================================
--- lldb/test/API/python_api/sbenvironment/TestSBEnvironment.py
+++ lldb/test/API/python_api/sbenvironment/TestSBEnvironment.py
@@ -53,6 +53,11 @@
launch_info.SetEnvironment(env, append=True)
self.assertEqual(launch_info.GetEnvironment().GetNumValues(), env_count + 1)
+ env.Set("FOO", "baz", overwrite=True)
+ launch_info.SetEnvironment(env, append=True)
+ self.assertEqual(launch_info.GetEnvironment().GetNumValues(), env_count + 1)
+ self.assertEqual(launch_info.GetEnvironment().Get("FOO"), "baz")
+
# Make sure we can replace the launchInfo's environment
env.Clear()
env.Set("BAR", "foo", overwrite=True)
@@ -120,6 +125,11 @@
env.SetEntries(entries, append=False)
self.assertEqualEntries(env, ["X=x", "Y=y"])
+ entries.Clear()
+ entries.AppendList(["X=y", "Y=x"], 2)
+ env.SetEntries(entries, append=True)
+ self.assertEqualEntries(env, ["X=y", "Y=x"])
+
# Test clear
env.Clear()
self.assertEqualEntries(env, [])
Index: lldb/source/API/SBLaunchInfo.cpp
===================================================================
--- lldb/source/API/SBLaunchInfo.cpp
+++ lldb/source/API/SBLaunchInfo.cpp
@@ -190,9 +190,10 @@
LLDB_RECORD_METHOD(void, SBLaunchInfo, SetEnvironment,
(const lldb::SBEnvironment &, bool), env, append);
Environment &refEnv = env.ref();
- if (append)
- m_opaque_sp->GetEnvironment().insert(refEnv.begin(), refEnv.end());
- else
+ if (append) {
+ for (auto &KV : refEnv)
+ m_opaque_sp->GetEnvironment().insert_or_assign(KV.first(), KV.second);
+ } else
m_opaque_sp->GetEnvironment() = refEnv;
m_opaque_sp->RegenerateEnvp();
}
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