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authorBrad King <brad.king@kitware.com>2018-05-14 11:54:37 -0400
committerBrad King <brad.king@kitware.com>2018-05-14 11:59:51 -0400
commit813bcc2997a5692e8d9e141cf12b662b8b4dfbac (patch)
tree1123388bb1cc446ee138dcabf17d01b3f0b2f8c1
parent7b62ec2451f9c7ff0a58dd447e6906c02ac4dc24 (diff)
parent6e594916592e5f8f17b387546d79e484ac092b9e (diff)
downloadcmake-813bcc2997a5692e8d9e141cf12b662b8b4dfbac.tar.gz
Merge branch 'custom-command-expand-empty' into release-3.11
Merge-request: !2074
-rw-r--r--Source/cmCustomCommandGenerator.cxx8
-rw-r--r--Tests/RunCMake/add_custom_target/CommandExpandsEmpty.cmake1
-rw-r--r--Tests/RunCMake/add_custom_target/RunCMakeTest.cmake1
3 files changed, 10 insertions, 0 deletions
diff --git a/Source/cmCustomCommandGenerator.cxx b/Source/cmCustomCommandGenerator.cxx
index 136cf39bea..6c9f9d6f43 100644
--- a/Source/cmCustomCommandGenerator.cxx
+++ b/Source/cmCustomCommandGenerator.cxx
@@ -40,6 +40,14 @@ cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
argv.push_back(std::move(parsed_arg));
}
}
+
+ // Later code assumes at least one entry exists, but expanding
+ // lists on an empty command may have left this empty.
+ // FIXME: Should we define behavior for removing empty commands?
+ if (argv.empty()) {
+ argv.push_back(std::string());
+ }
+
this->CommandLines.push_back(std::move(argv));
}
diff --git a/Tests/RunCMake/add_custom_target/CommandExpandsEmpty.cmake b/Tests/RunCMake/add_custom_target/CommandExpandsEmpty.cmake
new file mode 100644
index 0000000000..bc899a4d21
--- /dev/null
+++ b/Tests/RunCMake/add_custom_target/CommandExpandsEmpty.cmake
@@ -0,0 +1 @@
+add_custom_target(EmptyCustom COMMAND "" COMMAND_EXPAND_LISTS)
diff --git a/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake b/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
index 6c4e91bcaf..2caed03289 100644
--- a/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
+++ b/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
@@ -1,5 +1,6 @@
include(RunCMake)
+run_cmake(CommandExpandsEmpty)
run_cmake(NoArguments)
run_cmake(BadTargetName)
run_cmake(ByproductsNoCommand)