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cmake: Fix `-E time` argument passing to child 

Since this command was introduced in 2002 it has incorrectly constructed
the child process command line by concatenating arguments separated by
spaces with no quoting.  Fix this by passing the command argument vector
directly to RunSingleCommand without an intermediate quoting and
re-parsing step.

Reported-by: Andrey Pokrovskiy <wonder.mice@gmail.com>
This commit is contained in:
Brad King 2016-01-20 08:45:55 -05:00
parent d8bced813c
commit 1787269ef3
6 changed files with 19 additions and 2 deletions
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7
Help/release/dev/cmake-E-time-quoting.rst Normal file
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@ -0,0 +1,7 @@
cmake-E-time-quoting
--------------------
* The :manual:`cmake(1)` ``-E time`` command now properly passes arguments
with spaces or special characters through to the child process. This
may break scripts that worked around the bug with their own extra
quoting or escaping.

4
Source/cmcmd.cxx
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@ -554,7 +554,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
// Clock command
else if (args[1] == "time" && args.size() > 2)
{
std::string command = cmJoin(cmMakeRange(args).advance(2), " ");
std::vector<std::string> command(args.begin()+2, args.end());
clock_t clock_start, clock_finish;
time_t time_start, time_finish;
@ -562,7 +562,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
time(&time_start);
clock_start = clock();
int ret =0;
cmSystemTools::RunSingleCommand(command.c_str(), 0, 0, &ret);
cmSystemTools::RunSingleCommand(command, 0, 0, &ret);
clock_finish = clock();
time(&time_finish);

1
Tests/RunCMake/CommandLine/E_time-no-arg-result.txt Normal file
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@ -0,0 +1 @@
1

3
Tests/RunCMake/CommandLine/E_time-no-arg-stderr.txt Normal file
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@ -0,0 +1,3 @@
^CMake Error: cmake version .*
Usage: .* -E <command> \[arguments\.\.\.\]
Available commands:

3
Tests/RunCMake/CommandLine/E_time-stdout.txt Normal file
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@ -0,0 +1,3 @@
^hello world
Elapsed time: [^
]*$

3
Tests/RunCMake/CommandLine/RunCMakeTest.cmake
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@ -12,6 +12,9 @@ run_cmake_command(E_echo_append ${CMAKE_COMMAND} -E echo_append)
run_cmake_command(E_rename-no-arg ${CMAKE_COMMAND} -E rename)
run_cmake_command(E_touch_nocreate-no-arg ${CMAKE_COMMAND} -E touch_nocreate)
run_cmake_command(E_time ${CMAKE_COMMAND} -E time ${CMAKE_COMMAND} -E echo "hello world")
run_cmake_command(E_time-no-arg ${CMAKE_COMMAND} -E time)
run_cmake_command(E___run_iwyu-no-iwyu ${CMAKE_COMMAND} -E __run_iwyu -- command-does-not-exist)
run_cmake_command(E___run_iwyu-bad-iwyu ${CMAKE_COMMAND} -E __run_iwyu --iwyu=iwyu-does-not-exist -- command-does-not-exist)
run_cmake_command(E___run_iwyu-no--- ${CMAKE_COMMAND} -E __run_iwyu --iwyu=iwyu-does-not-exist command-does-not-exist)