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Fix FreeBSD build with GCC #56

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merged 2 commits into from
Mar 4, 2021

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arichardson
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@arichardson arichardson commented Mar 3, 2021

And one minor follow-up cleanup.

Apparently FreeBSD's GCC defines NULL to 0 in C++11 mode and this causes
the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.
GTest 1.10 needs C++11 and all tests are compiled with -std=c++11.
@google-cla google-cla bot added the cla: yes label Mar 3, 2021
freebsd-git pushed a commit to freebsd/freebsd-src that referenced this pull request Mar 3, 2021
Apparently GCC defines NULL to 0 in C++11 mode (instead of nullptr), so
this causes the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.

Submitted upstream as google/capsicum-test#56

Reported by:	Jenkins CI
@@ -72,11 +72,14 @@ char ProcessState(int pid) {
}
unsigned int count = 0;
struct procstat *prstat = procstat_open_sysctl();
EXPECT_NE(NULL, prstat) << "procstat_open_sysctl failed.";
EXPECT_NE(nullptr, prstat) << "procstat_open_sysctl failed.";
errno = 0;
struct kinfo_proc *p = procstat_getprocs(prstat, KERN_PROC_PID, pid, &count);
if (p == NULL || count == 0) {
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How come this one isn't an issue?

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I think GCC lets you compare to zero/__null, but template instantiations use unsigned long?

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Or more likely: literal zero is fine, but by the time the template is instatiated this is a pointer-integer comparison.

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Ah right, testing::internal::CmpHelperNE. Blegh

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@daviddrysdale daviddrysdale merged commit 57b070e into google:dev Mar 4, 2021
freebsd-git pushed a commit to freebsd/freebsd-src that referenced this pull request Mar 17, 2021
Apparently GCC defines NULL to 0 in C++11 mode (instead of nullptr), so
this causes the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.

Submitted upstream as google/capsicum-test#56

Reported by:	Jenkins CI

(cherry picked from commit 47ceb65)
ericbsd pushed a commit to ghostbsd/ghostbsd-src that referenced this pull request Mar 24, 2021
Apparently GCC defines NULL to 0 in C++11 mode (instead of nullptr), so
this causes the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.

Submitted upstream as google/capsicum-test#56

Reported by:	Jenkins CI

(cherry picked from commit 47ceb65)
arichardson added a commit to arichardson/cheribsd that referenced this pull request Jul 25, 2021
Apparently GCC defines NULL to 0 in C++11 mode (instead of nullptr), so
this causes the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.

Submitted upstream as google/capsicum-test#56

Reported by:	Jenkins CI

(cherry picked from commit 47ceb65)
bsdjhb pushed a commit to bsdjhb/cheribsd that referenced this pull request Nov 3, 2021
Apparently GCC defines NULL to 0 in C++11 mode (instead of nullptr), so
this causes the following error:
```
In file included from capsicum-test.h:15,
                 from capsicum-test.cc:1:
gtest-1.10.0/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperNE(const char*, const char*, const T1&, const T2&) [with T1 = long int; T2 = procstat*]':
capsicum-test.cc:75:3:   required from here
gtest-1.10.0/include/gtest/gtest.h:1621:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 1609 |   if (val1 op val2) {\
      |       ~~~~~~~~~~~~
......
 1621 | GTEST_IMPL_CMP_HELPER_(NE, !=);
gtest-1.10.0/include/gtest/gtest.h:1609:12: note: in definition of macro 'GTEST_IMPL_CMP_HELPER_'
 1609 |   if (val1 op val2) {\
      |            ^~
```

Fix this by using nullptr directly.

Submitted upstream as google/capsicum-test#56

Reported by:	Jenkins CI
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3 participants