[LTP] [RFC PATCH 1/1] regen.sh: Use intptr_t for tst_syscall return

[Teo Couprie Diaz]

Some syscalls directly return pointers, like brk or mmap. int is currently
used for the return value in tst_syscall but is not large enough
to guarantee that such a returned value will fit.
Instead, use intptr_t which is guaranted to be castable to (void *)
without loss of data.

Signed-off-by: Teo Couprie Diaz <teo.coupriediaz@arm.com>
---
 include/lapi/syscalls/regen.sh |   2 +-
 runtest/check_tst_syscall      | 190 +++++++++++++++++++++++++++++++++
 2 files changed, 191 insertions(+), 1 deletion(-)
 create mode 100644 runtest/check_tst_syscall

diff --git a/include/lapi/syscalls/regen.sh b/include/lapi/syscalls/regen.sh
index 3bf38fd03..97027e2f3 100755
--- a/include/lapi/syscalls/regen.sh
+++ b/include/lapi/syscalls/regen.sh
@@ -48,7 +48,7 @@ cat << EOF > "${output_pid}"
 #endif
 
 #define tst_syscall(NR, ...) ({ \\
-	int tst_ret; \\
+	intptr_t tst_ret; \\
 	if (NR == __LTP__NR_INVALID_SYSCALL) { \\
 		errno = ENOSYS; \\
 		tst_ret = -1; \\
diff --git a/runtest/check_tst_syscall b/runtest/check_tst_syscall
new file mode 100644
index 000000000..7a6003593
--- /dev/null
+++ b/runtest/check_tst_syscall
@@ -0,0 +1,190 @@
+cve-2015-3290 cve-2015-3290
+cve-2016-10044 cve-2016-10044
+cve-2016-7117 cve-2016-7117
+clock_settime03 clock_settime03
+accept4_01 accept4_01
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+pwritev pwritev
+perf_event_open01 perf_event_open01
+perf_event_open perf_event_open
+capset03 capset03
+capset04 capset04
+capset01 capset01
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+readahead02 readahead02
+readahead01 readahead01
+io_submit02 io_submit02
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+io_submit03 io_submit03
+io_submit03 io_submit03
+clock_adjtime clock_adjtime
+getrusage02 getrusage02
+faccessat01 faccessat01
+timer_delete01 timer_delete01
+timer_delete02 timer_delete02
+rt_sigsuspend01 rt_sigsuspend01
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+ppoll01 ppoll01
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+readdir21 readdir21
+mlock202 mlock202
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+mlock203 mlock203
+timerfd03 timerfd03
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+compat_tst_16 compat_tst_16
+compat_16 compat_16
+sigpending02 sigpending02
+signalfd4_02 signalfd4_02
+signalfd4_01 signalfd4_01
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+memfd_create_common memfd_create_common
+getcpu01 getcpu01
+tgkill tgkill
+sysctl03 sysctl03
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+sysctl04 sysctl04
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+sendmmsg_var sendmmsg_var
+copy_file_range copy_file_range
+rt_sigqueueinfo rt_sigqueueinfo
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+setns01 setns01
+mprotect01 mprotect01
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+io_getevents01 io_getevents01
+fork05 fork05
+fcntl_common fcntl_common
+fcntl31 fcntl31
+timer_gettime01 timer_gettime01
+membarrier01 membarrier01
+set_thread_area01 set_thread_area01
+swapon01 swapon01
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+request_key05 request_key05
+epoll_create epoll_create
+openat openat
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+getrandom04 getrandom04
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+swapoff02 swapoff02
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+futex2test futex2test
+ioprio ioprio
+getitimer02 getitimer02
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+getrlimit03 getrlimit03
+ustat01 ustat01
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+libclone libclone
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+kmsg01 kmsg01
+pt_test pt_test
+libcpuset libcpuset
-- 
2.25.1