Fix gdb.base/attach-twice.c build on NetBSD

Message ID 20200417215056.15117-1-n54@gmx.com
State New
Headers show
Series
  • Fix gdb.base/attach-twice.c build on NetBSD
Related show

Commit Message

Kamil Rytarowski April 17, 2020, 9:50 p.m.
Add a fallback definition of PTRACE_ATTACH that is an alias of
PT_ATTACH. Change the 4th argument of ptrace(2) to 0 as it is
compatible with void * (Linux) and int (NetBSD) arguments.

Include <sys/types.h> for <sys/ptrace.h>.

gdb/testsuite/ChangeLog:

	* gdb.base/attach-twice.c: Include "sys/types.h".
	(PTRACE_ATTACH): Add fallback definition.
	(main): Pass `0' to the 4th argument of `ptrace'.
---
 gdb/testsuite/ChangeLog               | 6 ++++++
 gdb/testsuite/gdb.base/attach-twice.c | 9 ++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

--
2.25.0

Comments

Simon Marchi April 17, 2020, 10:19 p.m. | #1
On 2020-04-17 5:50 p.m., Kamil Rytarowski wrote:
> Add a fallback definition of PTRACE_ATTACH that is an alias of

> PT_ATTACH. Change the 4th argument of ptrace(2) to 0 as it is

> compatible with void * (Linux) and int (NetBSD) arguments.

> 

> Include <sys/types.h> for <sys/ptrace.h>.

> 

> gdb/testsuite/ChangeLog:

> 

> 	* gdb.base/attach-twice.c: Include "sys/types.h".

> 	(PTRACE_ATTACH): Add fallback definition.

> 	(main): Pass `0' to the 4th argument of `ptrace'.

> ---

>  gdb/testsuite/ChangeLog               | 6 ++++++

>  gdb/testsuite/gdb.base/attach-twice.c | 9 ++++++++-

>  2 files changed, 14 insertions(+), 1 deletion(-)

> 

> diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog

> index 44ada371679..b24efc772b2 100644

> --- a/gdb/testsuite/ChangeLog

> +++ b/gdb/testsuite/ChangeLog

> @@ -1,3 +1,9 @@

> +2020-04-17  Kamil Rytarowski  <n54@gmx.com>

> +

> +	* gdb.base/attach-twice.c: Include "sys/types.h".

> +	(PTRACE_ATTACH): Add fallback definition.

> +	(main): Pass `0' to the 4th argument of `ptrace'.

> +

>  2020-04-17  Kamil Rytarowski  <n54@gmx.com>

> 

>  	* gdb.base/fork-running-state.c: Include "signal.h".

> diff --git a/gdb/testsuite/gdb.base/attach-twice.c b/gdb/testsuite/gdb.base/attach-twice.c

> index 9299b3abf81..31cd087453f 100644

> --- a/gdb/testsuite/gdb.base/attach-twice.c

> +++ b/gdb/testsuite/gdb.base/attach-twice.c

> @@ -18,9 +18,14 @@

>  #include <stdio.h>

>  #include <stdlib.h>

>  #include <unistd.h>

> +#include <sys/types.h>

>  #include <sys/ptrace.h>

>  #include <errno.h>

> 

> +#ifndef PTRACE_ATTACH

> +#define PTRACE_ATTACH PT_ATTACH

> +#endif

> +

>  int

>  main (void)

>  {

> @@ -33,7 +38,9 @@ main (void)

>        exit (1);

>      case 0:

>        errno = 0;

> -      ptrace (PTRACE_ATTACH, getppid (), NULL, NULL);

> +      /* The 4th argument to ptrace () is 0 on purpose, as it is compatible

> +	 between kernels that accept void* (like Linux) and int (NetBSD).  */

> +      ptrace (PTRACE_ATTACH, getppid (), NULL, 0);

>        if (errno != 0)

>  	perror ("PTRACE_ATTACH");

>        break;

> --

> 2.25.0

> 


Thanks, this is ok.

Simon

Patch

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 44ada371679..b24efc772b2 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,9 @@ 
+2020-04-17  Kamil Rytarowski  <n54@gmx.com>
+
+	* gdb.base/attach-twice.c: Include "sys/types.h".
+	(PTRACE_ATTACH): Add fallback definition.
+	(main): Pass `0' to the 4th argument of `ptrace'.
+
 2020-04-17  Kamil Rytarowski  <n54@gmx.com>

 	* gdb.base/fork-running-state.c: Include "signal.h".
diff --git a/gdb/testsuite/gdb.base/attach-twice.c b/gdb/testsuite/gdb.base/attach-twice.c
index 9299b3abf81..31cd087453f 100644
--- a/gdb/testsuite/gdb.base/attach-twice.c
+++ b/gdb/testsuite/gdb.base/attach-twice.c
@@ -18,9 +18,14 @@ 
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/types.h>
 #include <sys/ptrace.h>
 #include <errno.h>

+#ifndef PTRACE_ATTACH
+#define PTRACE_ATTACH PT_ATTACH
+#endif
+
 int
 main (void)
 {
@@ -33,7 +38,9 @@  main (void)
       exit (1);
     case 0:
       errno = 0;
-      ptrace (PTRACE_ATTACH, getppid (), NULL, NULL);
+      /* The 4th argument to ptrace () is 0 on purpose, as it is compatible
+	 between kernels that accept void* (like Linux) and int (NetBSD).  */
+      ptrace (PTRACE_ATTACH, getppid (), NULL, 0);
       if (errno != 0)
 	perror ("PTRACE_ATTACH");
       break;