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Christopher Faylor schrieb:
> On Sun, May 28, 2006 at 10:59:35PM +0200, Ralf Habacker wrote:
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>> In the how-to-debug-cygwin.txt there is listed how to run application
>> using strace in gdb:
>>
>> To debug this scenario, do something like this:
>>
>> bash$ gdb -nw yourapp.exe
>> (gdb) dll cygwin1
>> (gdb) l dll_crt0_1
>> (gdb) b <<first line in the function>>
>> (gdb) run
>> (gdb) set strace.active=1
>> (gdb) continue
>>
>>
>> According to winsup/cygwin/include/sys/strace.h the class member active
>> is known now as _active.
>
> I've changed this.
>
>> I have tried to get this running in gdb (cvs), but there is no output in
>> gdb.
>
> Getting output from gdb was not the intent of this section. Look at the
> name of the section: "Program dies when running under strace". If the
> intent was to get output from gdb it would have been something like
> "Make gdb output strace info".
It was not explicit said that there is no output, so I guess it was.
> I'm not aware of any way to have gdb print strace info.
The following patch enables gdb to print cygwin strace messages.
2006-05-29 Ralf Habacker <[EMAIL PROTECTED]>
* win32-nat.c: (handle_output_debug_string): initial strace
output support for cygwin.
Index: gdb/win32-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/win32-nat.c,v
retrieving revision 1.122
diff -u -b -B -r1.122 win32-nat.c
- --- gdb/win32-nat.c 10 Apr 2006 21:43:45 -0000 1.122
+++ gdb/win32-nat.c 29 May 2006 11:19:49 -0000
@@ -927,7 +927,12 @@
/* nothing to do */;
else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof
(_CYGWIN_SIGNAL_STRING) - 1) != 0)
{
- - if (strncmp (s, "cYg", 3) != 0)
+ if (strncmp (s, "cYg", 3) == 0)
+ {
+ char *p = strchr(s+12,' '); // skip 'cYgxxxxxxxx <category>'
+ printf_unfiltered ("strace: %s", p ? p+1 : s+12);
+ }
+ else
warning (("%s"), s);
}
#ifdef __COPY_CONTEXT_SIZE
===================================================================
Regards
Ralf
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