[Bug server/17373] fast tracepoints with local variables captured - reported as "<unavailable>"

["marc.dumais at ericsson dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17373

--- Comment #3 from Marc Dumais <marc.dumais at ericsson dot com> ---
I have reproduced the issue with gdb 7.2 : with this one the apparent problem
reported is a bit more specific/raw, compared to newer gdb:


(gdb) tfind
Found trace frame 0, tracepoint 3
#0  test (n=10000) at long1.c:9
9            printf("long1: count: %d\n",i);
(gdb) tdump
Data collected at tracepoint 3, trace frame 0:
i = 0
j = {1, 2, 3, 4}
n = 10000
i = 0
j = {1, 2, 3, 4}
(gdb) tfind
Found trace frame 1, tracepoint 2
10            sleep(1);
(gdb) tdump
Data collected at tracepoint 2, trace frame 1:
i = <error reading variable i (Cannot access memory at address 0x7fff5883e87c)>
j = <error reading variable j (Cannot access memory at address 0x7fff5883e860)>
n = <error reading variable n (Cannot access memory at address 0x7fff5883e85c)>
i = Cannot access memory at address 0x7fff5883e87c

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