[Valgrind-users] Suppression bug with Memcheck:Value16

[Leonard m. <spa...@ya...>]

Been valgrinding an large app I have here and just hit a problem.
valgrind gave me a bunch of these down in the NVidia drivers:

==2305== Thread 2:
==2305== Use of uninitialised value of size 16
==2305==    at 0x40D64260: __nvsym04804 (in
/usr/lib/libGLcore.so.1.0.3123)

Deciding to check my code later, I added:

{
   nvidia_1.0_3123_008
   Memcheck:Value16
   fun:__nvsym04804
}

to my suppressions file.  But valgrind refused to parse this.

Figuring I had the supression rule wrong, I reran with 
--gen-suppressions=yes.  However, when valgrind hit this event in
the code, it crashed and said:

==2336== Thread 2:
==2336== Use of uninitialised value of size 16
==2336==    at 0x40D64260: __nvsym04804 (in
/usr/lib/libGLcore.so.1.0.3123)
==2336== 
==2336== ---- Print suppression ? --- [Return/N/n/Y/y/C/c] ---- 
Memcheck: the `impossible' happened:
   unexpected size for Value
Basic block ctr is approximately 104700000

sched status:
...

Any ideas?

Thanks,

Randall


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