Exceptions in a thread may have their backtrace missing. For example, the error ==22241== Conditional jump or move depends on uninitialised value(s) ==22241== at 0x1B905D32: memcmp (mac_replace_strmem.c:325) ==22241== by 0x8048636: func (zz36.c:23) ==22241== by 0x8048831: main (zz36.c:77) Is reported as ==22241== Thread 2: ==22241== Conditional jump or move depends on uninitialised value(s) ==22241== at 0x1B905D32: memcmp (mac_replace_strmem.c:325) [later] A recent checking has fixed this
Created attachment 9247 [details] shell script to demonstrate the problem
As you stated, this is now fixed.