David Emerson wrote on Thu, 04 Jun 2015:
I have just started using valgrind, and I was surprised that I got a
lot of errors, particularly in places that look like clean code. So
I whittled things down and created a test program. Here is the error
I am seeing (I've removed the procid, ==11180==):
Invalid read of size 16
at 0x401727: SYSTEM_INDEXBYTE$formal$INT64$BYTE$$INT64 (in
/Docs/fpc/test/vg_stringlist_const_error)
It's a false positive. You can create valgrind suppression files to
filter out such false positives. Someone once started a generic
suppression file for FPC
(http://svn.freepascal.org/svn/fpcbuild/trunk/install/unix/valgrind-fpc.supp
), but as you can see it's far from complete. You can even get
Valgrind to generate the suppression itself when it prints out errors:
http://valgrind.org/docs/manual/manual-core.html (search for
--gen-suppressions=yes).
Jonas
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