> -----Message d'origine----- > De : fpc-pascal-boun...@lists.freepascal.org [mailto:fpc-pascal- > boun...@lists.freepascal.org] De la part de Jonas Maebe > Envoyé : jeudi 4 juin 2015 19:51 > À : FPC-Pascal users discussions > Objet : Re: [fpc-pascal] valgrind: "invalid read" > > > 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).
Hi Jonas, I am not sure I understand why it is a false positive: The read size is 16, at offset 16, which make it read up to position 32, while only 30 byte were allocated... What is wrong in my analysis above? Pierre _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
