Oh, thanks. Then I will disable the valgrind test. 2012/1/12 Simon Josefsson <si...@josefsson.org>: > Funda Wang <fundaw...@gmail.com> writes: > >> Hello, >> >> I'm currently build libidn-1.24 with glibc 2.14.1/valgrind 3.7 under >> Mageia cauldron. All builds fine, except that `make check' failed >> after building. Log here: >> >> PASS: tst_idna >> ==25261== Invalid read of size 4 >> ==25261== at 0x4E328E5: idna_to_ascii_4z (idna.c:526) >> >> i.e., idna2 and idna4 tests are failed. Is it a bug in libidn or >> valgrind? Regards. > > It is a valgrind issue, the line reads: > > size_t l = strlen (out) + 1 + strlen (buf) + 1; > > It is the glibc implementation of strlen that is optimized to read past > the buffer, and valgrind detects this. > > The normal way to deal with this is to write a valgrind suppressions > file. > > I'm leaning more and more to disable valgrind by default, it generates > false positives like this... perhaps it is sufficient that I run it, > and people can enable it with --enable-valgrind-tests if they want it. > > /Simon
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