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Revert "Add valgrind suppressions for wcsrtombs optimizations" 

This reverts commit d3bbc4b96a.

Per discussion, it's not desirable to add valgrind suppressions for
outside our own code base (e.g. glibc in this case), especially when
the suppressions may be platform-specific. There are better ways to
deal with that, e.g. by providing local suppressions.

Discussion: https://www.postgresql.org/message-id/flat/90ac0452-e907-e7a4-b3c8-15bd33780e62%402ndquadrant.com
This commit is contained in:
Tomas Vondra 2019-01-19 20:49:51 +01:00
parent 0301db623d
commit d6ef7fe75c
1 changed files with 0 additions and 36 deletions
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36
src/tools/valgrind.supp
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@ -212,39 +212,3 @@
Memcheck:Cond
fun:PyObject_Realloc
}
# wcsrtombs uses some clever optimizations internally, which to valgrind
# may look like access to uninitialized data. For example AVX2 instructions
# load data in 256-bit chunks, irrespectedly of wchar length. gconv does
# somethink similar by loading data in 32bit chunks and then shifting the
# data internally. Neither of those actually uses the uninitialized part
# of the buffer, as far as we know.
#
# https://www.postgresql.org/message-id/90ac0452-e907-e7a4-b3c8-15bd33780e62@2ndquadrant.com
{
wcsnlen_optimized
Memcheck:Cond
...
fun:wcsrtombs
fun:wcstombs
fun:wchar2char
}
{
wcsnlen_optimized_addr32
Memcheck:Addr32
...
fun:wcsrtombs
fun:wcstombs
fun:wchar2char
}
{
gconv_transform_internal
Memcheck:Cond
fun:__gconv_transform_internal_utf8
fun:wcsrtombs
fun:wcstombs
fun:wchar2char
}