https://bugs.exim.org/show_bug.cgi?id=2094
Zoltan Herczeg <hzmester@???> changed:
What |Removed |Added
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CC| |hzmester@???
--- Comment #1 from Zoltan Herczeg <hzmester@???> ---
I think this is a known side effect of the SSE2 optimization in PCRE-JIT. The
optimized algorithm reads aligned 16 byte data packets which might cross the
boundary of the input (subject) buffer, and valgrind reports this as an error.
However this is a valid operation, since the read is aligned, so it can never
cause a memory read error. Of course the algorithm ignores data outside of the
input buffer boundaries.
To confirm this please change the following line in pcre_jit_compile.c:
if (sljit_x86_is_sse2_available())
to:
if (false)
and check whether the error disappears.
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