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Make *allocx() size class overflow behavior defined.

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Limit supported size and alignment to HUGE_MAXCLASS, which in turn is
now limited to be less than PTRDIFF_MAX.

This resolves #278 and #295.
This commit is contained in:
Jason Evans 2016-02-25 15:29:49 -08:00
parent 767d85061a
commit 0c516a00c4
14 changed files with 247 additions and 89 deletions
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4
include/jemalloc/internal/size_classes.sh
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@ -142,10 +142,10 @@ size_classes() {
# All remaining groups.
lg_grp=$((${lg_grp} + ${lg_g}))
while [ ${lg_grp} -lt ${ptr_bits} ] ; do
while [ ${lg_grp} -lt $((${ptr_bits} - 1)) ] ; do
sep_line
ndelta=1
if [ ${lg_grp} -eq $((${ptr_bits} - 1)) ] ; then
if [ ${lg_grp} -eq $((${ptr_bits} - 2)) ] ; then
ndelta_limit=$((${g} - 1))
else
ndelta_limit=${g}