[COMMITTERS] pgsql: Refine memory allocation in ICU conversions

Refine memory allocation in ICU conversions

The simple calculations done to estimate the size of the output buffers
for ucnv_fromUChars() and ucnv_toUChars() could overflow int32_t for
large strings.  To avoid that, go the long way and run the function
first without an output buffer to get the correct output buffer size
requirement.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/d8b3c81335600ad3487ca9bd642ef354d62919dc

Modified Files
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src/backend/utils/adt/pg_locale.c | 24 ++++++++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)