pgsql: Drop support for MSVCRT's %I64 format strings.

Drop support for MSVCRT's %I64 format strings.

MSVCRT predated C99 and invented non-standard placeholders for 64-bit
numbers, and then later used them in standard macros when C99
<inttypes.h> arrived. The macros just use %lld etc when building with
UCRT, so there should be no way for our interposed sprintf.c code to
receive the pre-standard kind these days. Time to drop the code that
parses them.

That code was in fact already dead when commit 962da900 landed, as we'd
disclaimed MSVCRT support a couple of weeks earlier in commit 1758d424,
but patch development overlapped and the history of these macros hadn't
been investigated.

Reviewed-by: Peter Eisentraut <peter(at)eisentraut(dot)org>
Discussion: https://postgr.es/m/4d8b1a67-aab2-4429-b44b-f03988095939%40eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/7ab9b34614c2d6f69070a667787e0b091ecb72b1

Modified Files
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src/port/snprintf.c | 44 --------------------------------------------
1 file changed, 44 deletions(-)