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Rewrite strnlen replacement implementation from 8a241792f9.

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The previous placement of the fallback implementation in libpgcommon
was problematic, because libpqport functions need strnlen
functionality.

Move replacement into libpgport. Provide strnlen() under its posix
name, instead of pg_strnlen(). Fix stupid configure bug, executing the
test only when compiled with threading support.

Author: Andres Freund
Discussion: https://postgr.es/m/E1e1gR2-0005fB-SI@gemulon.postgresql.org
This commit is contained in:
Andres Freund
2017-10-10 14:42:16 -07:00
parent fa5e119dc7
commit fffd651e83
10 changed files with 77 additions and 47 deletions
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3
src/backend/utils/mmgr/mcxt.c
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@@ -21,7 +21,6 @@
#include "postgres.h"
#include "common/string.h"
#include "miscadmin.h"
#include "utils/memdebug.h"
#include "utils/memutils.h"
@@ -1089,7 +1088,7 @@ pnstrdup(const char *in, Size len)
{
char *out;
len = pg_strnlen(in, len);
len = strnlen(in, len);
out = palloc(len + 1);
memcpy(out, in, len);