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Incorporate strerror_r() into src/port/snprintf.c, too.

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This provides the features that used to exist in useful_strerror()
for users of strerror_r(), too.  Also, standardize on the GNU convention
that strerror_r returns a char pointer that may not be NULL.

I notice that libpq's win32.c contains a variant version of strerror_r
that probably ought to be folded into strerror.c.  But lacking a
Windows environment, I should leave that to somebody else.

Discussion: https://postgr.es/m/2975.1526862605@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2018-09-26 12:35:57 -04:00
parent 26e9d4d4ef
commit 758ce9b779
11 changed files with 99 additions and 83 deletions
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4
src/interfaces/libpq/fe-secure.c
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@ -233,7 +233,7 @@ pqsecure_raw_read(PGconn *conn, void *ptr, size_t len)
{
ssize_t n;
int result_errno = 0;
char sebuf[256];
char sebuf[PG_STRERROR_R_BUFLEN];
n = recv(conn->sock, ptr, len, 0);
@ -311,7 +311,7 @@ pqsecure_raw_write(PGconn *conn, const void *ptr, size_t len)
ssize_t n;
int flags = 0;
int result_errno = 0;
char sebuf[256];
char sebuf[PG_STRERROR_R_BUFLEN];
DECLARE_SIGPIPE_INFO(spinfo);