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Add fflush() before popen() calls; avoids any possible problem with

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double or out-of-sequence output with child process.
This commit is contained in:
Tom Lane 2003-11-14 17:30:41 +00:00
parent 0104fc11b9
commit 81e51ddc14
1 changed files with 15 additions and 9 deletions
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10
src/bin/initdb/initdb.c
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@ -42,7 +42,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $Header: /cvsroot/pgsql/src/bin/initdb/initdb.c,v 1.8 2003/11/14 17:19:35 tgl Exp $ * $Header: /cvsroot/pgsql/src/bin/initdb/initdb.c,v 1.9 2003/11/14 17:30:41 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -204,7 +204,9 @@ static void *xmalloc(size_t);
#define PG_CMD_OPEN \ #define PG_CMD_OPEN \
do { \ do { \
pg = popen(cmd,PG_BINARY_W); \ fflush(stdout); \
fflush(stderr); \
pg = popen(cmd, PG_BINARY_W); \
if (pg == NULL) \ if (pg == NULL) \
exit_nicely(); \ exit_nicely(); \
} while (0) } while (0)
@ -862,6 +864,10 @@ find_postgres(char *path)
snprintf(cmd, sizeof(cmd), "\"%s/postgres\" -V 2>%s", path, DEVNULL); snprintf(cmd, sizeof(cmd), "\"%s/postgres\" -V 2>%s", path, DEVNULL);
/* flush output buffers in case popen does not... */
fflush(stdout);
fflush(stderr);
if ((pgver = popen(cmd, "r")) == NULL) if ((pgver = popen(cmd, "r")) == NULL)
return FIND_EXEC_ERR; return FIND_EXEC_ERR;