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Update comments for elog_start().

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Forgot I was going to do this as part of the previous patch ...
This commit is contained in:
Tom Lane 2013-01-13 18:50:48 -05:00
parent b853eb9718
commit 24dd0502a1
1 changed files with 5 additions and 4 deletions
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9
src/backend/utils/error/elog.c
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@ -1156,12 +1156,13 @@ getinternalerrposition(void)
* elog_start --- startup for old-style API
*
* All that we do here is stash the hidden filename/lineno/funcname
* arguments into a stack entry.
* arguments into a stack entry, along with the current value of errno.
*
* We need this to be separate from elog_finish because there's no other
* portable way to deal with inserting extra arguments into the elog call.
* (If macros with variable numbers of arguments were portable, it'd be
* easy, but they aren't.)
* C89-compliant way to deal with inserting extra arguments into the elog
* call. (When using C99's __VA_ARGS__, we could possibly merge this with
* elog_finish, but there doesn't seem to be a good way to save errno before
* evaluating the format arguments if we do that.)
*/
void
elog_start(const char *filename, int lineno, const char *funcname)