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From Daniel Shahaf <danie...@elego.de>
Subject Re: svn commit: r1508170 - in /subversion/trunk: build/ac-macros/svn-macros.m4 configure.ac subversion/include/svn_hash.h
Date Mon, 29 Jul 2013 19:06:23 GMT
danielsh@apache.org wrote on Mon, Jul 29, 2013 at 18:35:26 -0000:
> Author: danielsh
> Date: Mon Jul 29 18:35:25 2013
> New Revision: 1508170
> 
> URL: http://svn.apache.org/r1508170
> Log:
> Follow-up to r1507366: svn_hash_gets: compute the length of string literal
> keys (common case) at compile-time, without multiply-evaluating dynamically-
> computed keys.
> 
> Review by: philip
>            breser

Oddly enough, the optimization doesn't seem to kick in for me in
a '--enable-maintainer-mode' '-C' '--enable-optimize' build.  For some
reason my non-maintainer build fails.  Can someone try the following on
a release build, please, and report what value they get for klen?

% ./libtool --mode=execute gdb -silent -ex r -args subversion/svn/svn update
(gdb) b update_internal
(gdb) r
(gdb) b apr_hash_get
Breakpoint 2 at 0x7ffff6b25ac0: file tables/apr_hash.c, line 342.
(gdb) c
Continuing.

Breakpoint 2, apr_hash_get (ht=0x65c698, key=0x7ffff7bcf86c, klen=-1)
    at tables/apr_hash.c:342
342     {
(gdb) up
#1  0x00007ffff7bccd69 in update_internal (result_rev=0x7fffffffe260, 
    conflicted_paths=<value optimized out>, 
    local_abspath=0x6987e0 "/home/danielsh/src/svn/t1", 
    anchor_abspath=0x698a60 "/home/danielsh/src/svn/t1", 
    revision=0x7fffffffe170, depth=svn_depth_unknown, depth_is_sticky=0, 
    ignore_externals=0, allow_unver_obstructions=0, adds_as_modification=1, 
    timestamp_sleep=0x7fffffffe26c, notify_summary=1, ctx=0x65d810, 
    pool=0x6986a8) at subversion/libsvn_client/update.c:240
240                           ? svn_hash_gets(ctx->config, SVN_CONFIG_CATEGORY_CONFIG)
(gdb) 

I would expect 6, since SVN_CONFIG_CATEGORY_CONFIG is known at
compile-time.

Thanks,

Daniel

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