repro for ninja issue #595

gistfile1.txt

Nicos-MacBook-Pro:repro thakis$ cat repro.py 
#!/usr/bin/env python

import ninja_syntax

n = ninja_syntax.Writer(open('build.ninja', 'w'))

n.rule(name='cxx',
       command='clang++ -c $in -o $out -MF $out.d -MMD',
       depfile='$out.d',
       deps='gcc')

def hname(i): return '%d.h' %i
def ccname(i): return '%d.cc' %i
def oname(i): return '%d.o' %i

N = 1000
incs = '\n'.join(['#include "%s"' % hname(i) for i in range(N)])

for i in range(N):
  h = hname(i)
  cc = ccname(i)
  open(h, 'w').write('extern int a%d;' % i)
  open(cc, 'w').write(incs + '\nint a%d = %d;' % (i, i))
  n.build(oname(i), 'cxx', inputs=cc)


Nicos-MacBook-Pro:repro thakis$ PYTHONPATH=../misc ./repro.py 
Nicos-MacBook-Pro:repro thakis$ (ninja -j 100&) ; ninja -j100&
[1] 23029
Nicos-MacBook-Pro:repro thakis$ ninja: warning: bad deps log signature or version; starting over
[1000/1000] clang++ -c 983.cc -o 983.o -MF 983.o.d -MMD
[1000/1000] clang++ -c 976.cc -o 976.o -MF 976.o.d -MMD

[1]+  Done                    ninja -j100
Nicos-MacBook-Pro:repro thakis$ ninja
[70/70] clang++ -c 960.cc -o 960.o -MF 960.o.d -MMD
Nicos-MacBook-Pro:repro thakis$ ninja
ninja: no work to do.
Nicos-MacBook-Pro:repro thakis$ (ninja -j 100&) ; ninja -j100&
[1] 27184
Nicos-MacBook-Pro:repro thakis$ ninja: no work to do.
ninja: no work to do.

[1]+  Done                    ninja -j100
Nicos-MacBook-Pro:repro thakis$ ninja
ninja: no work to do.
Nicos-MacBook-Pro:repro thakis$ rm *.o
Nicos-MacBook-Pro:repro thakis$ (ninja -j 100&) ; ninja -j100&
[1] 27195
[1000/1000] clang++ -c 974.cc -o 974.o -MF 974.o.d -MMD
[1000/1000] clang++ -c 931.cc -o 931.o -MF 931.o.d -MMD

[1]+  Done                    ninja -j100
Nicos-MacBook-Pro:repro thakis$ ninja
Recompacting log...
Segmentation fault: 11
Nicos-MacBook-Pro:repro thakis$ gdb ../ninja
GNU gdb 6.3.50-20050815 (Apple version gdb-1824) (Wed Feb  6 22:51:23 UTC 2013)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries ... done

(gdb) run
Starting program: /Users/thakis/src/ninja/ninja 
Reading symbols for shared libraries ++............................. done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x000000039d305718
DepsLog::Load (this=0x7fff5fbff918, path=@0x7fff5fbff9a8, state=0x7fff5fbff7d0, err=0x7fff5fbff988) at src/deps_log.cc:201
201          deps->nodes[i] = nodes_[deps_data[i]];
(gdb) bt
#0  DepsLog::Load (this=0x7fff5fbff918, path=@0x7fff5fbff9a8, state=0x7fff5fbff7d0, err=0x7fff5fbff988) at src/deps_log.cc:201
#1  0x00000001000016e8 in (anonymous namespace)::real_main () at /Users/thakis/src/ninja/src/ninja.cc:749
(gdb) The program is running.  Exit anyway? (y or n) y