failure-debug

node-snappy|merged⚡ ⇒ gdb --args node failure.js
GNU gdb 6.3.50-20050815 (Apple version gdb-1824) (Wed Feb  6 22:51:23 UTC 2013)
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This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries ........ done

(gdb) run
Starting program: /usr/local/bin/node failure.js
Reading symbols for shared libraries +++++++...................................................................................................................................... done
Reading symbols for shared libraries . done
1
2

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x000000005fbff318
0x0000000100023b19 in node::StreamWrap::AfterWrite ()
(gdb) backtrace
#0  0x0000000100023b19 in node::StreamWrap::AfterWrite ()

failure.js

var snappy = require('./lib/snappy')
  , input = 'Foo bar!'

snappy.compress(input, function(err, compressed) {
  console.log('1')
})

snappy.compress(input, function(err, compressed) {
  console.log('2')
})

weird-snappy.js

var snappy = require('./lib/snappy')
  , input = 'Foo bar!'

setTimeout(function() {
  console.log('timeout!');
}, 1000)

snappy.compress(input, function(err, compressed) {

  console.log('compressed', compressed)

  if (err)
    throw err

  snappy.isValidCompressed(compressed, function(err, status) {
    if (err)
      throw err

    console.log(status)
  })

  snappy.decompress(compressed, null, function(err, expected) {
    if (err)
      throw err

    console.log(expected)
  })
})