crash on Buffer error in v6

[Hamper]

• Version: v6.0.0
• Platform: Linux notebook 4.5.2-calculate test: don't remove empty.txt on win32 #2 SMP PREEMPT Sat Apr 23 00:07:11 MSK 2016 x86_64 AMD A10-5750M APU with Radeon(tm) HD Graphics AuthenticAMD GNU/Linux
• Subsystem:

b = new Buffer([1,2])
b.lastIndexOf('123')

Result:

node: ../src/string_search.h:655: size_t node::SearchString(const Char*, size_t, const Char*, size_t, size_t, bool) [with Char = unsigned char; size_t = long unsigned int]: Assertion `haystack_length >= needle_length' failed.
[1]    6843 abort (core dumped)  node

In v5 last string just return -1.

[addaleax]

Thanks for reporting this! I’m looking into it.

[jasnell]

@Hamper ... it turns out that we had several issues to resolve in this bit of code. @addaleax did an amazing job of tracking those down and just landed the fix in master. Thank you for reporting the issue! (Note, parts of the issue actually impact v5 and v4 also so we'll be backporting those fixes to those versions).