• seany (39/39) Jun 27 2014 Cosider this:
• H. S. Teoh via Digitalmars-d-learn (14/21) Jun 27 2014 [...]

"seany" <seany uni-bonn.de> writes:

Cosider this:

ulong regexChk(string haystack, string needle)
{

// haystack and needle are okey


     auto r = regex(needle, "g");
     auto m = match(haystack, r);

     // up to here is all fine

     return m.hit().count();
}

I want to count the numbers needles is mathced in haystack

But I get the error :



core.exception.AssertError std.regex(5587): Assertion failure
----------------
./niarbyl(_d_assertm+0x26) [0x4e6c26]
./niarbyl() [0x4f45be]
./niarbyl(pure nothrow  property  trusted immutable(char)[] 
std.regex.Captures!(immutable(char)[], 
ulong).Captures.hit()+0x61) [0x4c8af1]
./niarbyl(pure nothrow  property  trusted immutable(char)[] 
std.regex.__T10RegexMatchTAyaS273std5regex15ThompsonMatcherZ.Re
exMatch.hit()+0x59) 
[0x4c7089]
./niarbyl(ulong niarbyl.regexChk(immutable(char)[], 
immutable(char)[])+0x87) [0x4ac85f]
./niarbyl(void niarbyl.setGrammarApllicability()+0x3e3) [0x4accbb]
./niarbyl(_Dmain+0x95) [0x4acd9d]
./niarbyl(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll().void __lambda1()+0x18) [0x4eab9c]
./niarbyl(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate())+0x2a) 
[0x4eaaf6]
./niarbyl(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll()+0x30) [0x4eab5c]
./niarbyl(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate())+0x2a) 
[0x4eaaf6]
./niarbyl(_d_run_main+0x1a3) [0x4eaa77]
./niarbyl(main+0x17) [0x4dab0f]
/usr/lib/libc.so.6(__libc_start_main+0xf0) [0x7fe35eb43000]


I dont quite understand. I must be doing some rooki mistake. Help?

"H. S. Teoh via Digitalmars-d-learn" <digitalmars-d-learn puremagic.com> writes:

On Fri, Jun 27, 2014 at 03:59:47PM +0000, seany via Digitalmars-d-learn wrote:
[...]
 core.exception.AssertError std.regex(5587): Assertion failure
 ----------------
 ./niarbyl(_d_assertm+0x26) [0x4e6c26]
 ./niarbyl() [0x4f45be]
 ./niarbyl(pure nothrow  property  trusted immutable(char)[]
 std.regex.Captures!(immutable(char)[], ulong).Captures.hit()+0x61)
 [0x4c8af1]

[...]

Your code works fine on git HEAD, so it seems that this is a bug in
std.regex that has since been fixed. It may not do what you *want*,
though -- be aware that in the next release, match() will be deprecated
and replaced by matchFirst and matchAll, which are more precise in what
exactly you want to match.

In any case, assertions inside Phobos code is most likely a Phobos bug,
since it means that you've somehow managed to get it to go down a code
path that the author thought would never happen.


T

-- 
Let's eat some disquits while we format the biskettes.