[Varnish] #1212: Vmod with HEADER argument given a STRING asserts the VCL compiler

[Varnish]

#1212: Vmod with HEADER argument given a STRING asserts the VCL compiler
----------------------+-------------------
 Reporter:  lkarsten  |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:
Component:  build     |    Version:  3.0.3
 Severity:  normal    |   Keywords:
----------------------+-------------------
 The header vmod defines append as follows:

     Function VOID append(HEADER,STRING_LIST)

 When giving it a string instead of a header the compiler doesn't handle
 this well and asserts:
 {{{
 lkarsten at immer:~$ /opt/varnish/sbin/varnishd -C -f assert.vcl
 Message from VCC-compiler:
 Assert error in VCC_FindSymbol(), vcc_symb.c line 120:
   Condition(t->tok == ID) not true.
 Running VCC-compiler failed, signal 6

 VCL compilation failed
 lkarsten at immer:~$
 }}}
 assert.vcl content:
 {{{
 import header;
 backend default { .host="127.0.0.1"; .port="8080"; }
 sub vcl_deliver {
     // incorrect, asserts the compiler
     header.append("Set-Cookie", "foo");
     // correct, works as expected
     header.append(resp.http.Set-Cookie, "foo");
 }
 }}}

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1212>
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