# New Ticket Created by  Geoffrey Broadwell 
# Please include the string:  [perl #49972]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=49972 >


---
osname= linux
osvers= 2.6.22.10
arch=   i486-linux-gnu-thread-multi
cc=     cc
---
Flags:
    category=core
    severity=low
    ack=no
---
The error message from parrot when there is a spelling mismatch between
a function call and the function's actual declaration is accurate but
confusing:

*****
$ cat > foob.pir
.sub main :main
    foo()
.end

.sub foob
    print "Hello\n" 
.end

$ ./parrot foob.pir
Null PMC access in invoke()
current instr.: 'main' pc 7 (foob.pir:2)
*****

Of course, once you've seen this error message once or twice, you won't
soon forget the diagnosis.  For the sake of beginners however it would
be nice to add a hint to the message, for example:

  "Null PMC access in invoke(); misspelled sub name in function call?"

And a similar hint for method calls as well, I suppose.


-'f

---
Summary of my parrot 0.5.2 (r24923) configuration:
  configdate='Thu Jan 17 00:08:44 2008 GMT'
  Platform:
    osname=linux, archname=i486-linux-gnu-thread-multi
    jitcapable=1, jitarchname=i386-linux,
    jitosname=LINUX, jitcpuarch=i386
    execcapable=1
    perl=/usr/bin/perl
  Compiler:
    cc='cc', ccflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN  
-pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 
-DHASATTRIBUTE_CONST  -DHASATTRIBUTE_DEPRECATED  -DHASATTRIBUTE_FORMAT  
-DHASATTRIBUTE_MALLOC  -DHASATTRIBUTE_NONNULL  -DHASATTRIBUTE_NORETURN  
-DHASATTRIBUTE_PURE  -DHASATTRIBUTE_UNUSED  -DHASATTRIBUTE_WARN_UNUSED_RESULT  
-falign-functions=16 -mno-accumulate-outgoing-args -W -Wall -Waggregate-return 
-Wbad-function-cast -Wc++-compat -Wcast-align -Wcast-qual -Wchar-subscripts 
-Wcomment -Wdeclaration-after-statement -Wdisabled-optimization -Wextra 
-Wformat-nonliteral -Wformat-security -Wformat-y2k -Wimplicit 
-Wimplicit-function-declaration -Wimplicit-int -Wimport -Winit-self -Winline 
-Winvalid-pch -Wmain -Wmissing-braces -Wmissing-declarations 
-Wmissing-field-initializers -Wmissing-include-dirs -Wmissing-prototypes 
-Wnested-externs -Wno-endif-labels -Wno-shadow -Wno-unused -Wnonnull -Wpacked 
-Wparentheses -Wpointer-arith -Wreturn-!
 type -Wsequence-point -Wsign-compare -Wstrict-aliasing -Wstrict-aliasing=2 
-Wswitch -Wswitch-default -Wtrigraphs -Wundef -Wunknown-pragmas 
-Wvariadic-macros -Wwrite-strings',
  Linker and Libraries:
    ld='cc', ldflags=' -L/usr/local/lib',
    cc_ldflags='',
    libs='-ldl -lm -lpthread -lcrypt -lrt -lgmp -lreadline'
  Dynamic Linking:
    share_ext='.so', ld_share_flags='-shared -L/usr/local/lib -fPIC',
    load_ext='.so', ld_load_flags='-shared -L/usr/local/lib -fPIC'
  Types:
    iv=long, intvalsize=4, intsize=4, opcode_t=long, opcode_t_size=4,
    ptrsize=4, ptr_alignment=1 byteorder=1234, 
    nv=double, numvalsize=8, doublesize=8

---
Environment:
    HOME =/home/geoff
    LANG =en_US.UTF-8
    LANGUAGE  (unset)
    LD_LIBRARY_PATH  (unset)
    LOGDIR  (unset)
    PATH 
=/home/geoff/svk/parrot:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games
    SHELL =/bin/bash

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