# Date: Tue, 04 Jul 2006 21:06:14 +0200 (MEST)

# From: Heiner Marxen <Heiner.Marxen@DrB.Insel.DE>

# Subject: conversion error

# To: bug-gawk@gnu.org

# Message-id: <200607041906.k64J6Eqa019360@drb9.drb.insel.de>

# 

# Hello,

# 

# The following awk script fails for gawk 3.1.4 and 3.1.5.

# Older versions did not do this, but I cannot say, how old they were.

# 

BEGIN {

    if( 0 ) {		#ok

	t = "8"

    }else {		#fails

	t = ""

	t = t "8"

    }

    printf("8  = %d\n", 0+t)	# ok without this line

    t = t "8"			# does not invalidate numeric interpretation

    printf("88 = %s\n", 0+t)

    ## The above prints "88 = 8" with gawk 3.1.4 and 3.1.5

}

# 

# 

# The following one-liner already exhibits the bug:

# 

# gawk 'BEGIN{t=""; t=t "8";printf("8=%d\n", 0+t);t=t "8";printf("88=%s\n", 0+t)}'

# 

# 

# Preliminary observation: under somewhat strange conditions a variable

# does retain its numeric interpretation although something is appended to it.

# -- 

# Heiner Marxen				http://www.drb.insel.de/~heiner/

#