Revision 1.24 of ld/genscripts.sh introduced the following code:
if test -n "${BASH+set}"; then
source_em()
{
local current_script="$em_script"
em_script=$1
. $em_script
em_script=$current_script
}
fragment()
{
local lineno=$[${BASH_LINENO[0]} + 1] ###### <---
echo >> e${EMULATION_NAME}.c "#line $lineno \"$em_script\""
cat >> e${EMULATION_NAME}.c
}
This breaks on FreeBSD's /bin/sh with the following message:
.././ld/genscripts.sh: 403: Syntax error: Bad substitution
(Line 403 is marked with ###### <--- above.)
The issue here is that FreeBSD's /bin/sh simply does not recognize the
*syntax* of the array substitution, so the test for ${BASH} above
doesn't matter at all -- the shell aborts parsing the script at that
point.
So somehow, the test for using a bash should either be moved into a
configure-time substitution, or the array (and math, too?) substitution
should be replaced by something else that can be handled by any flavor
of /bin/sh.
FreeBSD's /bin/sh doesn't choke on the $[] math invoked (it simply doesn't
sustitute anything), yet I figure some other /bin/sh might also consider
that a syntax error. IMHO it's just riding on the safe side to use plain
old expr(1).
--
Summary: [regression] ld/genscripts.sh rev 1.24 breaks on
FreeBSD's /bin/sh
Product: binutils
Version: 2.18
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: j at uriah dot heep dot sax dot de
CC: bug-binutils at gnu dot org
GCC host triplet: freebsd-*-*
http://sourceware.org/bugzilla/show_bug.cgi?id=5215
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