iterating using .irpc over a string such as "xxx xxx" is identical to
iterating over "xxxxxx". only if the first character is a space will irpc see
it: " xxx xxx"
will be processed as " xxxxxx". this bug surfaced when attempting to write a
macro to assemble character maps:
$ less chars.lst
1 ;# compile character map from data stored as "######
###"
2 ;# the above should compile to the two bytes 0xfc 0x03
3 .macro CHR16X24 row
4 .equ packed, 0
5 .irpc pixel, "\row"
6 .equ packed, packed << 1
7 .ifeqs "\pixel", "#"
8 .equ packed, packed | 1
9 .endif
10 .endr
11 .byte packed >> 8, packed & 0xff
12 .endm
13 0000 0003 CHR16X24 " ## "
14 0002 03FF CHR16X24 "### ####### "
15 0004 3FFF CHR16X24 "#### ########## "
16 0006 FFFF CHR16X24 "################"
DEFINED SYMBOLS
*ABS*:00000000 fake
NO UNDEFINED SYMBOLS
chars.lst (END)
if this is expected behavior, then the texinfo file should reflect that, instead
of stating: "For each character in VALUE, SYMBOL is set to the character, and
the sequence of statements is assembled." (under .irpc)
the spaces aren't getting preprocessed out; inserting an '.ascii "\row"'
statement into the above macro shows the correct string in all cases.
this may already be fixed in a later version, or on other platforms than Cygwin.
--
Summary: irpc skips all but first space in quoted string
Product: binutils
Version: 2.17
Status: NEW
Severity: normal
Priority: P2
Component: gas
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: jcomeau at unternet dot net
CC: bug-binutils at gnu dot org
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin
http://sourceware.org/bugzilla/show_bug.cgi?id=3856
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