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Fix strange %define locations for default values.

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Reported by Akim Demaille at
<http://lists.gnu.org/archive/html/bug-bison/2007-12/msg00001.html>
and discussed again starting at
<http://lists.gnu.org/archive/html/bison-patches/2008-11/msg00102.html>.
* data/bison.m4 (b4_percent_define_default): Leave syncline blank
because location information is bogus.
Use angle brackets to delimit fake file name because square brackets
look like over-quoted m4.  Choose a better fake file name.
Use negative line numbers.
* src/muscle_tab.c (muscle_percent_define_default): Likewise.
* src/location.c (location_print): If line for a boundary is negative,
only print that boundary's file name.
* src/location.h: Document that.
* tests/skeletons.at (%define Boolean variables: invalid skeleton
defaults): Update output.
This commit is contained in:
Joel E. Denny
2009-04-03 03:13:36 -04:00
parent e021191bcf
commit 92822affc5
6 changed files with 68 additions and 30 deletions
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7
data/bison.m4
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@@ -680,10 +680,9 @@ m4_define([b4_percent_define_default],
[m4_ifndef([b4_percent_define(]$1[)],
[m4_define([b4_percent_define(]$1[)], [$2])dnl
m4_define([b4_percent_define_loc(]$1[)],
[[[[[Bison:b4_percent_define_default]:1.0]], [[[Bison:b4_percent_define_default]:1.0]]]])dnl
m4_define([b4_percent_define_syncline(]$1[)],
[[]b4_syncline(1, [["[Bison:b4_percent_define_default]"]])[
]])])])
[[[[<skeleton default value>:-1.-1]],
[[<skeleton default value>:-1.-1]]]])dnl
m4_define([b4_percent_define_syncline(]$1[)], [[]])])])
# b4_percent_define_check_values(VALUES)
# --------------------------------------