CVS Bison (2002-10-20) creates empty structures and initializers

[Paul Eggert]

The Sun ONE Studio 7 C compiler rejects 7 GLR-related test cases in
the CVS (2002-10-20) Bison test suite because they create empty
structures and/or initializers.  Here is a log of the verbose part of
the tests.  This looks related to Akim's recent changes to data/glr.c.

## --------------------------- ##
## GNU Bison 1.75a test suite. ##
## --------------------------- ##
61. calc.at:532: testing Calculator %glr-parser ...
calc.at:532: bison -o calc.c   calc.y
calc.at:532: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:532: exit code was 2, expected 0
61. calc.at:532: FAILED near `calc.at:532'

62. calc.at:534: testing Calculator %glr-parser --defines...
calc.at:534: bison -o calc.c  --defines calc.y
calc.at:534: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:534: exit code was 2, expected 0
62. calc.at:534: FAILED near `calc.at:534'

64. calc.at:536: testing Calculator %glr-parser --name-prefix=calc...
calc.at:536: bison -o calc.c  --name-prefix=calc calc.y
calc.at:536: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 126: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:536: exit code was 2, expected 0
64. calc.at:536: FAILED near `calc.at:536'

65. calc.at:537: testing Calculator %glr-parser --verbose...
calc.at:537: bison -o calc.c  --verbose calc.y
calc.at:537: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:537: exit code was 2, expected 0
65. calc.at:537: FAILED near `calc.at:537'

66. calc.at:538: testing Calculator %glr-parser --yacc...
calc.at:538: bison -o calc.c  --yacc calc.y
calc.at:538: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:538: exit code was 2, expected 0
66. calc.at:538: FAILED near `calc.at:538'

67. calc.at:539: testing Calculator %glr-parser %error-verbose...
calc.at:539: bison -o calc.c   calc.y
calc.at:539: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
cc: acomp failed for calc.c
calc.at:539: exit code was 2, expected 0
67. calc.at:539: FAILED near `calc.at:539'

70. calc.at:545: testing Calculator %glr-parser %debug...
calc.at:545: bison -o calc.c   calc.y
calc.at:545: $CC $CFLAGS $CPPFLAGS calc.c -o calc
stderr:
"calc.c", line 117: zero-sized struct/union
"calc.c", line 1370: warning: syntax error:  empty initializer
cc: acomp failed for calc.c
calc.at:545: exit code was 2, expected 0
70. calc.at:545: FAILED near `calc.at:545'
## ------------------------- ##
## testsuite.log is created. ##
## ------------------------- ##