[Bug-gnulib] Argp compilation failure with _GNU_SOURCE and optimization

[Soeren D. Schulze]

Hello,

I think this is quite self-explaining:

---snip---
.../gnulib$ for source in lib/argp-*.c; do echo "compiling $source..." >&2; 
LANG=C gcc -c -O3 -D_GNU_SOURCE $source; done
compiling lib/argp-ba.c...
compiling lib/argp-eexst.c...
compiling lib/argp-fmtstream.c...
In file included from lib/argp-namefrob.h:79,
                 from lib/argp-fmtstream.c:34:
lib/mempcpy.h:30: error: parse error before "__extension__"
In file included from lib/argp-namefrob.h:82,
                 from lib/argp-fmtstream.c:34:
lib/strndup.h:28: error: parse error before "__extension__"
lib/strndup.h:28: error: parse error before "n"
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: conflicting types for `__retval'
lib/strndup.h:28: error: previous declaration of `__retval'
lib/strndup.h:28: error: `__len' undeclared here (not in a function)
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: parse error before "const"
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before '}' token
compiling lib/argp-fs-xinl.c...
compiling lib/argp-help.c...
In file included from lib/argp-namefrob.h:79,
                 from lib/argp-help.c:52:
lib/mempcpy.h:30: error: parse error before "__extension__"
In file included from lib/argp-namefrob.h:82,
                 from lib/argp-help.c:52:
lib/strndup.h:28: error: parse error before "__extension__"
lib/strndup.h:28: error: parse error before "n"
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: conflicting types for `__retval'
lib/strndup.h:28: error: previous declaration of `__retval'
lib/strndup.h:28: error: `__len' undeclared here (not in a function)
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: parse error before "const"
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before '}' token
lib/argp-help.c:1673:4: warning: #warning No reasonable value to return
compiling lib/argp-parse.c...
lib/argp-parse.c:30:24: getopt_int.h: No such file or directory
In file included from lib/argp-namefrob.h:79,
                 from lib/argp-parse.c:43:
lib/mempcpy.h:30: error: parse error before "__extension__"
In file included from lib/argp-namefrob.h:82,
                 from lib/argp-parse.c:43:
lib/strndup.h:28: error: parse error before "__extension__"
lib/strndup.h:28: error: parse error before "n"
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: conflicting types for `__retval'
lib/strndup.h:28: error: previous declaration of `__retval'
lib/strndup.h:28: error: `__len' undeclared here (not in a function)
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before "if"
lib/strndup.h:28: error: parse error before "const"
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: warning: data definition has no type or storage class
lib/strndup.h:28: error: parse error before '}' token
lib/argp-parse.c:252: error: field `opt_data' has incomplete type
lib/argp-parse.c: In function `parser_init':
lib/argp-parse.c:464: error: variable `opt_data' has initializer but incomplete 
type
lib/argp-parse.c:464: error: `_GETOPT_DATA_INITIALIZER' undeclared (first use 
in this function)
lib/argp-parse.c:464: error: (Each undeclared identifier is reported only once
lib/argp-parse.c:464: error: for each function it appears in.)
lib/argp-parse.c:464: error: storage size of `opt_data' isn't known
compiling lib/argp-pv.c...
compiling lib/argp-pvh.c...
compiling lib/argp-xinl.c...
---snap---

My gnulib is the latest CVS checkout.

Omitting either -O3 or -D_GNU_SOURCE, the error does not occur.


Thanks in advance,

Soeren Schulze


PS:
Could you CC me?