c-vasnprintf: Fix link errors

[Bruno Haible]

c-vasnprintf has a long-standing bug: When I add a unit test for it, it leads
to link errors:

/usr/bin/ld: ../gllib/libgnu.a(c-vasnprintf.o): in function `c_vasnprintf':
/GNULIB/testdir2/build-64/gllib/../../gllib/vasnprintf.c:2246: undefined 
reference to `printf_parse'
/usr/bin/ld: /GNULIB/testdir2/build-64/gllib/../../gllib/vasnprintf.c:2257: 
undefined reference to `printf_fetchargs'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:3610: test-c-vasnprintf] Error 1

These two patches fix the bug and add the unit test. Will push once savannah
is up again.


2024-06-25  Bruno Haible  <bruno@clisp.org>

        c-vasnprintf: Add tests.
        * tests/test-c-vasnprintf.c: New file, based on tests/test-c-snprintf.c.
        * tests/test-c-vasnprintf.sh: New file, based on
        tests/test-c-snprintf.sh.
        * modules/c-vasnprintf-tests: New file.

2024-06-25  Bruno Haible  <bruno@clisp.org>

        c-vasnprintf: Fix link errors.
        * modules/c-vasnprintf (configure.ac): Ensure printf-args.c and
        printf-parse.c get compiled. Invoke gl_PREREQ_PRINTF_ARGS,
        gl_PREREQ_PRINTF_PARSE.

0001-c-vasnprintf-Fix-link-errors.patch
Description: Text Data

0002-c-vasnprintf-Add-tests.patch
Description: Text Data