* Eric Blake wrote on Tue, Aug 24, 2010 at 01:17:38AM CEST: > * m4/stdbool.m4 (AC_HEADER_STDBOOL): Resync with autoconf. > * tests/test-stdbool.c: Enable more tests if using the system > <stdbool.h> instead of the gnulib replacement. > (main): Move xlc bug test to a runtime test for all compilers. > Reported by Anders Kaseorg.
On AIX 5.3, with $ xlc -qversion IBM XL C/C++ Enterprise Edition V8.0 for AIX Version: 08.00.0000.0025 the current git Autoconf AC_HEADER_STDBOOL test still provokes a failure: configure:3108: checking for stdbool.h that conforms to C99 configure:3193: cc -qlanglvl=extc89 -c -g conftest.c >&5 "conftest.c", line 46.16: 1506-196 (W) Initialization between types "_Bool" and "struct s*" is not allowed. "conftest.c", line 74.23: 1506-221 (S) Initializer must be a valid constant expression. with line 46 being | bool e = &s; and line 74 being | int xlcbug = 1 / (&(digs + 5)[-2 + (bool) 1] == &digs[4] ? 1 : 0); and with git gnulib and above Autoconf installed, $ gnulib-tool --with-tests --test stdbool still succeeds. Same with CC='xlc -qlanglvl=extc99'. Cheers, Ralf
