Tom Lane 9220b00e57 Tighten configure's test for __builtin_constant_p(). ... Commit 9fa6f00b1 assumed that __builtin_constant_p("string literal") is TRUE, if the compiler has that function at all. Buildfarm results show that Sun Studio 12, at least, breaks that assumption. Removing that usage would leave us with no mechanical check for a very fragile coding requirement, so instead teach configure to ignore __builtin_constant_p() if it doesn't behave that way. We could complicate matters by distinguishing three cases (no such function, vs does, vs doesn't work for string literals); but for now, that seems unnecessary because our other existing uses of this function are just fairly minor optimizations of non-returning elog/ereport. We can live without that on the small population of compilers that act this way. Discussion: https://postgr.es/m/22997.1513264066@sss.pgh.pa.us		2017-12-14 17:19:27 -05:00
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ac_func_accept_argtypes.m4
ax_prog_perl_modules.m4
ax_pthread.m4
c-compiler.m4	Tighten configure's test for __builtin_constant_p().	2017-12-14 17:19:27 -05:00
c-library.m4
config.guess
config.sub
docbook.m4	Convert documentation to DocBook XML	2017-11-23 09:44:28 -05:00
general.m4
install-sh
libtool.m4
Makefile
missing
perl.m4	MSVC: Test whether 32-bit Perl needs -D_USE_32BIT_TIME_T.	2017-12-08 18:06:05 -08:00
pkg.m4
prep_buildtree
programs.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
python.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
tcl.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00