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authorJoseph Myers <joseph@codesourcery.com>2012-02-22 12:53:04 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-02-22 12:53:04 +0000
commitff3b3d82781300d48abec8a4a1600e7486663705 (patch)
treeb78f4d2ef348be8c78f1325bfc045058b2c7600c /CONFORMANCE
parentef0aab352c3ac1b0670211dac93c0802b2ef046d (diff)
downloadglibc-ff3b3d82781300d48abec8a4a1600e7486663705.tar.gz
Move __STDC_* predefined macros from features.h to stdc-predef.h.
Diffstat (limited to 'CONFORMANCE')
-rw-r--r--CONFORMANCE13
1 files changed, 6 insertions, 7 deletions
diff --git a/CONFORMANCE b/CONFORMANCE
index 8275aba26c..b23318ee9d 100644
--- a/CONFORMANCE
+++ b/CONFORMANCE
@@ -134,13 +134,12 @@ Compiler limitations
====================
The macros __STDC_IEC_559__, __STDC_IEC_559_COMPLEX__ and
-__STDC_ISO_10646__ are properly supposed to be defined by the
-compiler, and to be constant throughout the translation unit (before
-and after any library headers are included). However, they mainly
-relate to library features, and the necessary magic has yet to be
-implemented for GCC to predefine them to the correct values for the
-library in use, so glibc defines them in <features.h>. Programs that
-test them before including any standard headers may misbehave.
+__STDC_ISO_10646__ are properly supposed to be constant throughout the
+translation unit (before and after any library headers are included).
+However, they mainly relate to library features, and GCC only knows to
+preinclude <stdc-predef.h> to get their definitions in version 4.8 and
+later. Programs that test them before including any standard headers
+may misbehave with older compilers.
GCC doesn't support the optional imaginary types. Nor does it
understand the keyword _Complex before GCC 3.0. This has the