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authorJoseph Myers <joseph@codesourcery.com>2017-10-19 17:32:20 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-10-19 17:32:20 +0000
commit37bb78cb8c1fb6b5813407c8856b1557359e6343 (patch)
tree7766ea22ce95621bed5d1427f04600de2340bb94 /ChangeLog
parentd74e6f6c0de55fc588b1ac09c88eb0fb8b8600af (diff)
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Install correct bits/long-double.h for MIPS64 (bug 22322).
Similar to bug 21987 for SPARC, MIPS64 wrongly installs the ldbl-128
version of bits/long-double.h, meaning incorrect results when using
headers installed from a 64-bit installation for a 32-bit build.  (I
haven't actually seen this cause build failures before its interaction
with bits/floatn.h did so - installed headers wrongly expecting
_Float128 to be available in a 32-bit configuration.)

This patch fixes the bug by moving the MIPS header to
sysdeps/mips/ieee754, which comes before sysdeps/ieee754/ldbl-128 in
the sysdeps directory ordering.  (bits/floatn.h will need a similar
fix - duplicating the ldbl-128 version for MIPS will suffice - for
headers from a 32-bit installation to be correct for 64-bit builds.)

Tested with build-many-glibcs.py (compilers build for
mips64-linux-gnu, where there was previously a libstdc++ build failure
as at
<https://sourceware.org/ml/libc-testresults/2017-q4/msg00130.html>).

	[BZ #22322]
	* sysdeps/mips/bits/long-double.h: Move to ....
	* sysdeps/mips/ieee754/bits/long-double.h: ... here.
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diff --git a/ChangeLog b/ChangeLog
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@@ -1,3 +1,9 @@
+2017-10-19  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #22322]
+	* sysdeps/mips/bits/long-double.h: Move to ....
+	* sysdeps/mips/ieee754/bits/long-double.h: ... here.
+
 2017-10-19  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* malloc/malloc.c (_int_free): Fix deadlock bug in consistency check.