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authorJoseph Myers <joseph@codesourcery.com>2015-10-09 21:02:19 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-10-09 21:02:19 +0000
commit06d97e5e6100641df2c379459e41b26bb4d7648b (patch)
tree786fcd34970d4f4c1e09039b4297e9aeea0262a2 /NEWS
parentfacdd9ea29ab94aac2b188ec3cc41f8733d769e0 (diff)
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Fix lrint, llrint, lround, llround missing exceptions for MIPS (bug 16399).
For 32-bit MIPS and some other systems, various of the lrint, llrint,
lround, llround functions can be missing exceptions on overflow
because casts do not (in current GCC) result in the proper
exceptions.  In the MIPS case there are two problems here: MIPS I code
generation uses an assembler macro that doesn't raise exceptions,
while the libgcc conversions of floating-point values to long long
also do not raise "invalid" on all overflow cases (and can raise
spurious "inexact").

This patch adds support in the generic code (only the functions for
which this problem has actually been seen) for forcing the "invalid"
exception in the problem cases, and enables that support for the
affected MIPS cases.

Tested for MIPS; also tested for x86_64 and x86 that installed
stripped shared libraries are unchanged by this patch.

	[BZ #16399]
	* sysdeps/generic/fix-fp-int-convert-overflow.h: New file.
	* sysdeps/ieee754/dbl-64/s_llrint.c: Include <fenv.h>, <limits.h>
	and <fix-fp-int-convert-overflow.h>.
	(__llrint) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/dbl-64/s_llround.c: Include <fenv.h>, <limits.h>
	and <fix-fp-int-convert-overflow.h>.
	(__llround) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/dbl-64/s_lrint.c: Include
	<fix-fp-int-convert-overflow.h>.
	(__lrint) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/dbl-64/s_lround.c: Include
	<fix-fp-int-convert-overflow.h>.
	(__lround) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/flt-32/s_llrintf.c: Include <fenv.h>, <limits.h>
	and <fix-fp-int-convert-overflow.h>.
	(__llrintf) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/flt-32/s_llroundf.c: Include <fenv.h>,
	<limits.h> and <fix-fp-int-convert-overflow.h>.
	(__llroundf) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/flt-32/s_lrintf.c: Include <fenv.h>, <limits.h>
	and <fix-fp-int-convert-overflow.h>.
	(__lrintf) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/ieee754/flt-32/s_lroundf.c: Include <fenv.h>, <limits.h>
	and <fix-fp-int-convert-overflow.h>.
	(__lroundf) [FE_INVALID]: Force FE_INVALID exception as needed if
	FIX_DBL_LLONG_CONVERT_OVERFLOW.
	* sysdeps/mips/mips32/fpu/fix-fp-int-convert-overflow.h: New file.
Diffstat (limited to 'NEWS')
-rw-r--r--NEWS20
1 files changed, 10 insertions, 10 deletions
diff --git a/NEWS b/NEWS
index 5c239f3988..32e4c64c07 100644
--- a/NEWS
+++ b/NEWS
@@ -10,16 +10,16 @@ Version 2.23
 * The following bugs are resolved with this release:
 
   887, 2542, 2543, 2558, 2898, 4404, 6803, 10432, 14341, 14912, 15367,
-  15384, 15786, 15918, 16141, 16296, 16347, 16415, 16517, 16519, 16520,
-  16521, 16620, 16734, 16973, 16985, 17118, 17243, 17244, 17250, 17441,
-  17787, 17886, 17887, 17905, 18084, 18086, 18240, 18265, 18370, 18421,
-  18480, 18525, 18595, 18589, 18610, 18618, 18647, 18661, 18674, 18675,
-  18681, 18724, 18757, 18778, 18781, 18787, 18789, 18790, 18795, 18796,
-  18803, 18820, 18823, 18824, 18825, 18857, 18863, 18870, 18872, 18873,
-  18875, 18887, 18921, 18951, 18952, 18956, 18961, 18966, 18967, 18969,
-  18970, 18977, 18980, 18981, 18985, 19003, 19012, 19016, 19018, 19032,
-  19046, 19049, 19050, 19059, 19071, 19076, 19077, 19078, 19079, 19085,
-  19086, 19088, 19094, 19095.
+  15384, 15786, 15918, 16141, 16296, 16347, 16399, 16415, 16517, 16519,
+  16520, 16521, 16620, 16734, 16973, 16985, 17118, 17243, 17244, 17250,
+  17441, 17787, 17886, 17887, 17905, 18084, 18086, 18240, 18265, 18370,
+  18421, 18480, 18525, 18595, 18589, 18610, 18618, 18647, 18661, 18674,
+  18675, 18681, 18724, 18757, 18778, 18781, 18787, 18789, 18790, 18795,
+  18796, 18803, 18820, 18823, 18824, 18825, 18857, 18863, 18870, 18872,
+  18873, 18875, 18887, 18921, 18951, 18952, 18956, 18961, 18966, 18967,
+  18969, 18970, 18977, 18980, 18981, 18985, 19003, 19012, 19016, 19018,
+  19032, 19046, 19049, 19050, 19059, 19071, 19076, 19077, 19078, 19079,
+  19085, 19086, 19088, 19094, 19095.
 
 * The obsolete header <regexp.h> has been removed.  Programs that require
   this header must be updated to use <regex.h> instead.