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Index: gdb-7.4.50.20111218/gdb/sparc-tdep.c
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===================================================================
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--- gdb-7.4.50.20111218.orig/gdb/sparc-tdep.c	2011-09-28 19:59:42.000000000 +0200
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+++ gdb-7.4.50.20111218/gdb/sparc-tdep.c	2011-12-19 01:25:29.294046199 +0100
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@@ -1316,6 +1316,7 @@ sparc32_store_return_value (struct type
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   if (sparc_floating_p (type) || sparc_complex_floating_p (type))
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     {
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       /* Floating return values.  */
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+      len = (len <= 8) ? len : 8;
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       memcpy (buf, valbuf, len);
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       regcache_cooked_write (regcache, SPARC_F0_REGNUM, buf);
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       if (len > 4)