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<body><span class="vcard"><a class="email" href="mailto:octoploid@yandex.com" title="octoploid <octoploid@yandex.com>"> <span class="fn">octoploid</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Right-shift operator returns incorrect and inconsistent values"
href="http://llvm.org/bugs/show_bug.cgi?id=19500">bug 19500</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>octoploid@yandex.com
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Right-shift operator returns incorrect and inconsistent values"
href="http://llvm.org/bugs/show_bug.cgi?id=19500#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Right-shift operator returns incorrect and inconsistent values"
href="http://llvm.org/bugs/show_bug.cgi?id=19500">bug 19500</a>
from <span class="vcard"><a class="email" href="mailto:octoploid@yandex.com" title="octoploid <octoploid@yandex.com>"> <span class="fn">octoploid</span></a>
</span></b>
<pre>markus@x4 tmp % clang++ -fsanitize=undefined -O2 shift.cpp
markus@x4 tmp % ./a.out
shift.cpp:26:19: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
shift.cpp:28:65: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.9.0/include/g++-v4/bits/ios_base.h:96:24:
runtime error: load of value 4294967221, which is not a valid value for type
'std::_Ios_Fmtflags'
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.9.0/include/g++-v4/bits/ios_base.h:76:67:
runtime error: load of value 4294967221, which is not a valid value for type
'std::_Ios_Fmtflags'
shift.cpp:28:189: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
Main: 48271 >> 1291394886 = 140734713298048; rx=4341504=0x1002=long:4341504;
(lx>>ix)=long:140734713298048
shift.cpp:16:19: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
shift.cpp:18:73: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
shift.cpp:18:197: runtime error: shift exponent 1291394886 is too large for
64-bit type 'long'
Test: 48271 >> 1291394886; (lx>>ix)=754; rx=754=0x2f2=long:754;
(lx>>ix)=long:754
lx (8 bits) = 48271 = = bc8f
ix (4 bits) = 1291394886 = = 4cf91f46</pre>
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