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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - GCC warning in testb3.cpp testAbsArgWithEffectfulDoubleConversion"
href="https://bugs.webkit.org/show_bug.cgi?id=163869">163869</a>
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<th>Summary</th>
<td>GCC warning in testb3.cpp testAbsArgWithEffectfulDoubleConversion
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
</tr>
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<th>Version</th>
<td>Other
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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</tr>
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<th>Reporter</th>
<td>mcatanzaro@igalia.com
</td>
</tr>
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<th>CC</th>
<td>ggaren@apple.com, keith_miller@apple.com
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<p>
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<pre>Since r207696 "Expand Trunc in B3 to support Double to Float":
[284/3418] Building CXX object Source/...akeFiles/testb3.dir/__/b3/testb3.cpp.o
../../Source/JavaScriptCore/b3/testb3.cpp: In function ‘void {anonymous}::testAbsArgWithEffectfulDoubleConversion(float)’:
../../Source/JavaScriptCore/b3/testb3.cpp:3832:38: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
CHECK(isIdentical(effect, fabs(a)));
^
../../Source/JavaScriptCore/b3/testb3.cpp:100:16: note: in definition of macro ‘CHECK’
if (!!(x)) \
^
In file included from ../../Source/JavaScriptCore/b3/air/AirArg.h:31:0,
from ../../Source/JavaScriptCore/b3/air/AirCode.h:30,
from ../../Source/JavaScriptCore/b3/testb3.cpp:28:
../../Source/JavaScriptCore/b3/B3Common.h:67:13: note: candidate 1: bool JSC::B3::isIdentical(double, double)
inline bool isIdentical(double left, double right)
^~~~~~~~~~~
../../Source/JavaScriptCore/b3/B3Common.h:72:13: note: candidate 2: bool JSC::B3::isIdentical(float, float)
inline bool isIdentical(float left, float right)
^~~~~~~~~~~
../../Source/JavaScriptCore/b3/testb3.cpp: In function ‘void {anonymous}::testSqrtArgWithEffectfulDoubleConversion(float)’:
../../Source/JavaScriptCore/b3/testb3.cpp:4336:38: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
CHECK(isIdentical(effect, sqrt(a)));
^
../../Source/JavaScriptCore/b3/testb3.cpp:100:16: note: in definition of macro ‘CHECK’
if (!!(x)) \
^
In file included from ../../Source/JavaScriptCore/b3/air/AirArg.h:31:0,
from ../../Source/JavaScriptCore/b3/air/AirCode.h:30,
from ../../Source/JavaScriptCore/b3/testb3.cpp:28:
../../Source/JavaScriptCore/b3/B3Common.h:67:13: note: candidate 1: bool JSC::B3::isIdentical(double, double)
inline bool isIdentical(double left, double right)
^~~~~~~~~~~
../../Source/JavaScriptCore/b3/B3Common.h:72:13: note: candidate 2: bool JSC::B3::isIdentical(float, float)
inline bool isIdentical(float left, float right)
^~~~~~~~~~~</pre>
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