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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - After r303589, Assertion failed: (0 <= N && N < static_cast<int>(m_byteToColumn.size())), function byteToContainingColumn, file tools/clang/lib/Frontend/TextDiagnostic.cpp, line 281."
href="https://bugs.llvm.org/show_bug.cgi?id=33902">33902</a>
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<th>Summary</th>
<td>After r303589, Assertion failed: (0 <= N && N < static_cast<int>(m_byteToColumn.size())), function byteToContainingColumn, file tools/clang/lib/Frontend/TextDiagnostic.cpp, line 281.
</td>
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<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dimitry@andric.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>I recently imported llvm/clang trunk r308421 into FreeBSD 12-CURRENT, and
afterwards, I got a report [1] that building the graphics/libchamplain port
lead to an assertion failure:
Assertion failed: (0 <= N && N < static_cast<int>(m_byteToColumn.size())),
function byteToContainingColumn, file
/poudriere/jails/head-amd64/usr/src/contrib/llvm/tools/clang/lib/Frontend/TextDiagnostic.cpp,
line 281.
Bisection shows this assertion failure has been introduced by r303589.
Minimized test case:
#define a(b) #b
#define c(d) _Pragma(a(d))
#define e(f) c(GCC warning #f)
e() e()
Output of clang r303588:
testcase.c:4:1: warning: [-W#pragma-messages]
e() e()
^
testcase.c:3:14: note: expanded from macro 'e'
#define e(f) c(GCC warning #f)
^
testcase.c:2:14: note: expanded from macro 'c'
#define c(d) _Pragma(a(d))
^
<scratch space>:4:6: note: expanded from here
GCC warning ""
^
testcase.c:4:5: warning: [-W#pragma-messages]
e() e()
^
testcase.c:3:14: note: expanded from macro 'e'
#define e(f) c(GCC warning #f)
^
testcase.c:2:14: note: expanded from macro 'c'
#define c(d) _Pragma(a(d))
^
<scratch space>:5:6: note: expanded from here
GCC warning ""
^
2 warnings generated.
Output of clang r303589:
testcase.c:4:1: warning: [-W#pragma-messages]
e() e()
^
testcase.c:3:14: note: expanded from macro 'e'
#define e(f) c(GCC warning #f)
^
testcase.c:2:14: note: expanded from macro 'c'
#define c(d) _Pragma(a(d))
^
<scratch space>:4:6: note: expanded from here
GCC warning ""
^
testcase.c:4:5: warning: [-W#pragma-messages]
e() e()
^
testcase.c:3:14: note: expanded from macro 'e'
#define e(f) c(GCC warning #f)
^
testcase.c:2:14: note: expanded from macro 'c'
#define c(d) _Pragma(a(d))
^
<scratch space>:5:6: note: expanded from here
Assertion failed: (0 <= N && N < static_cast<int>(m_byteToColumn.size())),
function byteToContainingColumn, file
/home/dim/src/llvm-trunk/tools/clang/lib/Frontend/TextDiagnostic.cpp, line 281.
[1]
<a href="http://gohan2.ysv.freebsd.org/data/head-amd64-default-baseline/p446433_s321376/logs/errors/libchamplain-0.12.15.log">http://gohan2.ysv.freebsd.org/data/head-amd64-default-baseline/p446433_s321376/logs/errors/libchamplain-0.12.15.log</a></pre>
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