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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - "Unexpected Expression" improvement for if-else"
href="https://llvm.org/bugs/show_bug.cgi?id=24945">24945</a>
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<th>Summary</th>
<td>"Unexpected Expression" improvement for if-else
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.6
</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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>rbarnes@umn.edu
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>I have the following program:
#include <iostream>
int main(){
int a;
std::cin>>a;
if(a>3){
std::cerr<<"Here"<<std::endl;
} else { //Line 8
std::cerr<<"There"<<std::endl;
} else { //Line 10
std::cerr<<"Uh oh"<<std::endl;
}
}
clang doesn't want to compile it and complains:
test.cpp:10:5: error: expected expression
} else {
^
1 error generated.
Of course, the problem here is that the if-else clause is actually an
if-else-else clause.
Not knowing much about how compilers are built, the error output here is a
little confusing to me: shouldn't an expression be expected on Line 8? Better
yet, perhaps the compiler could complain that an else-else is a no-no.</pre>
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