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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - SBTarget::FindTypes does not find resolved function pointer types"
href="https://llvm.org/bugs/show_bug.cgi?id=31706">31706</a>
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</tr>
<tr>
<th>Summary</th>
<td>SBTarget::FindTypes does not find resolved function pointer types
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<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>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@lists.llvm.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alexandru.croitor@qt.io
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=17872" name="attach_17872" title="Example code which shows the issue regarding FindTypes">attachment 17872</a> <a href="attachment.cgi?id=17872&action=edit" title="Example code which shows the issue regarding FindTypes">[details]</a></span>
Example code which shows the issue regarding FindTypes
SBTarget::FindTypes does not find resolved function pointer types, which were
declared as function pointer typedefs.
Consider the code:
typedef struct _type {
int value;
} MyType;
typedef void (*FunctionPointer)(MyType*);
void function(MyType* t) {
(void) t;
}
int main(int argc, char* argv[]) {
MyType t;
FunctionPointer fp = &function;
fp(&t);
return 0;
}
Compile with clang++ -O0 -g ./main.cpp
Run lldb ./a.out and go into python script mode, then:
<span class="quote">>>> lldb.target.FindTypes("FunctionPointer").GetSize()</span >
1
<span class="quote">>>> lldb.target.FindTypes("void (*)(MyType*)").GetSize()</span >
0
<span class="quote">>>> lldb.target.FindTypes("void (*)(MyType *)").GetSize()</span >
0
But if I do:
<span class="quote">>>> for t in lldb.target.GetModuleAtIndex(0).GetTypes():</span >
... print t.GetName()
I get:
FunctionPointer
void (*)(MyType *)
MyType *
MyType
_type
void (MyType *)
main
char **
char *
char
int
which obviously contains "void (*)(MyType *)" which I have searched for
previously.
dwardump-ing the executable dSYM I can see DWARF data for the typedef, but not
for the underlying type of the typedef.
Is this a bug? Should FindTypes find resolved typedefs? Or is this intended
behavior?
(lldb) version
lldb-360.99.0
clang revision a41b64721d4be78870711cbb7b5af156a9e1f4ad
llvm revision 3c45ea423a9e3d27eaf77af0639a73e0c56d9a35</pre>
</div>
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