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<P>Hi All,<BR><BR>I was looking in to PR14569 [<A href="http://llvm.org/bugs/show_bug.cgi?id=14569">http://llvm.org/bugs/show_bug.cgi?id=14569</A>] and here are my findings.<BR><BR>GDB uses following attributes while printing function names, in order.<BR> 1. Linkage Name, if available, gdb demangles it and use it to print function name.<BR> 2. Name, if available, gdb uses it as it is without demangling it.<BR> 3. GDB tries to generage name of the function with other information available.<BR><BR>In case of clang, for compiler generated functions, [where HasDecl() is false], only Name attribute is being set in debug info.<BR><BR>So to fix bug on clang, we can do following.<BR><BR>1. Do not set both name and linkage_name attributes of just set linkage_name attribute. This makes testcase [gdb.cp/virtfunc.cpp] to pass but causes failures in 2 CodeGenCXX tests [debug-info-global-ctor-dtor.cpp and debug-info-thunk.cpp] which expect name attribute with mangled name of the function. I am also not sure, if other tools also depends on name attributes with mangled anme for compiler generated function.<BR><BR>2. Set both name and linkage_name attributes. This makes testcase [gdb.cp/virtfunc.cpp] to pass and does not have any side effect on existing clang/ llvm tests. But this will increase debug info size. I suggest to enable this fix if Full Debug Info option is enabled.<BR><BR>I have attached patch using second approach. Please let me know if this is fine.<BR><BR>Regards<BR>Dinesh Dwivedi<BR><BR><BR></P></BODY></HTML><img src='http://ext.samsung.net/mailcheck/SeenTimeChecker?do=7f7f42b98def448ef8326422210fb96a283c9beac69b30e36046a0d51bd790586a34984216ac66b0a34d950c0c4aaac5e1f93dc7001c940a07805447a154a46fcf878f9a26ce15a0' border=0 width=0 height=0 style='display:none'>