https://sourceware.org/bugzilla/show_bug.cgi?id=19801
Bug ID: 19801
Summary: c++filt cannot demangle
_ZNSt17_Function_handlerIFSt4pairImjEjEZN5folly12addBe
nchmarkI3$_0EENSt9enable_ifIXeqsr5boost14function_type
s14function_arityIDTadsrT_onclEEE5valueLi2EEvE4typeEPK
cSC_OS7_EUljE_E9_M_invokeERKSt9_Any_dataj
Product: binutils
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: twoh at fb dot com
Target Milestone: ---
c++filt cannot demangle
_ZNSt17_Function_handlerIFSt4pairImjEjEZN5folly12addBenchmarkI3$_0EENSt9enable_ifIXeqsr5boost14function_types14function_arityIDTadsrT_onclEEE5valueLi2EEvE4typeEPKcSC_OS7_EUljE_E9_M_invokeERKSt9_Any_dataj
The demangler fails when it encounters expression "srT_onclE". The reason is
that it applies a wrong rule to demangle expression. Comments in line 3095 of
libiberty/cp-demangle.c (2.26 release) says
<expression> ::= sr <type> <unqualified-name>
is the rule, and this is implemented in line 3110-3124. However, if you see
Itanium C++
ABI(http://mentorembedded.github.io/cxx-abi/abi.html#mangle.expression), the
actual rule is
<expression> ::= sr <type> <base-unresolved-name>
and 'base-unresolved-name' has different rules with 'unqualified-name'.
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