http://llvm.org/bugs/show_bug.cgi?id=17141
Bug ID: 17141
Summary: Mangling of nullptr_t values do not follow ABI
Product: clang
Version: 3.2
Hardware: PC
OS: other
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
The C++ ABI document (available at
http://mentorembedded.github.io/cxx-abi/abi.html#mangle.expr-primary) specifies
a mangling for the nullptr literal.
The mangling that Clang produces is not consistent with the form specified by
the ABI; namely, "LDn0E" is generated by Clang instead of "LDnE".
ICC mangles using the ABI-specified form: "LDnE".
Note that nullptr_t is not an integer type. It is contrary to the specification
to apply the production for integer literals to a literal of type nullptr_t.
### SMALL SOURCE (nullptrValueMangle.cc):
typedef decltype(nullptr) NullPtrType;
template <NullPtrType> void foo();
template <> void foo<nullptr>() { }
### ACTUAL MANGLED NAME:
> clang++ -std='c++11' -c -o nullptrValueMangle.o nullptrValueMangle.cc && nm
> nullptrValueMangle.o
00000000 b .bss
00000000 d .data
00000000 t .text
00000000 T __Z3fooILDn0EEvv
### EXPECTED MANGLED NAME:
__Z3fooILDnEEvv
### clang++ -v:
> clang++ -v
clang version 3.2 (trunk 158227)
Target: i386-pc-cygwin
Thread model: posix
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