[Bug gcov-profile/60897] New: Mangled function name in warning during -fprofile-use phase of Firefox build

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60897

            Bug ID: 60897
           Summary: Mangled function name in warning during -fprofile-use
                    phase of Firefox build
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org

During Firefox PGO build I noticed an mangled function name 
in a warning during -fprofile-use phase:

markus@x4 src % c++ -o Unified_cpp_js_src2.o -c  -I../../dist/system_wrappers
-include /var/tmp/mozilla-central/config/gcc_hidden.h -DENABLE_PARALLEL_JS
-DENABLE_BINARYDATA -DENABLE_SHARED_ARRAY_BUFFER -DEXPORT_JS_API
-DJS_HAS_CTYPES -DDLL_PREFIX='"lib"' -DDLL_SUFFIX='".so"' -DUSE_SYSTEM_MALLOC=1
-DENABLE_ASSEMBLER=1 -DENABLE_JIT=1 -DMOZ_GLUE_IN_PROGRAM -DNO_NSPR_10_SUPPORT
-DUSE_ZLIB -I/var/tmp/mozilla-central/js/src -I.
-I/usr/lib64/libffi-3.0.13/include 
-I/var/tmp/mozilla-central/js/src/../../mfbt/double-conversion 
-I../../dist/include  -I/usr/include/nspr        -fPIC   -DMOZILLA_CLIENT
-include ../../js/src/js-confdefs.h -MD -MP -MF .deps/Unified_cpp_js_src2.o.pp 
-Wall -Wpointer-arith -Woverloaded-virtual -Werror=return-type
-Werror=int-to-pointer-cast -Wtype-limits -Wempty-body -Werror=conversion-null
-Wsign-compare -Wno-invalid-offsetof -Wcast-align -fprofile-use
-fprofile-correction -ffunction-sections -fdata-sections -march=amdfam10
-fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -pipe  -DNDEBUG
-DTRIMMED -O3 -fomit-frame-pointer    
/var/tmp/moz-build-dir/js/src/Unified_cpp_js_src2.cpp
In file included from
/var/tmp/moz-build-dir/js/src/Unified_cpp_js_src2.cpp:106:0:
/var/tmp/mozilla-central/js/src/jit/BaselineIC.cpp: In function âbool
js::jit::_ZN2js3jitL26TryAttachNativeGetPropStubEP9JSContextN2JS6HandleIP8JSScriptEEPhPNS0_18ICGetProp_FallbackENS4_IPNS_12PropertyNameEEENS4_INS3_5ValueEEESF_Pb.isra.1329(JSContext*,
JS::HandleScript, jsbytecode*, js::jit::ICGetProp_Fallback*,
js::HandlePropertyName, JS::HandleValue, bool*)â:
/var/tmp/mozilla-central/js/src/jit/BaselineIC.cpp:6215:13: warning:
âdomProxyHasGenerationâ may be used uninitialized in this function
[-Wmaybe-uninitialized]
             if (domProxyHasGeneration) {
             ^
/var/tmp/mozilla-central/js/src/jit/BaselineIC.cpp:6245:20: warning:
âdomProxyShadowsResultâ may be used uninitialized in this function
[-Wmaybe-uninitialized]
     if (isDOMProxy && domProxyShadowsResult == Shadows) {
                    ^

markus@x4 src % c++filt
_ZN2js3jitL26TryAttachNativeGetPropStubEP9JSContextN2JS6HandleIP8JSScriptEEPhPNS0_18ICGetProp_FallbackENS4_IPNS_12PropertyNameEEENS4_INS3_5ValueEEESF_Pb.isra.1329
js::jit::TryAttachNativeGetPropStub(JSContext*, JS::Handle<JSScript*>, unsigned
char*, js::jit::ICGetProp_Fallback*, JS::Handle<js::PropertyName*>,
JS::Handle<JS::Value>, JS::Handle<JS::Value>, bool*) [clone .isra.1329]