I’ve hit a weird Address Sanitizer error in Xcode 8 beta 4. Apparently
“odr-violation” means a symbol that’s been defined twice (which I would think
would already be a link error, but whatever.) The strange thing is that the
symbol in question is a C string literal, "\””, that simply appears inline in
expressions in two source files, which are compiled into the same target.
As far as I can tell this is a false warning; anyone have any idea about it?
I’ll probably set the environment variable to suppress it, and file a Radar…
—Jens
=================================================================
==98972==ERROR: AddressSanitizer: odr-violation (0x000100090cc0):
[1] size=2 '<string literal>’ /xxx/fleece/Tests/FleeceTests.cc:31:17
[2] size=2 '<string literal>’ /xxx/fleece/Tests/EncoderTests.cc:378:30
These globals were registered at these points:
[1]:
#0 0x10014191a in __asan_register_globals
(libclang_rt.asan_osx_dynamic.dylib+0xc91a)
#1 0x10002f54b in asan.module_ctor.2 (Test+0x10002f54b)
#2 0x7fff5fc13283 (<unknown module>)
#3 0x7fff5fc0f8bc (<unknown module>)
#4 0x7fff5fc0f742 (<unknown module>)
#5 0x7fff5fc0f9b2 (<unknown module>)
#6 0x7fff5fc020f0 (<unknown module>)
#7 0x7fff5fc05d97 (<unknown module>)
#8 0x7fff5fc01275 (<unknown module>)
#9 0x7fff5fc01035 (<unknown module>)
[2]:
#0 0x10014191a in __asan_register_globals
(libclang_rt.asan_osx_dynamic.dylib+0xc91a)
#1 0x1000038fb in asan.module_ctor (Test+0x1000038fb)
#2 0x7fff5fc13283 (<unknown module>)
#3 0x7fff5fc0f8bc (<unknown module>)
#4 0x7fff5fc0f742 (<unknown module>)
#5 0x7fff5fc0f9b2 (<unknown module>)
#6 0x7fff5fc020f0 (<unknown module>)
#7 0x7fff5fc05d97 (<unknown module>)
#8 0x7fff5fc01275 (<unknown module>)
#9 0x7fff5fc01035 (<unknown module>)
==98972==HINT: if you don't care about these errors you may set
ASAN_OPTIONS=detect_odr_violation=0
SUMMARY: AddressSanitizer: odr-violation: global '<string literal>' at
/xxx/fleece/Tests/FleeceTests.cc:31:17
==98972==ABORTING
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