http://llvm.org/bugs/show_bug.cgi?id=17066
Bug ID: 17066
Summary: [TSan] Automatically define the libstdc++ macros for
annotating happens before and after
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Driver
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Currently, TSan is very hard to use with a generic libstdc++. The reason is
that the _GLIBCXX_SYNCHRONIZATION_HAPPENS_{BEFORE,AFTER} macros are not defined
and thus the annotations in the library are not available to the race detector.
When using '-fsanitize=thread', Clang should directly provide definitions for
these standard library macros that enable appropriate annotations for TSan.
See http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html#debug.races for
the documentation of these macros.
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