http://llvm.org/bugs/show_bug.cgi?id=6736
Summary: missing error detection in support for variable alias
attribute
Product: clang
Version: 2.6
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
There is and attribute to specify variable to be alias of another variable
__attribute__ ((alias ("variable2")));
This makes this variable alias to location variable2
It seems that the correctness of the symbol where the alias is created is not
checked in clang:
__attribute__ ((alias ("variable2 + 2")));
should cause a compiler error, but it passes, and creates a bogus reference to
a variable named "variable2 + 2".
At least newlib seems to use this broken syntax(because gcc can actually do the
calculation), which then goes thru configure check(because the error is not
detected when compiling) but fails on actual linking, which causes newlib to
not work when compiled with clang.
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