Builtin function __builtin___clear_cache is unavailable on GCC 4.2
A recent update to the RTS uses the GCC builtin function __builtin___clear_cache
. This function was introduced in GCC 4.3. In older GCCs that don't have this builtin function, it's treated as an undefined function, leading to a link-time error. My system has GCC 4.2.1, bundled with XCode 3.2.6.
The function is called from rts/sm/Storage.c
.
It seems that x86 architectures don't need a cache flush, so a possible fix is to do nothing on GCC < 4.3.6 on x86 architectures.
Trac metadata
Trac field | Value |
---|---|
Version | 7.7 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Runtime System |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | simonmar |
Operating system | |
Architecture |