diff options
Diffstat (limited to 'sysdeps/generic/machine-gmon.h')
| -rw-r--r-- | sysdeps/generic/machine-gmon.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/generic/machine-gmon.h b/sysdeps/generic/machine-gmon.h index c4a2168322..3b63707eaf 100644 --- a/sysdeps/generic/machine-gmon.h +++ b/sysdeps/generic/machine-gmon.h @@ -22,6 +22,10 @@ void *__builtin_return_address (unsigned int N) returns the return address of the frame N frames up. */ +/* Be warned that GCC cannot usefully compile __builtin_return_address(N) + for N != 0 on all machines. In this case, you may have to write + your own version of _mcount(). */ + #if __GNUC__ < 2 #error "This file uses __builtin_return_address, a GCC 2 extension." #endif |