Richard Guenther wrote:
> Of course testing for the fold makes sure we also test for the crash ...
> so yes, the idea was to also test for the fold. As the LTO testing
> harness does not support scanning dumps (sigh...) link tests are
> the only possibility right now.
OK, so what about the following version? This keeps not linking against
libm so it will fail if cabs is not folded. On the other hand, it will
provide a dummy implementation of sqrt to avoid failure simply because
sqrt is not expanded inline ...
Bye,
Ulrich
ChangeLog:
* testsuite/gcc.dg/lto/20110201-1_0.c: Provide dummy sqrt.
Index: gcc/testsuite/gcc.dg/lto/20110201-1_0.c
===================================================================
*** gcc/testsuite/gcc.dg/lto/20110201-1_0.c (revision 177409)
--- gcc/testsuite/gcc.dg/lto/20110201-1_0.c (working copy)
*************** foo (_Complex double x, int b)
*** 16,19 ****
--- 16,29 ----
x = 0;
return cabs(x);
}
+
+ /* We provide a dummy sqrt to avoid link failures on targets that do not
+ expand sqrt inline. Note that we do not link against libm in order
+ to ensure cabs is not satisfied by the library, but must be folded. */
+ double __attribute__((used))
+ sqrt (double x)
+ {
+ return x;
+ }
+
int main() { return 0; }
--
Dr. Ulrich Weigand
GNU Toolchain for Linux on System z and Cell BE
ulrich.weig...@de.ibm.com
