topic Two compiler crashes in Software Archive

Two compiler crashes

Wei_Pan — Thu, 16 Aug 2012 13:46:33 GMT

The following tests cause compiler crashes, although they should be incorrect uses of _Cilk_spwan. (The spec seemly does not exclude the first test).

icc version 12.1.4 (gcc version 4.6.0 compatibility)

(1)

// a.cpp

int foo(int i) {

return i;

}

int a = _Cilk_spawn foo(0);

int main() {

return a;

}

Error message:

(0): internal error: backend signals

compilation aborted for a.cpp (code 4)

(2)

// Found by my colleague Ben Langmuir

// b.cpp

int main() {

_Cilk_spawn 0;

return 0;

}

Error Message:

b.cpp(2): internal error: assertion failed at: "shared/cfe/edgcpfe/expr.c", line 28299

_Cilk_spawn 0;

compilation aborted for b.cpp (code 4)

Two compiler crashes

Barry_T_Intel — Thu, 16 Aug 2012 14:24:56 GMT

Thanks for reporting the problems. I've reproduced the problems and submitted them to the compiler group:

First program:
DPD200235415 - CILK: Compiler internal error reported by customer - backend signals

Second program:
DPD200235416 - CILK: Compiler internal error reported by customer - assertion failed

Are either of these holding you back?

- Barry

Two compiler crashes

Wei_Pan — Thu, 16 Aug 2012 14:55:44 GMT

No, since they should be invalid uses. Thanks!

Two compiler crashes

Barry_T_Intel — Thu, 16 Aug 2012 17:08:04 GMT

May our developer working on the GCC implementation of Cilk Plus include them in the tests he submits to GCC? They'd be included with the GCC source distribution and have to be under the GPL V2 license.

- Barry

Sure, go ahead!

Wei_Pan — Thu, 06 Sep 2012 01:53:45 GMT

Sure, go ahead!