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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/50790] ICE in copy_constant on divide by expression that evaluates to zero Date: Wed, 19 Oct 2011 17:55:00 -0000 [thread overview] Message-ID: <bug-50790-4-mfoWY1VRZq@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-50790-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50790 kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kargl at gcc dot gnu.org --- Comment #2 from kargl at gcc dot gnu.org 2011-10-19 17:54:31 UTC --- Here's a variation on the original code, which removes the print statement. One does not need to wade through gfortran IO structure. program test implicit none integer i i = 3 call foo (3 / (i - i)) end program test subroutine foo(j) j = j * 1 end subroutine foo The dump shows foo (integer(kind=4) & restrict j) { *j = NON_LVALUE_EXPR <*j>; } test () { integer(kind=4) i; i = 3; { static integer(kind=4) C.1729 = 3 / 0; foo (&C.1729); } } An equivalent C program compiles and gives a nearly identical dump, but dies with a Floating exception(?) troutmask:sgk[247] cat dw.c void foo (int *j) { *j = *j * 2; } int main() { static int i = 3; i = 3 / (i - i); foo(&i); return 0; } troutmask:sgk[248] ~/work/4x/bin/gcc -o z dw.c && ./z Floating exception (core dumped)
next prev parent reply other threads:[~2011-10-19 17:55 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-10-19 11:41 [Bug fortran/50790] New: " jonathan.hogg at stfc dot ac.uk 2011-10-19 15:24 ` [Bug middle-end/50790] " burnus at gcc dot gnu.org 2011-10-19 17:55 ` kargl at gcc dot gnu.org [this message] 2021-12-19 4:17 ` pinskia at gcc dot gnu.org
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