[Bug c++/83902] [8 Regression] ice in decompose, at wide-int.h:932

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83902

--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Wed Jan 17 17:51:25 2018
New Revision: 256804

URL: https://gcc.gnu.org/viewcvs?rev=256804&root=gcc&view=rev
Log:
C++: Fix crash in warn_for_memset within templates (PR c++/83814)

gcc/c-family/ChangeLog:
        PR c++/83814
        * c-common.c (fold_for_warn): Move to c/c-fold.c and cp/expr.c.

gcc/c/ChangeLog:
        PR c++/83814
        * c-fold.c (fold_for_warn): Move from c-common.c, reducing to just
        the C part.

gcc/cp/ChangeLog:
        PR c++/83814
        * expr.c (fold_for_warn): Move from c-common.c, reducing to just
        the C++ part.  If processing a template, call
        fold_non_dependent_expr rather than fully folding.

gcc/testsuite/ChangeLog:
        PR c++/83814
        PR c++/83902
        * g++.dg/wrappers/pr83814.C: New test case.
        * g++.dg/wrappers/pr83902.C: New test case.


Added:
    trunk/gcc/testsuite/g++.dg/wrappers/pr83814.C
    trunk/gcc/testsuite/g++.dg/wrappers/pr83902.C
Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-fold.c
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/expr.c
    trunk/gcc/testsuite/ChangeLog