[Bug c++/91505] [10 Regression] ICE in DECL_FUNCTION_CODE, at tree.h:3896

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91505

--- Comment #8 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
---
Author: rsandifo
Date: Wed Aug 21 13:59:31 2019
New Revision: 274799

URL: https://gcc.gnu.org/viewcvs?rev=274799&root=gcc&view=rev
Log:
[C++] Protect call to copy_attributes_to_builtin (PR91505)

copy_attributes_to_builtin only handles BUILT_IN_NORMAL, but C++ was
calling it immediately after the:

          if (DECL_BUILT_IN_CLASS (newdecl) == BUILT_IN_NORMAL)

block.  The corresponding C code calls it inside the block instead.

2019-08-21  Richard Sandiford  <richard.sandif...@arm.com>

gcc/cp/
        PR c++/91505
        * decl.c (duplicate_decls): Call copy_attributes_to_builtin inside
        the BUILT_IN_NORMAL block rather than afterward.

gcc/testsuite/
        PR c++/91505
        * g++.target/i386/crc32-4.C: New test.

Added:
    trunk/gcc/testsuite/g++.target/i386/crc32-4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog