https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112467
Bug ID: 112467
Summary: [14 Regression] libstdc++ fails to build on clang:
bits/stl_bvector.h:189:23: error: '__assume__'
attribute cannot be applied to a statement
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at gcc dot gnu.org
Target Milestone: ---
Build failure is probably introduced by r14-5260-ge39b3e02c27bd7 and fails on
clang-16 as:
// $ cat a.cc
#include <vector>
$ clang++ -c a.cc
In file included from a.cc:1:
In file included from /<<NIX>>/gcc-14.0.0/include/c++/14.0.0/vector:67:
/<<NIX>>/gcc-14.0.0/include/c++/14.0.0/bits/stl_bvector.h:189:23: error:
'__assume__' attribute cannot be applied to a statement
__attribute__ ((__assume__ (__ofst < unsigned(_S_word_bit))));
^ ~
1 error generated.
I think it happens because `clang` implements different `assume` attribute
compared to `gcc`: https://clang.llvm.org/docs/AttributeReference.html#assume
