[Bug target/29487] Shared libstdc++ fails to link

[amylaar at gcc dot gnu dot org]

------- Comment #23 from amylaar at gcc dot gnu dot org  2007-02-05 18:34 -------
(In reply to comment #20)
> I suppose PR29323 was found by inspection of GCC code rather than a real-world
> testcase so the option to revert that patch on the 4.1 branch looks appealing.
> 
> (CCed Joern to clarify)

It wasn't as clear-cut as this.  I was investigating a bug which later turned
out to be a duplicate of PR27781.  I was searching for the point where the
invalid analysis was made, and TREE_NOTHROW was more easily visible than
constness (as in ECF_CONST).  So, I was working on a real testcase that was
affected manifestly by PR27781, and latently by PR29323, i.e. the function
was incorrectly tagged as nothrow, although that incorrect piece of analysis
had no effect in the original testcase.  (Omitting the function call
altogether, as was prompted by the invalid constness analysis, had an
oversable effect, though - which was the bug I was really working on).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29487