https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59432
--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Uroš Bizjak from comment #7) > Please see [1] for the explanation of this problem. Your system doesn't > support .cfi directives and the referred patch doesn't handle this situation. > > Since EBX register is marked as fixed, there is nothing we can do. There is a proposal to allow EBX for allocation also in PIC mode [1]. The approach proposed in referred poposal would solve this PR (and many others, too). [1] https://gcc.gnu.org/ml/gcc/2014-07/msg00058.html