Hi! On Fri, 22 Jul 2011 15:48:29 +0200, [email protected] wrote: > The attached patch fixes stack switching in init-first.c when cthreads > are used (this is for code compiled with a cross-GCC 4.5.1 for > i586-pc-gnu; Debian GNU/Hurd uses an older GCC and is not affected.) > > With this compiler, ‘data[-1]’ does not point to the return address. > Thus, ‘switch_stacks’ would never be called, which breaks TLS. > > It seems to me that using ‘data[-1]’ here was fragile in the presence of > nested functions, inlining, and tail-call optimizations.
If for sure is ugly enough... :-) This patch is to be put on top of our TopGit t/init-first.c branch, I guess, which itself is not yet in the sourceware repository, I think? Grüße, Thomas
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