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Hi Mark, On Feb 15 18:23, Mark Geisert wrote: > This follows up from my msg re GMP-ECM failing its 'make check' on the main > list https://cygwin.com/ml/cygwin/2016-02/msg00147.html . > > There's an error that ought to be reported during dynamic linking if the > linked-to address is too far from the relocation site. However the error is > not reported if __OPTIMIZE__ was #defined when building the Cygwin DLL. I > can't see why optimization settings should affect this, > so I suggest: > > /oss/src/winsup/cygwin diff -u pseudo-reloc.cc.safe pseudo-reloc.cc > --- pseudo-reloc.cc.safe 2016-01-26 20:08:06.000000000 -0800 > +++ pseudo-reloc.cc 2016-02-15 17:54:20.475963800 -0800 > @@ -342,7 +342,7 @@ > __write_memory ((void *) reloc_target, &reldata, 2); > break; > case 32: > -#if defined (__CYGWIN__) && defined (__x86_64__) && !defined (__OPTIMIZE__) > +#if defined (__CYGWIN__) && defined (__x86_64__) > if (reldata > (ptrdiff_t) __INT32_MAX__ > || reldata < -((ptrdiff_t) __INT32_MAX__) - 1) > __report_error ("Invalid relocation. Offset %p at address %p " > > If the truncation is not reported here, which kills the program with a > Cygwin runtime error, you get hard to diagnose SIGSEGVs at some later time > when the app tries to call a function at an address relocated off in the > weeds somewhere. Patch is ok, but it doesn't apply cleanly. Can you please send the patch as created by `git format-patch' or at least in git diff format? Thanks, Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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