Bug#674541: ruby1.8: segfaults when compiled with gcc-4.7
On Sun, May 27, 2012 at 11:11:10PM +0100, Steven Chamberlain wrote: I discovered other segfaults during 'test all'. An small, easily reproducible testcase is test/io/nonblock/test_flush.rb, which is fixed by compiling with the -fno-tree-dce compiler option. ruby-ffi's spec/ffi/function_spec.rb test also fails every time when ruby1.8 was built using gcc-4.7 without -fno-tree-dce, but is fixed by adding -fno-tree-dce when building ruby1.8. Just in case that helps anyone ... -- Colin Watson [cjwat...@ubuntu.com] -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#674541: ruby1.8: segfaults when compiled with gcc-4.7
Hi, I agree that building ruby1.8 with gcc-4.6 instead of gcc-4.7 (4.7.0-7), with no other changes, makes the segfaults go away in the small threads testcase. But it is also okay if built using gcc-4.7 with only the -fno-optimize-sibling-calls option added. This is on kfreebsd-i386 and 4-way SMP, but clearly it has affected Linux arches too (and even other distros). Regards, -- Steven Chamberlain ste...@pyro.eu.org -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#674541: ruby1.8: segfaults when compiled with gcc-4.7
On 27/05/12 20:19, Steven Chamberlain wrote: But it is also okay if built using gcc-4.7 with only the -fno-optimize-sibling-calls option added. That only took care of the small threads testcase I gave (verified with ~2000 runs). But there seem to be other, separate issues. I discovered other segfaults during 'test all'. An small, easily reproducible testcase is test/io/nonblock/test_flush.rb, which is fixed by compiling with the -fno-tree-dce compiler option. I've now tried gcc-4.7 4.7.0-9 from sid; I found that it fixes the small threads testcase (no need for -fno-optimize-sibling-calls any more); but the test_flush.rb testcase still always segfaults unless -fno-tree-dce is used. Regards, -- Steven Chamberlain ste...@pyro.eu.org -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
