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Re: /usr/bin/m4: internal error detected

On Dez 01 2017, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:

> This isn't a bug in m4 or anything architecture-specific, it's a regression
> that was introduced by an upstream change in glibc [1] and mainly affects
> qemu-user which we are using for m68k and sh4 [2].

It's a bug in qemu-linux-user, which ignores CLONE_VFORK, turning vfork
into fork.  This breaks the expected semantics of vfork (VM sharing and
blocking the child until exec).


Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

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