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SubjectRe: BUG (non-kernel), can hurt developers.
Andries.Brouwer@cwi.nl wrote:
> The routine handler must be very careful, since processing
> elsewhere was interrupted at some arbitrary point. POSIX
> has the concept of "safe function". If a signal inter­
> rupts an unsafe function, and handler calls an unsafe
> function, then the behavior is undefined. Safe functions
> are listed explicitly in the various standards. The POSIX
> 1003.1-2003 list is

<snip>

You may also want to mention the SUS async-safe list as well, since
there are some additional functions there.

Chris


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