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authorFlorian Weimer <fweimer@redhat.com>2023-01-25 08:01:00 +0100
committerFlorian Weimer <fweimer@redhat.com>2023-01-25 08:01:00 +0100
commit0d50f477f47ba637b54fb03ac48d769ec4543e8d (patch)
tree598fbe050d8441a6152237d5442d2506ed846bf0 /posix/tst-getopt-cancel.c
parent0674613e6652a46063756f162bdef88622b3bdbd (diff)
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stdio-common: Handle -1 buffer size in __sprintf_chk & co (bug 30039)
This shows up as an assertion failure when sprintf is called with a specifier like "%.8g" and libquadmath is linked in: Fatal glibc error: printf_buffer_as_file.c:31 (__printf_buffer_as_file_commit): assertion failed: file->stream._IO_write_ptr <= file->next->write_end Fix this by detecting pointer wraparound in __vsprintf_internal and saturate the addition to the end of the address space instead. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'posix/tst-getopt-cancel.c')
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