Fix configure's snprintf test so it exposes HP-UX bug. Since commit e1d19c902, buildfarm member gharial has been failing with symptoms indicating that snprintf sometimes returns -1 for buffer overrun, even though it passes the added configure check. Some google research suggests that this happens only in limited cases, such as when the overrun happens partway through a %d item. Adjust the configure check to exercise it that way. Since I'm now feeling more paranoid than I was before, also make the test explicitly verify that the buffer doesn't get physically overrun.
Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/9bed827b18cc4f27fb7cd7c02ad301519eca6d29 Modified Files -------------- config/c-library.m4 | 11 ++++++++--- configure | 9 ++++++--- 2 files changed, 14 insertions(+), 6 deletions(-)
