[Resend because the previous one was rejected due to my bad SPF setting] On Thu, 2022-09-29 at 11:19 -0400, Chet Ramey wrote: > On 9/28/22 11:25 PM, Xi Ruoyao wrote: > > (Sorry for cross posting, but the topic is related to both side) > > > > In Bash-5.2 there is a change: > > > > "ff. Some fixes to how subshells modify $SHLVL." > > The single change affects pipelines for which bash optimizes out a > second > fork, so it doesn't decrement $SHLVL twice. It comes from this 2020 > report: > > https://lists.gnu.org/archive/html/help-bash/2020-10/msg00012.html > > (the ssh aspect of this report is a red herring). Hmm, it makes sense but I can't see how this affects autoconf test suite (I don't really understand M4). Could autoconf developers make a confirm that the test failures caused by SHLVL difference are not harmful, or provide a fix? -- Xi Ruoyao <xry111@xxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
