Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In arm-linux-gnueabihf cross, after: | commit gcc-17-5106-g08c26561e4fe | Author: Jakub Jelinek | Date: Tue Oct 13 10:47:53 2026 +0200 | | tailc: Conservatively punt on some return type mismatches in tail call opt [PR127848] | | The first testcase is miscompiled on x86_64 and various other | bitint_ext_undef targets, where the padding bits are unspecified. | So, if callee returns unsigned _BitInt(15), only low 15 bits are | ... 61 lines of the commit log omitted. Produces 2 regressions: | | regressions.sum: | Running gcc:gcc.dg/dg.exp ... | FAIL: gcc.dg/pr127848-4.c scan-tree-dump optimized "= qux \\(\\); \\[tail call\\]" | FAIL: gcc.dg/pr127848-5.c scan-tree-dump optimized "= qux \\(\\); \\[tail call\\]" Used configuration : *CI config* tcwg_gnu_cross_check_gcc arm-linux-gnueabihf cross *configure and test flags:* --target arm-linux-gnueabihf --disable-multilib --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a We track this bug report under https://linaro.atlassian.net/browse/GNU-2069. (Require Linaro login) Please let us know if you have a fix. If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org mailing list. -----------------8<--------------------------8<--------------------------8<-------------------------- The information below contains the details of the failures, and the ways to reproduce a debug environment: You can find the failure logs in *.log.1.xz files in * http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10518/archive/artifacts/00-sumfiles/ The full lists of regressions and improvements as well as configure and make commands are in * http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10518/archive/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10518/archive/artifacts/sumfiles/xfails.xfail Current build : http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10518/archive/artifacts/ Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10517/archive/artifacts/ Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/08c26561e4fe2cb6a26f5217673ed72c22d33e5b/tcwg_gnu_cross_check_gcc/master-arm/reproduction_instructions.txt Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git