<div dir="ltr">I tried to land a small fix before going on vacation at the end of the year, but I had to revert it because it broke on a few of the build bots, specifically clang-cmake-thumbv7-a15, clang-cmake-armv7-a15, and llvm-hexagon-elf.<div><br></div><div><a href="https://reviews.llvm.org/D41264">https://reviews.llvm.org/D41264</a><br></div><div><br></div><div>It seemed to work as expected on the others.</div><div><br></div><div>Unfortunately, the build logs don't give many clues.  The fix included a new test, and that test failed with an exit code of 1 but with no messages.  For example:</div><div>

<pre style="text-align:start;text-indent:0px;text-decoration-style:initial;text-decoration-color:initial"><span class="gmail-stdout" style=""><font size="1" style="color:black;font-family:"Courier New",courier,monotype,monospace;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;word-spacing:0px"><pre style="font-family:"Courier New",courier,monotype,monospace;color:rgb(0,0,0);font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><span class="gmail-stdout" style="font-family:"Courier New",courier,monotype,monospace;color:black">FAIL: LLVM :: DebugInfo/void-typedef.ll (14416 of 23113)
******************** TEST 'LLVM :: DebugInfo/void-typedef.ll' FAILED ********************
Script:
--
/local/buildbot/slaves/hexagon-build-02/llvm-hexagon-elf/llvm.obj/bin/llc /local/buildbot/slaves/hexagon-build-02/llvm-hexagon-elf/llvm.src/test/DebugInfo/void-typedef.ll -o - 2>&1 | /local/buildbot/slaves/hexagon-build-02/llvm-hexagon-elf/llvm.obj/bin/FileCheck /local/buildbot/slaves/hexagon-build-02/llvm-hexagon-elf/llvm.src/test/DebugInfo/void-typedef.ll
--
Exit Code: 1


********************</span></pre></font><pre style="text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">I would have expected FileCheck messages telling me how the output differed from expectations.  Since I don't see any of that, I'm assuming there was a problem with the command itself, but I'm not sure why that would happen on just a few buildbots.<br><br>I haven't been able to reproduce the failures locally on Linux or Windows, so I'm not sure how to go about debugging this.  Any tips?</font><font size="1"><font color="#000000" face="Courier New, courier, monotype, monospace"><br></font></font></pre></span></pre></div></div>