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Commit0fb6954

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Fix breakage of get_ps_display() in the PS_USE_NONE case.
Commit8c6d30f caused this function to fail to set *displenin the PS_USE_NONE code path. If the variable's previous valuehad been negative, that'd lead to a memory clobber at some callsites. We'd managed not to notice due to very thin test coverageof such configurations, but this appears to explain buildfarm memberlorikeet's recent struggles.Credit to Andrew Dunstan for spotting the problem. Back-patchto v13 where the bug was introduced.Discussion:https://postgr.es/m/136102.1648320427@sss.pgh.pa.us
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‎src/backend/utils/misc/ps_status.c

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@@ -443,6 +443,7 @@ get_ps_display(int *displen)
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returnps_buffer+ps_buffer_fixed_size;
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#else
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*displen=0;
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return"";
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#endif
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}

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