Debug fuzzer failures (#61062)

docker/test/fuzzer/run-fuzzer.sh

@@ -343,10 +343,9 @@ quit
         # which is confusing.
         task_exit_code=$fuzzer_exit_code
         echo "failure" > status.txt
-        { rg -ao "Found error:.*" fuzzer.log \
-            || rg -ao "Exception:.*" fuzzer.log \
-            || echo "Fuzzer failed ($fuzzer_exit_code). See the logs." ; } \
-            | tail -1 > description.txt
+        echo "Achtung!" > description.txt
+        echo "Fuzzer went wrong with error code: ($fuzzer_exit_code). Its process died somehow when the server stayed alive. The server log probably won't tell you much so try to find information in other files." >>description.txt
+        { rg -ao "Found error:.*" fuzzer.log || rg -ao "Exception:.*" fuzzer.log; } | tail -1 >>description.txt
     fi
 
     if test -f core.*; then

src/Parsers/ASTAlterQuery.cpp

@@ -634,6 +634,7 @@ void ASTAlterQuery::formatQueryImpl(const FormatSettings & settings, FormatState
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
     else if (alter_object == AlterObjectType::DATABASE && database)

src/Parsers/ASTCheckQuery.h

@@ -53,6 +53,7 @@ protected:
                 settings.ostr << '.';
             }
 
+            chassert(table);
             table->formatImpl(settings, state, frame);
         }
 

src/Parsers/ASTCreateIndexQuery.cpp

@@ -52,6 +52,7 @@ void ASTCreateIndexQuery::formatQueryImpl(const FormatSettings & settings, Forma
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 

src/Parsers/ASTCreateQuery.cpp

@@ -337,6 +337,7 @@ void ASTCreateQuery::formatQueryImpl(const FormatSettings & settings, FormatStat
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
 
         if (uuid != UUIDHelpers::Nil)
@@ -370,6 +371,7 @@ void ASTCreateQuery::formatQueryImpl(const FormatSettings & settings, FormatStat
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
 
         if (uuid != UUIDHelpers::Nil)

src/Parsers/ASTDeleteQuery.cpp

@@ -40,6 +40,7 @@ void ASTDeleteQuery::formatQueryImpl(const FormatSettings & settings, FormatStat
         settings.ostr << '.';
     }
 
+    chassert(table);
     table->formatImpl(settings, state, frame);
 
     formatOnCluster(settings);

src/Parsers/ASTDropIndexQuery.cpp

@@ -47,6 +47,7 @@ void ASTDropIndexQuery::formatQueryImpl(const FormatSettings & settings, FormatS
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 

src/Parsers/ASTDropQuery.cpp

@@ -76,6 +76,7 @@ void ASTDropQuery::formatQueryImpl(const FormatSettings & settings, FormatState
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 

src/Parsers/ASTInsertQuery.cpp

@@ -74,6 +74,7 @@ void ASTInsertQuery::formatImpl(const FormatSettings & settings, FormatState & s
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 

src/Parsers/ASTOptimizeQuery.cpp

@@ -15,6 +15,7 @@ void ASTOptimizeQuery::formatQueryImpl(const FormatSettings & settings, FormatSt
         settings.ostr << '.';
     }
 
+    chassert(table);
     table->formatImpl(settings, state, frame);
 
     formatOnCluster(settings);

src/Parsers/ASTQueryWithTableAndOutput.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <base/defines.h>
 #include <Parsers/IAST.h>
 #include <Parsers/ASTQueryWithOutput.h>
 #include <Core/UUID.h>
@@ -61,6 +62,7 @@ protected:
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 };

src/Parsers/ASTRenameQuery.h

@@ -127,6 +127,7 @@ protected:
                 settings.ostr << '.';
             }
 
+            chassert(it->from.table);
             it->from.table->formatImpl(settings, state, frame);
 
             settings.ostr << (settings.hilite ? hilite_keyword : "") << (exchange ? " AND " : " TO ") << (settings.hilite ? hilite_none : "");
@@ -137,6 +138,7 @@ protected:
                 settings.ostr << '.';
             }
 
+            chassert(it->to.table);
             it->to.table->formatImpl(settings, state, frame);
 
         }

src/Parsers/ASTSystemQuery.cpp

@@ -114,6 +114,7 @@ void ASTSystemQuery::formatImpl(const FormatSettings & settings, FormatState & s
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
         return settings.ostr;
     };

src/Parsers/ASTUndropQuery.cpp

@@ -36,6 +36,7 @@ void ASTUndropQuery::formatQueryImpl(const FormatSettings & settings, FormatStat
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
     }
 

src/Parsers/ASTWatchQuery.h

@@ -52,6 +52,7 @@ protected:
             settings.ostr << '.';
         }
 
+        chassert(table);
         table->formatImpl(settings, state, frame);
 
         if (is_watch_events)