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Commite3e3087

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Fix bogus code in contrib/ tsearch dictionary examples.
Both dict_int and dict_xsyn were blithely assuming that whatever memorypalloc gives back will be pre-zeroed. This would typically work forjust about long enough to run their regression tests, and no longer :-(.The pre-9.0 code in dict_xsyn was even lamer than that, as it wouldhappily give back a pointer to the result of palloc(0), encouragingits caller to access off the end of memory. Again, this would justbarely fail to fail as long as memory contained nothing but zeroes.Per a report from Rodrigo Hjort that code based on these examplesdidn't work reliably.
1 parenta0d2f05 commite3e3087

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2 files changed

+3
-1
lines changed

2 files changed

+3
-1
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‎contrib/dict_int/dict_int.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -72,7 +72,7 @@ dintdict_lexize(PG_FUNCTION_ARGS)
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DictInt*d= (DictInt*)PG_GETARG_POINTER(0);
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char*in= (char*)PG_GETARG_POINTER(1);
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char*txt=pnstrdup(in,PG_GETARG_INT32(2));
75-
TSLexeme*res=palloc(sizeof(TSLexeme)*2);
75+
TSLexeme*res=palloc0(sizeof(TSLexeme)*2);
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res[1].lexeme=NULL;
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if (PG_GETARG_INT32(2)>d->maxlen)

‎contrib/dict_xsyn/dict_xsyn.c

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -244,6 +244,8 @@ dxsyn_lexize(PG_FUNCTION_ARGS)
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if (pos!=value||d->keeporig)
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{
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res[nsyns].lexeme=pnstrdup(syn,end-syn);
247+
res[nsyns].nvariant=0;
248+
res[nsyns].flags=0;
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nsyns++;
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}
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