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Prevent parse stack overflow on long byte lists

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This commit is contained in:
rmoore1 2005-10-28 20:41:06 +00:00
parent 7e11c3be9f
commit ac7534b06c
1 changed files with 8 additions and 10 deletions
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18
source/compiler/aslcompiler.y
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@ -3,7 +3,7 @@
/******************************************************************************
*
* Module Name: aslcompiler.y - Bison input file (ASL grammar and actions)
* $Revision: 1.92 $
* $Revision: 1.93 $
*
*****************************************************************************/
@ -676,7 +676,6 @@ AslLocalAllocate (unsigned int Size);
%type <n> BufferTerm
%type <n> ByteList
%type <n> ByteListTail
%type <n> DWordList
%type <n> DWordListTail
@ -2402,17 +2401,16 @@ BufferTermData
| StringData {}
;
/*
* ByteList optimized (from ACPI spec) to force immediate reduction of each byte
* so that the parse stack doesn't overflow on very large lists (>4000 items)
*/
ByteList
: {$$ = NULL;}
| ByteConstExpr
ByteListTail {$$ = TrLinkPeerNode ($1,$2);}
;
ByteListTail
: {$$ = NULL;}
| ',' {$$ = NULL;} /* Allows a trailing comma at list end */
| ',' ByteConstExpr
ByteListTail {$$ = TrLinkPeerNode ($2,$3);}
| ByteList ',' /* Allows a trailing comma at list end */
| ByteList ','
ByteConstExpr {$$ = TrLinkPeerNode ($1,$3);}
;
DWordList