Re: No 'out of memory' message on Windows?

Should anyone be interested, the error appears to be on line 108 of vmem.h (5.8.8 sources):

Disassembly of Function perl58.dll!VMem::LinkBlock (0x280EED69)

  ; protected:
  ; #ifdef _USE_LINKED_LIST
  ;     void LinkBlock(PMEMORY_BLOCK_HEADER ptr)
  ;     {
  0x280EED69: PUSH     EBP                                
  0x280EED6A: MOV      EBP,ESP                            
  0x280EED6C: PUSH     ECX                                
  0x280EED6D: PUSH     ECX                                
  0x280EED6E: MOV      DWORD PTR [EBP-0x8],ECX            ; VAR:this <
+VMem *>
  ; vmem.h - Line 106
  ;     PMEMORY_BLOCK_HEADER next = m_Dummy.pNext;
  0x280EED71: MOV      EAX,DWORD PTR [EBP-0x8]            ; VAR:this <
+VMem *>
  0x280EED74: MOV      EAX,DWORD PTR [EAX+0x4]            
  0x280EED77: MOV      DWORD PTR [EBP-0x4],EAX            ; VAR:next <
+_MemoryBlockHeader *>
  ; vmem.h - Line 107
  ;     m_Dummy.pNext = ptr;
  0x280EED7A: MOV      EAX,DWORD PTR [EBP-0x8]            ; VAR:this <
+VMem *>
  0x280EED7D: MOV      ECX,DWORD PTR [EBP+0x8]            ; ARG:ptr <_
+MemoryBlockHeader *>
  0x280EED80: MOV      DWORD PTR [EAX+0x4],ECX            
  ; vmem.h - Line 108
  ;     ptr->pPrev = &m_Dummy;
  0x280EED83: MOV      EAX,DWORD PTR [EBP-0x8]            ; VAR:this <
+VMem *>
  0x280EED86: ADD      EAX,0x4                            
  0x280EED89: MOV      ECX,DWORD PTR [EBP+0x8]            ; ARG:ptr <_
+MemoryBlockHeader *>

### TRAP OCCURS HERE ###### TRAP OCCURS HERE ###### TRAP OCCURS HERE #
+##

+ 0x280EED8C: MOV      DWORD PTR [ECX+0x4],EAX           

### TRAP OCCURS HERE ###### TRAP OCCURS HERE ###### TRAP OCCURS HERE #
+##
 
  ; vmem.h - Line 109
  ;     ptr->pNext = next;
  0x280EED8F: MOV      EAX,DWORD PTR [EBP+0x8]            ; ARG:ptr <_
+MemoryBlockHeader *>
  0x280EED92: MOV      ECX,DWORD PTR [EBP-0x4]            ; VAR:next <
+_MemoryBlockHeader *>
  0x280EED95: MOV      DWORD PTR [EAX],ECX                
  ; vmem.h - Line 110
  ;         ptr->owner = this;
  0x280EED97: MOV      EAX,DWORD PTR [EBP+0x8]            ; ARG:ptr <_
+MemoryBlockHeader *>
  0x280EED9A: MOV      ECX,DWORD PTR [EBP-0x8]            ; VAR:this <
+VMem *>
  0x280EED9D: MOV      DWORD PTR [EAX+0x8],ECX            
  ; vmem.h - Line 111
  ;     next->pPrev = ptr;
  0x280EEDA0: MOV      EAX,DWORD PTR [EBP-0x4]            ; VAR:next <
+_MemoryBlockHeader *>
  0x280EEDA3: MOV      ECX,DWORD PTR [EBP+0x8]            ; ARG:ptr <_
+MemoryBlockHeader *>
  0x280EEDA6: MOV      DWORD PTR [EAX+0x4],ECX            
  ; vmem.h - Line 112
  ;     }
  0x280EEDA9: LEAVE                                       
  0x280EEDAA: RET      0x4                                
  ;*******************************************************************
+*************
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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

Comment on Re: No 'out of memory' message on Windows? Download Code

Replies are listed 'Best First'.
Re^2: No 'out of memory' message on Windows? by roboticus (Chancellor) on Feb 09, 2008 at 18:28 UTC
BrowserUk: So LinkBlock didn't verify the pointer was valid before trying to link it into the list? ...roboticus	[reply]
Re^3: No 'out of memory' message on Windows? by BrowserUk (Patriarch) on Feb 09, 2008 at 19:16 UTC
To be honest, I can't work out how it gets in there. The 100+ *alloc macros and functions in the Perl sources make it impossible to work out what is going on at the source level. And the use of C++ (style) classes for odd bits of the code, with runtime built dispatch tables throws my debugger's stack trace into loops. That means I can't follow it in that way. I can only tell you where it appears to be trapping. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. "Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."	[reply]