Wed Oct 17 16:16:19 2012: Request 80217 was acted upon.
Transaction: Correspondence added by BULKDD
Queue: Win32-API
Subject: Build failure under Cygwin on Windows
Broken in: 0.72
Severity: Critical
Owner: Nobody
Requestors: [email protected]
Status: open
Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=80217 >
The culprit from cygwin.asm
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#ifdef L_chkstk
/* Function prologue calls _alloca to probe the stack when allocating more
than CHECK_STACK_LIMIT bytes in one go. Touching the stack at 4K
increments is necessary to ensure that the guard pages used
by the OS virtual memory manger are allocated in correct sequence. */
.global ___chkstk
.global __alloca
#ifndef _WIN64
___chkstk:
__alloca:
pushl %ecx /* save temp */
leal 8(%esp), %ecx /* point past return addr */
cmpl $0x1000, %eax /* > 4k ?*/
jb Ldone
Lprobe:
subl $0x1000, %ecx /* yes, move pointer down 4k*/
orl $0x0, (%ecx) /* probe there */
subl $0x1000, %eax /* decrement count */
cmpl $0x1000, %eax
ja Lprobe /* and do it again */
Ldone:
subl %eax, %ecx
orl $0x0, (%ecx) /* less than 4k, just peek here */
movl %esp, %eax /* save old stack pointer */
movl %ecx, %esp /* decrement stack */
movl (%eax), %ecx /* recover saved temp */
movl 4(%eax), %eax /* recover return address */
/* Push the return value back. Doing this instead of just
jumping to %eax preserves the cached call-return stack
used by most modern processors. */
pushl %eax
ret
#else
___________CUT______________________
