https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67169
Bug ID: 67169
Summary: -fstack-check=no doesn't disable stack checking
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dwmw2 at infradead dot org
Target Milestone: ---
$ echo 'void foo(void) { char lots[8192]; }' | i686-w64-mingw32-gcc -S -o- -xc
- -fstack-check=no
.file ""
.text
.globl _foo
.def _foo; .scl 2; .type 32; .endef
_foo:
pushl %ebp
movl %esp, %ebp
movl $8192, %eax
call ___chkstk_ms
subl %eax, %esp
nop
leave
ret
.ident "GCC: (GNU) 5.1.0 20150422 (Fedora MinGW 5.1.0-2.fc22)"
This is causing me problems when building the EDK II UEFI implementation.
Building that with MinGW is useful because it reproduces a number of
LLP64-related issues which would otherwise require Windows to discover.
If I use '-fstack-check=specific' *that* does seem to do what I want. But I'm
not sure I should be suggesting that as an upstream fix for the MinGW build,
because it seems wrong.
