[Bug c++/53005] New: GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005 Bug #: 53005 Summary: GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code. Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: zhao86.scho...@gmail.com Created attachment 27167 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27167 C code to reproduce the bug. When making C-style calling of C functions in a C function with inline assembly code, GCC moves the called C function address and parameters to the wrong stack position, which is overwriting the values of other variables in the stack. The problem can be reproduced using the C code in the attached. The exact version of GCC: 4.2.1 The system type: i686-apple-darwin11 The options given when GCC was configured/built: /private/var/tmp/llvmgcc42/llvmgcc42-2335.15~25/src/configure --disable-checking --enable-werror --prefix=/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2335.15~25/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005 --- Comment #2 from Lili Zhao 2012-04-16 10:17:43 UTC --- Do you mean we should use a later GCC version? (In reply to comment #1) > GCC 4.2 is not supported, please try a current release.
[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005 --- Comment #6 from Lili Zhao 2012-04-17 02:43:31 UTC --- Thanks all the same! I'll try on the latest gcc version to see if the bug reproduce. Thank you! 2012/4/16 manu at gcc dot gnu.org > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005 > > --- Comment #5 from Manuel López-Ibáñez > 2012-04-16 11:18:51 UTC --- > Lili Zhao, I forgot to say, but feel free to reopen this if you can > reproduce > the bug with GCC 4.7. Thanks for the report anyway, and sorry we cannot > help > you. > > -- > Configure bugmail: http://gcc.gnu.org/bugzilla/userprefs.cgi?tab=email > --- You are receiving this mail because: --- > You are on the CC list for the bug. > You reported the bug. >
