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[Bug libffi/34612] New: libffi doesn't work with -fomit-frame-pointer
- From: "hjl at lucon dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Dec 2007 20:16:06 -0000
- Subject: [Bug libffi/34612] New: libffi doesn't work with -fomit-frame-pointer
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
[hjl@gnu-9 testsuite]$ /export/build/gnu/gcc-stack/build-i686-linux/gcc/xgcc
-B/export/build/gnu/gcc-stack/build-i686-linux/gcc/
/net/gnu-6/export/gnu/src/gcc-stack/gcc/libffi/testsuite/libffi.call/cls_16byte.c
-Os
-I/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/include
-I/net/gnu-6/export/gnu/src/gcc-stack/gcc/libffi/testsuite/../include
-I/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/include/..
-L/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/.libs
-L/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libstdc++-v3/src/.libs
-lffi -lm -o ./cls_16byte.exe -Wl,-rpath,../.libs
[hjl@gnu-9 testsuite]$ ./cls_16byte.exe
7 8 9 1 9 3: 8 17 12
res: 8 17 12
7 8 9 1 9 3: 8 17 12
res: 8 17 12
[hjl@gnu-9 testsuite]$ /export/build/gnu/gcc-stack/build-i686-linux/gcc/xgcc
-B/export/build/gnu/gcc-stack/build-i686-linux/gcc/
/net/gnu-6/export/gnu/src/gcc-stack/gcc/libffi/testsuite/libffi.call/cls_16byte.c
-Os
-I/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/include
-I/net/gnu-6/export/gnu/src/gcc-stack/gcc/libffi/testsuite/../include
-I/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/include/..
-L/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libffi/.libs
-L/export/build/gnu/gcc-stack/build-i686-linux/i686-pc-linux-gnu/./libstdc++-v3/src/.libs
-lffi -lm -o ./cls_16byte.exe -Wl,-rpath,../.libs -fomit-frame-pointer
[hjl@gnu-9 testsuite]$ ./cls_16byte.exe
7 8 9 1 9 3: 8 17 12
res: 8 17 12
7 8 9 1 9 3: 8 17 12
Segmentation fault
[hjl@gnu-9 testsuite]$
That is because libffi fails to keep stack pointer unchanged after calling
function with structure return value, many libffi test case will fail with
-fomit-frame-pointer on ia32.
--
Summary: libffi doesn't work with -fomit-frame-pointer
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libffi
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl at lucon dot org
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34612