[PATCH 0/2] x86: fix longjmp() implementation

longjmp() must be defined as

void longjmp(jmp_buf env, int val)

Add the missing jmp_buf type and fix the definition. This fixes building the longjmp unit test on qemu-x86_defconfig.

If longjmp(jmp_buf env, int val) is invoked with val == 0, the setjmp() macro must return 1.

We could have easily discovered this problem and others if unit tests (CONFIG_UNIT_TEST) were enabled for qemu-x86_defconfig. We should try to get there in the 2023.01 cycle.

Heinrich Schuchardt (2): x86: fix longjmp() implementation x86: provide typedef jmp_buf

arch/x86/cpu/i386/setjmp.S | 5 +++++ arch/x86/include/asm/setjmp.h | 6 ++++-- 2 files changed, 9 insertions(+), 2 deletions(-)