Question about volatile variable in X86 backend

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1

Hi,
I am trying to run gcc.c-torture cases by using clang(version 3.4 realse,debug build).
And my command line is showed following.
clang fprintf-chk-1.c -O2 -c -o test.o
gcc test.o -o test.elf

Then I execute this object. However it fail with abort.
llvm doesn’t support volatile variable?
This test case is from gcc/testsuite/gcc.c-torture/execute/fprintf-chk-1.c

Any suggestion will be appreciated.
Thanks a million in advance.
-Haishan

2

Hi Haishan,

Then I execute this object. However it fail with abort.
llvm doesn't support volatile variable?

It looks like that test is actually trying to find out whether GCC
knows any special semantics for __fprintf_chk rather than whether it
can handle volatiles.

Clang doesn't do anything in particular with that function so it
"fails". It's compiling the file correctly as far as I can see.

Cheers.

Tim.