[LLVMdev] problem with setLocale

Ali Sedaghat ali.sedaghatbaf at gmail.com
Sat Jan 26 22:36:10 PST 2013


In order to print unicode characters with llvm, I used setLocale in llvm ir:

    call i8* @setlocale(i32 6, i8* getelementptr inbounds ([1 x i8]* @pe,
i32 0, i32 0)) nounwind

where @pe is defined as follows:

    @pe = private unnamed_addr constant [1 x i8] zeroinitializer, align 1

However, I got the following error:

    *** glibc detected *** ./test/bin/executable: free(): invalid next size
(fast): 0x08f93140 ***

I used gdb to debug the program and the backtrace is as follows:

    #0  0xb7728424 in __kernel_vsyscall ()
    #1  0xb74aee71 in raise () from /lib/i386-linux-gnu/libc.so.6
    #2  0xb74b234e in abort () from /lib/i386-linux-gnu/libc.so.6
    #3  0xb74e5577 in ?? () from /lib/i386-linux-gnu/libc.so.6
    #4  0xb74ef961 in ?? () from /lib/i386-linux-gnu/libc.so.6
    #5  0xb74f128b in ?? () from /lib/i386-linux-gnu/libc.so.6
    #6  0xb74f441d in free () from /lib/i386-linux-gnu/libc.so.6
    #7  0xb74a6730 in ?? () from /lib/i386-linux-gnu/libc.so.6
    #8  0xb74a5299 in ?? () from /lib/i386-linux-gnu/libc.so.6
    #9  0xb74a4cd1 in setlocale () from /lib/i386-linux-gnu/libc.so.6
    ...

How can I resolve this issue? Any help would be appreciated
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