c++ - arm-eabi-addr2line don't show line number -

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i running arm-eabi-addr2line android project, command 

/applications/android-sdk-mac_86/android-ndk-r5b/toolchains/arm-eabi-4.4.0/prebuilt/darwin-x86/bin/arm-eabi-addr2line -c -f -e {my file} {address}

and found return function name don't show line number, e.g,

xxx::xxx::xxx() ??:0

any idea?

do have debugging symbols in .so? should disable optimization (-o0) , inline functions (-fno-inline)


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