-fdata-sections and an attribute cause internal error

Bug #1329080 reported by Sasha Slijepcevic on 2014-06-11
8
This bug affects 1 person
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Linaro GCC
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Bug Description

The following small file causes an internal error when compiled with Linaro GCC for Arm 4.9, on Linux x86 (64 bit):
const int echo = 5;
const int echo __attribute__ ((externally_visible));

int main(int argc, char* argv[])
{
    return (echo);
}

Here is the command line and the output:
/work/gcc-linaro-arm-linux-gnueabihf-4.9-2014.05_linux/bin/arm-linux-gnueabihf-gcc -I. -I/work/gcc-linaro-arm-linux-gnueabihf-4.9-2014.05_linux/include -c -fPIC -O2 -ffunction-sections -fdata-sections main.c
main.c:2:1: internal compiler error: in get_variable_section, at varasm.c:1095
 const int echo __attribute__ ((externally_visible));
 ^
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.launchpad.net/gcc-linaro> for instructions.

If the option -fdata-sections is omitted, the compilation succeeds. The same problem shows up with Linaro GCC for Arm 4.7 and 4.8, but not with x86 versions of GCC.

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