https://sourceware.org/bugzilla/show_bug.cgi?id=18614
Bug ID: 18614
Summary: Common symbols with local binding are not allocated by
the linker
Product: binutils
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: gold
Assignee: ccoutant at gmail dot com
Reporter: c-addison at ti dot com
CC: ian at airs dot com
Target Milestone: ---
Created attachment 8401
--> https://sourceware.org/bugzilla/attachment.cgi?id=8401&action=edit
Test case containing main.o, local_common.o, and global_common.o
It appears that the linker does not allocate space for common symbols that are
STB_LOCAL in the memory map. The symbol value, which is the alignment, is used
as the address for the symbol in the final executable. I am attaching two
object files produced by the TI ARM compiler, one with a local common symbol
and the other with a global common symbol. You can build:
arm-none-eabi-ld main.o local_common.o
If you examine the executable created by that link, the symbol local_x remains
a common symbol in the executable file. You will also see that the references
to local_x have the value 0x4, which is incorrect.
arm-none-eabi-ld main.o global_common.o
If you examine this executable file, you will see that the symbol global_x is
correctly allocated.
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