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On Tue, Nov 07, 2000 at 11:01:59AM -0800, Nick Clifton wrote: > Hi H.J. > > I am not familiar with this versioning stuff, so please could you > help me understand your patch by answering a few questions: > > : I modified as so that it will > : > : 1. Allow duplicated version name like > : > : .symver bar,bar@GLIBC_2.1 > : .symver bar,bar@GLIBC_2.1 > > Why do you need this ability ? (I have no objections to it, I am just > wondering whether there ought to be a warning generated if a second, > duplicate, definition is encountered). I am working on a glibc patch. With my patch, 2 identical symbol version definitions may wind up in the asm code. I don't think it should cause any harm, like .globl foo .globl foo > > : ---- > : .file "x.c" > : .version "01.01" > : .symver bar,bar@GLIBC_2.1 > : .symver bar,bar@GLIBC_2.1 > : .globl foobar > : foobar: > : .long foo > : .symver foobar,foobar@GLIBC_2.1 > : dummy: > : .long foo > : .symver foo,foo@GLIBC_2.1 > : ----- > > Does this really work ? I thought that the symbol defined in a > .symver op had to be defined in the same file. Quoting from the as > info file: > > For ELF targets, the `.symver' directive is used like this: > > .symver NAME, NAME2@NODENAME > > In this case, the symbol NAME must exist and be defined within the > file being assembled. The `.versym' directive effectively creates > [snip] It should be updated to something like If NAME is not defined in the file, all references to NAME will be changed to NAME2@NODENAME. > > Or is this your point about removing unneeded version symbols ? (In > which case maybe the documentation ought to be updated as well). > I will update the documentation. -- H.J. Lu (hjl@gnu.org)
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