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gofrontend: deduplicate C syscall function declarations

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A gccgo language extension allows a function to be declared multiple
times. Avoid the use of this extension by dedeplicating declarations
in mksyscall.awk.

From-SVN: r209508
This commit is contained in:
Ian Lance Taylor 2014-04-17 23:39:23 +00:00
parent e8ad3ca026
commit 5584c49a11
1 changed files with 5 additions and 2 deletions
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7
libgo/go/syscall/mksyscall.awk
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@ -96,8 +96,11 @@ BEGIN {
cfnresult = line
printf("// Automatically generated wrapper for %s/%s\n", gofnname, cfnname)
printf("//extern %s\n", cfnname)
printf("func c_%s(%s) %s\n", cfnname, cfnparams, cfnresult)
if (!(cfnname in cfns)) {
cfns[cfnname] = 1
printf("//extern %s\n", cfnname)
printf("func c_%s(%s) %s\n", cfnname, cfnparams, cfnresult)
}
printf("func %s(%s) %s%s%s%s{\n",
gofnname, gofnparams, gofnresults == "" ? "" : "(", gofnresults,
gofnresults == "" ? "" : ")", gofnresults == "" ? "" : " ")