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Date:	Sun, 7 Dec 2014 11:44:42 +0100 (CET)
From:	Julia Lawall <>
To:	Joe Perches <>
cc:	SF Markus Elfring <>,
	Sergei Shtylyov <>,
	Paul Mackerras <>,,, Eric Dumazet <>,
	LKML <>,
Subject: Re: [PATCH v2 1/6] net-PPP: Replacement of a printk() call by
 pr_warn() in mppe_rekey()

> A negative to that approach is inlined functions would
> take the function name of the parent not keep the
> inlined function name.

I tried the following:

#include <stdio.h>

inline int foo() {
  printf("%s %x\n",__func__,0x12345);

int main () {

The assembly code generated for main is:

0000000000400470 <main>:
  400470:       b9 45 23 01 00          mov    $0x12345,%ecx
  400475:       ba 4b 06 40 00          mov    $0x40064b,%edx
  40047a:       be 44 06 40 00          mov    $0x400644,%esi
  40047f:       bf 01 00 00 00          mov    $0x1,%edi
  400484:       31 c0                   xor    %eax,%eax
  400486:       e9 d5 ff ff ff          jmpq   400460 <__printf_chk@plt>

That is, the call to foo seems tom be inlined.

But the output is:

foo 12345

So it seems that __func__ is determined before inlining.

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