Re: PATCH - e2fsprogs - rename static variable link

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On Tue, Apr 29, 2014 at 11:04:54AM +0200, Martin Liška wrote:
> Hello,
>    I've been testing gentoo packages: http://marxin.github.io/blog/2014/04/24/gentoo-linux-packages-with-gcc-4-dot-9-lto/
> and I met few gentoo packages that have conflicting variable with
> compile_et:
> 
> https://github.com/krb5/krb5/issues/106
> 
> I would like to ask you if you can apply attached patch. It's
> suggestion, maybe you will find better variable name.
> 
> Compiles fine for x86_64, test suite passes.

Looks ok to me, but you should add a Signed-off-by: and send to
linux-ext4@xxxxxxxxxxxxxxx [cc'd] so Ted can have a look and possibly apply it.
It's sort of surprising that LTO can't deal with a static variable that shadows
a global symbol, but then I haven't looked at LTO.

--D

> 
> Thank you,
> Martin

> diff --git a/lib/et/et_c.awk b/lib/et/et_c.awk
> index 99c33ba..8680279 100644
> --- a/lib/et/et_c.awk
> +++ b/lib/et/et_c.awk
> @@ -238,7 +238,7 @@ END {
>  		tab_base_low, table_item_count) > outfile
>  	}
>  	print "" > outfile
> -	print "static struct et_list link = { 0, 0 };" > outfile
> +	print "static struct et_list link_ = { 0, 0 };" > outfile
>  	print "" > outfile
>  	print "void initialize_" table_name "_error_table_r(struct et_list **list);" > outfile
>  	print "void initialize_" table_name "_error_table(void);" > outfile
> @@ -257,8 +257,8 @@ END {
>  	print "            return;" > outfile
>  	print "    et = malloc(sizeof(struct et_list));" > outfile
>  	print "    if (et == 0) {" > outfile
> -	print "        if (!link.table)" > outfile
> -	print "            et = &link;" > outfile
> +	print "        if (!link_.table)" > outfile
> +	print "            et = &link_;" > outfile
>  	print "        else" > outfile
>  	print "            return;" > outfile
>  	print "    }" > outfile
> diff --git a/lib/et/test_cases/continuation.c b/lib/et/test_cases/continuation.c
> index 1207897..1e17ba4 100644
> --- a/lib/et/test_cases/continuation.c
> +++ b/lib/et/test_cases/continuation.c
> @@ -25,7 +25,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_ovk_error_table = { text, 43787520L, 1 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_ovk_error_table_r(struct et_list **list);
>  void initialize_ovk_error_table(void);
> @@ -44,8 +44,8 @@ void initialize_ovk_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }
> diff --git a/lib/et/test_cases/heimdal.c b/lib/et/test_cases/heimdal.c
> index d9be4ce..192c9bb 100644
> --- a/lib/et/test_cases/heimdal.c
> +++ b/lib/et/test_cases/heimdal.c
> @@ -106,7 +106,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_krb_error_table = { text, 39525376L, 82 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_krb_error_table_r(struct et_list **list);
>  void initialize_krb_error_table(void);
> @@ -125,8 +125,8 @@ void initialize_krb_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }
> diff --git a/lib/et/test_cases/heimdal2.c b/lib/et/test_cases/heimdal2.c
> index a8d4c11..ec5b646 100644
> --- a/lib/et/test_cases/heimdal2.c
> +++ b/lib/et/test_cases/heimdal2.c
> @@ -92,7 +92,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_kadm_error_table = { text, -1783126272L, 68 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_kadm_error_table_r(struct et_list **list);
>  void initialize_kadm_error_table(void);
> @@ -111,8 +111,8 @@ void initialize_kadm_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }
> diff --git a/lib/et/test_cases/heimdal3.c b/lib/et/test_cases/heimdal3.c
> index b8b9b73..4ffbb1b 100644
> --- a/lib/et/test_cases/heimdal3.c
> +++ b/lib/et/test_cases/heimdal3.c
> @@ -26,7 +26,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_h3test_error_table = { text, 43787520L, 2 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_h3test_error_table_r(struct et_list **list);
>  void initialize_h3test_error_table(void);
> @@ -45,8 +45,8 @@ void initialize_h3test_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }
> diff --git a/lib/et/test_cases/imap_err.c b/lib/et/test_cases/imap_err.c
> index 6f576d3..ca5414e 100644
> --- a/lib/et/test_cases/imap_err.c
> +++ b/lib/et/test_cases/imap_err.c
> @@ -54,7 +54,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_imap_error_table = { text, -1904809472L, 30 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_imap_error_table_r(struct et_list **list);
>  void initialize_imap_error_table(void);
> @@ -73,8 +73,8 @@ void initialize_imap_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }
> diff --git a/lib/et/test_cases/simple.c b/lib/et/test_cases/simple.c
> index 10ab1a3..76b64ec 100644
> --- a/lib/et/test_cases/simple.c
> +++ b/lib/et/test_cases/simple.c
> @@ -46,7 +46,7 @@ extern struct et_list *_et_list;
>  
>  const struct error_table et_krb_error_table = { text, 39525376L, 22 };
>  
> -static struct et_list link = { 0, 0 };
> +static struct et_list link_ = { 0, 0 };
>  
>  void initialize_krb_error_table_r(struct et_list **list);
>  void initialize_krb_error_table(void);
> @@ -65,8 +65,8 @@ void initialize_krb_error_table_r(struct et_list **list)
>              return;
>      et = malloc(sizeof(struct et_list));
>      if (et == 0) {
> -        if (!link.table)
> -            et = &link;
> +        if (!link_.table)
> +            et = &link_;
>          else
>              return;
>      }

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