Re: [PATCH 2/7] system_path(): Add prefix computation at runtime if RUNTIME_PREFIX set

From: Steffen Prohaska <prohaska@zib.de>
Date: Aug 18, 2008, 05:28 UTC
Message-ID: <6E4B0DFF-DD1D-450D-B02A-9A89E260DBCB@zib.de>
In-Reply-To: <200808172243.09129.johannes.sixt@telecom.at>

On Aug 17, 2008, at 10:43 PM, Johannes Sixt wrote:

Show 22 quoted lines

> On Sonntag, 17. August 2008, Steffen Prohaska wrote:
>>
>> diff --git a/exec_cmd.c b/exec_cmd.c
>> index ce6741e..1622481 100644
>> --- a/exec_cmd.c
>> +++ b/exec_cmd.c
>> @@ -9,11 +9,51 @@ static const char *argv0_path;
>>
>> const char *system_path(const char *path)
>> {
>> -	if (!is_absolute_path(path) && argv0_path) {
>> -		struct strbuf d = STRBUF_INIT;
>> -		strbuf_addf(&d, "%s/%s", argv0_path, path);
>> -		path = strbuf_detach(&d, NULL);
>> +#ifdef RUNTIME_PREFIX
>> +	static const char *prefix;
>> +
>> +	if (!argv0_path) {
>> +		fprintf(stderr, "RUNTIME_PREFIX requested for path '%s', "
>> +				"but argv0_path not set.\n", path);
>
> If this happens, isn't this a logic error: assert(argv0_path)?

We could consider this a logic error.

Show 7 quoted lines

>> 	}
>> +
>> +	if (!prefix) {
>> +		fprintf(stderr, "RUNTIME_PREFIX requested for path '%s', "
>> +				"but prefix computation failed.\n", path);
>
> Again a logic error?

The user can move the executable, so it's not a logic error.

	Steffen