bugTiny C Compiler - Bugs: bug #44889, interfacing with other compilers

 
 

bug #44889: interfacing with other compilers

Submitter:  None
Submitted:  Tue 21 Apr 2015 06:34:52 AM UTC
   
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open
* Mandatory Fields

Add a New Comment Rich Markup
   

Tue 21 Apr 2015 06:34:52 AM UTC, original submission:  

Hi,

We've encountered wrong execution results on i386 platforms with an application that uses both code compiled with TCC and code compiled with other compilers (namely: Visual Studio on Windows, and GCC on Linux).
When calling a function that returns an integer value shorter than 32 bits, TCC reads the return value from the whole EAX register, although the code generated by the other compilers can only sets AL for 8 bit values or AX for 16 bits values, and the rest of EAX can be anything.

We worked around this with the attached patch on i386 for the version 0.9.26, but we did not look at other platforms to find if there are similar issues.

Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:
   
   
Comment:
   

Attached Files
file #33731:  short_call_convention.patch added by None (1KiB - text/x-patch)

 

Depends on the following items: None found

Items that depend on this one: None found

 

CC list is empty

 

There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

Only logged-in users can vote.

 

Follows 1 latest change.

Date Changed by Updated Field Previous Value => Replaced by
2015-04-21 None Attached File- Added short_call_convention.patch, #33731

Back to the top

Powered by Savane 3.14-8eb0.
Corresponding source code