Bug 162969 – Internal error in gfortran when including many files

Bug 162969 - Internal error in gfortran when including many files

Summary:	Internal error in gfortran when including many files

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	gcc4 (Show other bugs)
Sub Component:
Version:	rawhide
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Jakub Jelinek
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Duplicates:	163019 163021 (view as bug list)
Depends On:
Blocks:
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Reported:	2005-07-11 17:51 EDT by Alexander Täschner
Modified:	2007-11-30 17:11 EST (History)
CC List:	1 user (show)

See Also:
Fixed In Version:	4.0.1-3
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2005-07-15 07:50:16 EDT
Type:	---
Regression:	---
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Description Alexander Täschner 2005-07-11 17:51:52 EDT

When compiling a file which includes a "chain" of include files
an internal error occurs, if the length of the file names
of all included files excess a certain limit.
This error didn't occure in version 4.0.0-13, but in 4.0.1-2.

The following artificial testcase shows the error:

--- start of file "test.F" ---
#include "A234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890"
      END
--- EOF ---

--- start of 
file "A2345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890" ---
#include "B234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890"
--- EOF ---

--- start of 
file "B2345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890" ---
#include "C234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890"
--- EOF ---

--- start of 
file "C2345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890" ---
#include "D234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890"
--- EOF ---

--- start of 
file "D2345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890" ---
      PARAMETER (I=1)
--- EOF ---

Compiling this with
--- start of 
file "C2345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
56789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890" ---
#include "D234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890"
--- EOF ---

Compiling this with "gfortran -c test.F" leads to the following error:
Warning: 
D2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:2: file 
C2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890 left but not entered
Warning: 
D2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:2: file 
B2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890 left but not entered
Warning: 
D2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:3: file 
A2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890 left but not entered
Warning: 
D2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:3: file test.F left but not entered
 In file 
D2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:1

     Included at 
C2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:2

     Included at 
B2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:2

     Included at 
A2345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1234567890:2

     Included at test.F:2

      PARAMETER (I=1)
                 1
 Internal Error at (1):
 error_char(): Error buffer overflow

Comment 1 Jakub Jelinek 2005-07-12 05:39:46 EDT

I see the error_char(): Error buffer overflow bug with all gfortran versions
I have tried.  The bogus file.*left but not entered warning is PR fortran/22417.
Fix for that is http://gcc.gnu.org/ml/gcc-patches/2005-07/msg00820.html
and for the buffer overflow
http://gcc.gnu.org/ml/gcc-patches/2005-07/msg00821.html

Comment 2 Jakub Jelinek 2005-07-12 06:42:30 EDT

*** Bug 163019 has been marked as a duplicate of this bug. ***

Comment 3 Jakub Jelinek 2005-07-12 06:48:01 EDT

*** Bug 163021 has been marked as a duplicate of this bug. ***

Comment 4 Jakub Jelinek 2005-07-15 07:50:16 EDT

This should be fixed in gcc 4.0.1-3 in rawhide.

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