196323 – g++ gives line number out of range with -pedantic

Bug 196323 - g++ gives line number out of range with -pedantic

Summary: g++ gives line number out of range with -pedantic

Keywords:
Status:	CLOSED NOTABUG
Alias:	None
Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	gcc3
Sub Component:
Version:	4.0
Hardware:	i686
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Target Release:	---
Assignee:	Jakub Jelinek
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2006-06-22 15:41 UTC by Mark Nodine
Modified:	2007-11-30 22:07 UTC (History)
CC List:	0 users
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2006-06-22 16:00:46 UTC
Target Upstream Version:
Embargoed:

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Description Mark Nodine 2006-06-22 15:41:42 UTC

Description of problem:


Version-Release number of selected component (if applicable):
g++ (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-52)

How reproducible:
Completely.

Steps to Reproduce:
1.  Create a file bug.cpp with the following text:
#line 32768 "test.c"
#line 32767 "test.c"
2. g++ -o -pedantic -Werror test.cpp

Actual results:
bug.cpp:1:7: line number out of range
(plus no .o file is generated due to -Werror)

Expected results:
No error message and generate .o

Additional info:
Apparently g++ requires numbers in line directives to fit in a signed
16-bit number, since 32767 is OK but 32768 is not.

Comment 1 Mark Nodine 2006-06-22 15:43:04 UTC

Sorry.  Step 2 should have been

2. g++ -o -pedantic -Werror bug.cpp

Comment 2 Jakub Jelinek 2006-06-22 16:00:46 UTC

Please read the standard:
ISO/IEC 14882:1998
In [cpp.line]/3:
"If the digit sequence specifies zero or a number greater than 32767,
the behavior is undefined."

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