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

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

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

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	gcc3 (Show other bugs)
Sub Component:
Version:	4.0
Hardware:	i686 Linux

Priority	medium Severity medium
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Assigned To:	Jakub Jelinek
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Reported:	2006-06-22 11:41 EDT by Mark Nodine
Modified:	2007-11-30 17:07 EST (History)
CC List:	0 users

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Doc Type:	Bug Fix
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Last Closed:	2006-06-22 12:00:46 EDT
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Description Mark Nodine 2006-06-22 11:41:42 EDT

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 11:43:04 EDT

Sorry.  Step 2 should have been

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

Comment 2 Jakub Jelinek 2006-06-22 12:00:46 EDT

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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