Bug 20836

Summary:	cpp does not output '#' lines for some files
Product:	[Retired] Red Hat Linux	Reporter:	chris
Component:	cpp	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED RAWHIDE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	chris
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2000-11-17 10:15:27 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description chris 2000-11-14 17:09:19 UTC

The version of cpp included with RH7.0 doesn't output lines of the form:

# nnn "/usr/include/blahdeblah.h" n n

for any included files which don't generate output (i.e. which only contain
#defines).  Specifically, it doesn't generate such a line for
/usr/include/bits/signum.h, which breaks compilation of the latest
development version of zsh.

Comment 1 Jakub Jelinek 2000-11-15 14:00:22 UTC

What does zsh need it for? I don't think C99 mandates the preprocessor to output
them for headers not generating any output.

Comment 2 chris 2000-11-15 14:13:13 UTC

You're probably right - I couldn't say whether it's actually mandatory or not.
The issue with zsh is described at:

  http://www.zsh.org/mla/workers/2000/msg03745.html
  http://www.zsh.org/mla/workers/2000/msg03748.html

Thanks.

Comment 3 Jakub Jelinek 2000-11-17 10:15:24 UTC

Should be fixed in gcc-2.96-64.