Bug 1299599 - [gcc] Compilations fails with 'expected unqualified-id before token' when code contains vector class and macro and local var sharing same name
Summary: [gcc] Compilations fails with 'expected unqualified-id before token' when cod...
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: gcc
Version: 24
Hardware: ppc64le
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Keywords:
Depends On:
Blocks: PPCTracker F-ExcludeArch-ppc64le, PPC64LETracker
TreeView+ depends on / blocked
 
Reported: 2016-01-18 17:44 UTC by Rafael Fonseca
Modified: 2017-08-08 12:40 UTC (History)
7 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2017-08-08 12:40:34 UTC


Attachments (Terms of Use)
gcc/ppc64le error reproducer (898 bytes, text/x-csrc)
2016-01-18 17:44 UTC, Rafael Fonseca
no flags Details


External Trackers
Tracker ID Priority Status Summary Last Updated
GNU Compiler Collection 70296 None None None 2016-03-18 14:38 UTC

Description Rafael Fonseca 2016-01-18 17:44:16 UTC
Created attachment 1115927 [details]
gcc/ppc64le error reproducer

Description of problem: qucs fails to build on ppc64le [1]. The reason seems to be that during preprocessing, gcc strips out the variable name. And that seems to happen because there is a local variable of the type 'vector' named the same as a macro.

The attached test case reproduces the issue.

[1] http://ppc.koji.fedoraproject.org/kojifiles/work/tasks/7101/3077101/build.log


Version-Release number of selected component (if applicable): 5.3.1-2


How reproducible: always when building qucs on ppc64le-koji. Always when compiling attached code on ppc64le.


Steps to Reproduce:
1. g++ test.cpp

Actual results: test.cpp:59:11: error: expected unqualified-id before ‘=’ token
  vector R = sqrt(C * C) + test(C);

In the processed file:

int
main(int argc, char *argv[])
{
 int C = -1;
 vector = sqrt(C * C) + test(C);

 cout << C << " " << R << endl;

 return 0;
}

Expected results: compilation is successful (like in other arches).


Additional info: happens on f22, f23 and rawhide.

Comment 1 Jan Kurik 2016-02-24 14:18:16 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle.
Changing version to '24'.

More information and reason for this action is here:
https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase

Comment 2 Martin Sebor 2016-03-16 19:34:42 UTC
The test case doesn't look quite right (there's no insertion operator matching std::ostream and ::vector) and doesn't compile even on x86_64.

There is a known problem with the name vector in the powerpc GCC, however: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51654.  That coule be behind the qucs build issue.

Comment 3 Jakub Jelinek 2016-03-18 14:38:55 UTC
Tracking upstream now in PR70296.

Comment 4 Fedora End Of Life 2017-07-25 19:48:05 UTC
This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 24. It is Fedora's policy to close all
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Comment 5 Fedora End Of Life 2017-08-08 12:40:34 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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