Bug 175528

Summary: Bad: internal compiler error when using typeof
Product: [Fedora] Fedora Reporter: Li Jie <cpunion>
Component: gcc4Assignee: Jakub Jelinek <jakub>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4   
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Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2005-12-12 12:30:51 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Li Jie 2005-12-12 12:05:36 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; Maxthon; Poco 0.31; .NET CLR 1.1.4322; .NET CLR 2.0.50215)

Description of problem:
I write this code:

template <class T, class U> 
typeof(T() > U() ? T() : U()) MaX (const T& t, const U& u) 
{ 
return t > u ? t : u; 
} 

int main ()
{
    int a = MaX(3, (short)5);
    double b = MaX(5, 3.5);
    return 0;
}

It has some errors when compiling:

test.cpp: In function &acirc;â¬&#732;__typeof__ (((T() > U()) ? T() : U())) MaX(const T&, const U&) [with T = int, U = int]&acirc;â¬&#8482;: 
test.cpp:8: internal compiler error: in write_type, at cp/mangle.c:1646 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://bugzilla.redhat.com/bugzilla> for instructions. 
Preprocessed source stored into /tmp/ccdZk5dN.out file, please attach this to your bugreport. 

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


How reproducible:
Always

Steps to Reproduce:
1. save the code to "test.cpp"
2. run "g++ -o test test.cpp
  

Additional info:
Comment 1 Jakub Jelinek 2005-12-12 12:30:51 UTC 
That's a well known upstream bug.  No point to track it here separately.