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Bug 15742 - [3.4/4.0 Regression] 'noreturn' attribute ignored in method of template functions.
Summary: [3.4/4.0 Regression] 'noreturn' attribute ignored in method of template funct...
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: c++ (show other bugs)
Version: 4.0.0
: P2 normal
Target Milestone: 3.4.1
Assignee: Mark Mitchell
URL:
Keywords: diagnostic
Depends on:
Blocks:
 
Reported: 2004-05-31 01:57 UTC by Carlo Wood
Modified: 2004-10-30 21:11 UTC (History)
1 user (show)

See Also:
Host:
Target:
Build:
Known to work: 3.3.3
Known to fail: 3.4.0 4.0.0
Last reconfirmed: 2004-05-31 01:58:52


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Description Carlo Wood 2004-05-31 01:57:09 UTC
The following code snippet:

extern void exit(int) __attribute__ ((noreturn));

template<typename T>
  struct A {
    int find_cmp(void) { exit(1); }
  };

When compiled with -Wall gives:

>g++-3.4.0 -Wall -c test.cc
test.cc: In member function `int A<T>::find_cmp()':
test.cc:5: warning: no return statement in function returning non-void

Also broken in 3.5.0 20040530 (today).

Warning does not occur with 3.3.3.
Comment 1 Andrew Pinski 2004-05-31 01:58:51 UTC
Confirmed.
Comment 2 Mark Mitchell 2004-05-31 18:13:25 UTC
Working on a fix.
Comment 3 CVS Commits 2004-05-31 21:04:26 UTC
Subject: Bug 15742

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	mmitchel@gcc.gnu.org	2004-05-31 21:04:15

Modified files:
	gcc/testsuite  : ChangeLog 
	gcc/cp         : ChangeLog call.c cp-tree.h cvt.c name-lookup.c 
	                 pt.c tree.c typeck.c 
	gcc/testsuite/g++.dg/ext: packed3.C packed4.C 
	gcc/testsuite/g++.dg/template: friend.C 
Added files:
	gcc/testsuite/g++.dg/expr: ptrmem5.C 
	gcc/testsuite/g++.dg/ext: packed6.C 
	gcc/testsuite/g++.dg/template: friend27.C friend28.C 
	gcc/testsuite/g++.dg/warn: Wreturn-1.C 

Log message:
	PR c++/15742
	* call.c (build_over_call): Set
	current_function_returns_abnormally even in template functions.
	
	PR c++/15696
	* cp-tree.h (invalid_nonstatic_memfn_p): New function.
	* cvt.c (convert_to_void): Use it.
	* typeck.c (invalid_nonstatic_memfn_p): New function.
	(decay_conversion): Use it.
	
	PR c++/15625
	* pt.c (tsubst_decl): Set DECL_FRIEND_CONTEXT for instantiated
	templates.
	
	PR c++/15629
	* name-lookup.c (arg_assoc_class): Do not find template
	specializations.
	
	PR c++/15209
	* tree.c (lvalue_p_1): Only consider the right-hand side of "."
	expressions when determining whether or not an express is packed.
	
	PR c++/15742
	* g++.dg/warn/Wreturn-1.C: New test.
	
	PR c++/15696
	* g++.dg/expr/ptrmem5.C: New test.
	
	PR c++/15625
	* g++.dg/template/friend27.C: New test.
	
	PR c++/15629
	* g++.dg/template/friend28.C: New test.
	* g++.dg/template/friend.C: Do not depend on <iostream>.  Add
	error message.
	
	PR c++/15209
	* g++.dg/ext/packed3.C: Remove bogus error.
	* g++.dg/ext/packed4.C: Remove bogus check.
	* g++.dg/ext/packed6.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.187&r2=1.3389.2.188
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.109&r2=1.3892.2.110
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/call.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.452.2.16&r2=1.452.2.17
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cp-tree.h.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.946.4.12&r2=1.946.4.13
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cvt.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.151.4.1&r2=1.151.4.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.34.2.13&r2=1.34.2.14
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.816.2.26&r2=1.816.2.27
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/tree.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.360.4.5&r2=1.360.4.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.519.2.18&r2=1.519.2.19
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/expr/ptrmem5.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed6.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed3.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.1&r2=1.1.24.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed4.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.1&r2=1.1.24.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend27.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend28.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.5&r2=1.5.56.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/warn/Wreturn-1.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1

Comment 4 CVS Commits 2004-05-31 21:24:35 UTC
Subject: Bug 15742

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-05-31 21:24:31

Modified files:
	gcc/cp         : call.c cp-tree.h cvt.c name-lookup.c pt.c 
	                 tree.c typeck.c 
	gcc/testsuite/g++.dg/ext: packed3.C packed4.C 
	gcc/testsuite/g++.dg/template: friend.C 
Added files:
	gcc/testsuite/g++.dg/expr: ptrmem5.C 
	gcc/testsuite/g++.dg/ext: packed6.C 
	gcc/testsuite/g++.dg/template: friend27.C friend28.C 
	gcc/testsuite/g++.dg/warn: Wreturn-1.C 

Log message:
	PR c++/15742
	* call.c (build_over_call): Set
	current_function_returns_abnormally even in template functions.
	
	PR c++/15696
	* cp-tree.h (invalid_nonstatic_memfn_p): New function.
	* cvt.c (convert_to_void): Use it.
	* typeck.c (invalid_nonstatic_memfn_p): New function.
	(decay_conversion): Use it.
	
	PR c++/15625
	* pt.c (tsubst_decl): Set DECL_FRIEND_CONTEXT for instantiated
	templates.
	
	PR c++/15629
	* name-lookup.c (arg_assoc_class): Do not find template
	specializations.
	
	PR c++/15209
	* tree.c (lvalue_p_1): Only consider the right-hand side of "."
	expressions when determining whether or not an express is packed.
	
	PR c++/15742
	* g++.dg/warn/Wreturn-1.C: New test.
	
	PR c++/15696
	* g++.dg/expr/ptrmem5.C: New test.
	
	PR c++/15625
	* g++.dg/template/friend27.C: New test.
	
	PR c++/15629
	* g++.dg/template/friend28.C: New test.
	* g++.dg/template/friend.C: Do not depend on <iostream>.  Add
	error message.
	
	PR c++/15209
	* g++.dg/ext/packed3.C: Remove bogus error.
	* g++.dg/ext/packed4.C: Remove bogus check.
	* g++.dg/ext/packed6.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/call.c.diff?cvsroot=gcc&r1=1.476&r2=1.477
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cp-tree.h.diff?cvsroot=gcc&r1=1.969&r2=1.970
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cvt.c.diff?cvsroot=gcc&r1=1.156&r2=1.157
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&r1=1.56&r2=1.57
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.856&r2=1.857
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/tree.c.diff?cvsroot=gcc&r1=1.374&r2=1.375
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&r1=1.547&r2=1.548
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/expr/ptrmem5.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed6.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed3.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed4.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend27.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend28.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/friend.C.diff?cvsroot=gcc&r1=1.5&r2=1.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/warn/Wreturn-1.C.diff?cvsroot=gcc&r1=1.1&r2=1.2

Comment 5 Mark Mitchell 2004-05-31 21:29:20 UTC
Fixed in GCC 3.4.1.