From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C | 52 ++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C (limited to 'gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C') diff --git a/gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C b/gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C new file mode 100644 index 000000000..277d594b8 --- /dev/null +++ b/gcc/testsuite/g++.old-deja/g++.jason/rvalue1.C @@ -0,0 +1,52 @@ +// { dg-do run } +// PRMS Id: 6000 +// Bug: g++ gets confused trying to build up a reference to a cast. + +class String { +protected: + char *cp; +public: + String(char *incp); + String(const String &constStringRef); + virtual void virtualFn1(void) const {;} +}; + +String::String(char *incp) +{ + cp = incp; +} + +String::String(const String &constStringRef) +{ +// Right here, do an 'info args', and look at the virtual function table +// pointer: typically junk! Calling the function through that table could +// do anything, since we're really leaping off into the void. This example +// goes down with 'SIGBUS', but I've seen 'SIGSEGV' too, and 'SIGILL' is +// possible. + + cp = constStringRef.cp; + constStringRef.virtualFn1(); +} + +void foofun(String string) +{ + ; +} + +class Class1 { +public: + Class1(const String & constStringRef); +}; + +Class1 :: Class1 (const String & constStringRef) +{ +// If instead of calling the function 'foofun()' here, we just assign +// 'constStringRef' to a local variable, then the vptr is typically == 0! + + foofun(String(constStringRef)); +} + +int main(void) +{ + Class1 *class1 = new Class1((char*) "Hi!"); +} -- cgit v1.2.3