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| author | Michael Chastain <mec@google.com> | 2003-06-26 16:22:59 +0000 |
|---|---|---|
| committer | Michael Chastain <mec@google.com> | 2003-06-26 16:22:59 +0000 |
| commit | e8ac10a6d24baaa047da8824433a6393cc8af7c3 (patch) | |
| tree | 2f3239deaa430330a2cb739e5709a3c1bf33bc4e /gdb/PROBLEMS | |
| parent | f40ab5dda0a635c63367d879d2bca7bc36240966 (diff) | |
| download | gdb-e8ac10a6d24baaa047da8824433a6393cc8af7c3.zip gdb-e8ac10a6d24baaa047da8824433a6393cc8af7c3.tar.gz gdb-e8ac10a6d24baaa047da8824433a6393cc8af7c3.tar.bz2 | |
2003-06-24 Michael Chastain <mec@shout.net>
* PROBLEMS: Document pr gdb/1091 and pr gdb/1193,
the "constructor breakpoints ignored" bug.
Diffstat (limited to 'gdb/PROBLEMS')
| -rw-r--r-- | gdb/PROBLEMS | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gdb/PROBLEMS b/gdb/PROBLEMS index 84a42b4..7480633 100644 --- a/gdb/PROBLEMS +++ b/gdb/PROBLEMS @@ -3,4 +3,19 @@ See also: http://www.gnu.org/software/gdb/bugs/ +gdb/1091: Constructor breakpoints ignored +gdb/1193: g++ 3.3 creates multiple constructors: gdb 5.3 can't set breakpoints +When gcc 3.x compiles a C++ constructor or C++ destructor, it generates +2 or 3 different versions of the object code. These versions have +unique mangled names (they have to, in order for linking to work), but +they have identical source code names, which leads to a great deal of +confusion. Specifically, if you set a breakpoint in a constructor or a +destructor, gdb will put a breakpoint in one of the versions, but your +program may execute the other version. This makes it impossible to set +breakpoints reliably in constructors or destructors. + +gcc 3.x generates these multiple object code functions in order to +implement virtual base classes. gcc 2.x generated just one object code +function with a hidden parameter, but gcc 3.x conforms to a multi-vendor +ABI for C++ which requires multiple object code functions. |