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| author | Frank Ch. Eigler <fche@elastic.org> | 2010-03-03 00:28:22 -0500 |
|---|---|---|
| committer | Frank Ch. Eigler <fche@elastic.org> | 2010-03-03 00:33:43 -0500 |
| commit | f4fe2e932cc8f445e9e1bc52863e11b669e3afc9 (patch) | |
| tree | ba062952c0a37f02ebcf0eb2f533d44ee41fdb25 /NEWS | |
| parent | d105f6642677bd9ef1b20d1ba180ba0163cb0fa6 (diff) | |
| download | systemtap-steved-f4fe2e932cc8f445e9e1bc52863e11b669e3afc9.tar.gz systemtap-steved-f4fe2e932cc8f445e9e1bc52863e11b669e3afc9.tar.xz systemtap-steved-f4fe2e932cc8f445e9e1bc52863e11b669e3afc9.zip | |
PR11004: try / catch error-handling script syntax
* parse.h (try_block): New class. Update basic visitors.
* staptree.cxx: Implement basic visitors.
* parse.cxx (expect_kw): Fix to actually look for keywords.
(parse_try_block): New function.
(lexer ctor): Designate 'try' and 'catch' as keywords.
* elaborate.cxx (dead_assignment_remover, dead_statmtexpr_remover): Optimize.
(other visitors): Implement.
* translate.cxx (c_unparser): Implement via super-handy __local__ labels.
(emit_probe, emit_function): Make outer out: label also __local__.
* testsuite/buildok/fortyone.stp, semko/fortynine.stp,
systemtap.base/trycatch.exp: Test it.
* NEWS, doc/langref.txt, stap.1.in: Document it.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1,5 +1,11 @@ * What's new +- A new construct for error handling is available. It is similar to c++ + exception catching, using try and catch as new keywords. Within a handler + or function, the following is valid and may be nested: + try { /* arbitrary statements */ } + catch (er) { /* e.g. println("caught error ", er) */ } + - A new command line flag '-W' forces systemtap to abort translation of a script if any warnings are produced. It is similar to gcc's -Werror. (If '-w' is also supplied to suppress warnings, it wins.) |