* Changes in GCC 4 compile time computation of constants affects quite a few examples: calc.c - fixed badpow.c * Updates for gcc 4.3 On other hand I've been testing examples of code. I'm using gcc 4.3 to do it. I've found more discrepances: ** TODO Page 23 I can execute ./a.out without problems. ** TODO One observation in page 43 is that only when ulimit -c unlimited is executed appears the core file. Another observation, in the chapter 9 the tells about the number of version, we can update it. ** TODO Pag 73: with "gcc -Wall -fsigned-char signed.c doesn't appear warnings ** TODO Pag 77: there are error in gcc -Wall -g loop.c, I can't execute ./a.out ** DONE Pag 91: I've updated some option in ld command: ld -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/gcc/i486-linux-gnu/4.3/crtbegin.o -L/usr/lib/gcc/i486-linux-gnu/4.3 hello.o -lgcc -lgcc_eh -lc /usr/lib/gcc/i486-linux-gnu/4.3/crtend.o /usr/lib/crtn.o ** TODO Pag 95: I'd include the strings command in this chapter. ** TODO Pag 98: I've troubles to reproduce these error messages... ** DONE Pages 53, 54 the source file is optim.c instead of test.c. CLOSED: [2009-06-03 mié 14:19] ** File naming scheme These are controlled by the makeexamples.pl script, maybe we need a better scheme (perhaps using some kind of annotation in the file to indicate the correct filename) *** Pag 71: exists fptest2.c instead of fptest.c *** Pag 82,83: exist main3.c instead of main.c *** Pag 76: In examples-1.1/09 doesn't exist hello.c *** Pag 95: examples-1.1/12 doesn't exist * TODO Highlight important changes in release notes Another task you could do is to check all the changes in gcc-4 relevant to the book. They are documented in the following pages: http://gcc.gnu.org/gcc-4.0/changes.html http://gcc.gnu.org/gcc-4.1/changes.html http://gcc.gnu.org/gcc-4.2/changes.html http://gcc.gnu.org/gcc-4.3/changes.html http://gcc.gnu.org/gcc-4.3/porting_to.html which I've downloaded and put in the bzr repository in the changes/ subdirectory. ! What you could do is edit the files and highlight the important ! sections, e.g. by marking the start of the relevant lines (like this ! paragraph). The important sections are the major new features, ! changes and incompatibilities that affect the subjects covered by ! the book. The changes I am interested in are: - EITHER a new feature of wide interest to general users and beginners - OR a change that is directly related to something in the book The "Caveats" and "Other significant improvements" sections are particularly important. You can ignore a lot of stuff: - The book doesn't cover java/fortran/ADA etc so these are irrelevant. - For C++ I only care if it affects something mentioned in the book (90% of changes related to the C++ language/library are therefore irrelevant) - I'm not interested interested in CPU specific changes unless specifically different from something in the book (e.g. x86 floating point) ---------------------------------------------------------------------- * TODO Make a general web search for articles about GCC4 and its new features Restrict the search to articles published on reputable sites like Developerworks, LWN, O'Reilly and any others you can think of. Send me a list of any articles you find and also read them yourself. * TODO Scan the list archives for common errors and problems Scan the archives of the gcc-help mailing list for common errors reported by users since gcc4 was released (April 2005). I'd like a list of problems of interest to beginning users not covered in the book. Make a selection of months, and check all the messages in that month. There is no need to read every month. e.g. start with May 2005, May 2006, May 2007, May 2008, May 2009. For each month, create an entry in this file any links to the start of relevant threads and a 1-2 line description of what's interesting about it. You can find the archives in various formats at: http://gcc.gnu.org/ml/gcc-help/ http://dir.gmane.org/gmane.comp.gcc.help Note: a lot of things you can *ignore* are - GCC build/configuration issues - internal compiler errors (so there are a lot of messages you can skip). ---------------------------------------------------------------------- * Brian's old notes not including a header file passing an argument of the incorrect type not turning on warnings not linking with the correct library warning: value computed is not used EXAMPLE; for (i = 0, i < 10; i++) instead of for (i = 0; i < 10; i++) forward.c:53: warning: assignment from incompatible pointer type ---------------------------------------------------------------------- The best article is "Get to know GCC4" ( http://www.ibm.com/developerworks/linux/library/l-gcc4/index.html?S_TACT=105AGX01&S_CMP=LP). You've a summary of each release in the core changes, very useful. Tree SSA: A New Optimization Infrastructure for GCC, Autovectorization in GCCand introduction to OpenMP are interesting if you are excited with Get to know GCC4. Sun Studio 12 vs. GCC3 vs. GCC4 Benchmarks ( http://www.phoronix.com/scan.php?page=article&item=sun_studio_gcc&num=6) is a curious article to OpenSolaris users. Regards.