On Tuesday 15 May 2007 1:42 pm, Rainer Machne wrote: > Hi, > > I am currently trying to integrate TCC in our software. It so far works > great and we get very nice performance enhancements. > > These emails in your archive are related to my problem, I think: > > http://lists.gnu.org/archive/html/tinycc-devel/2005-10/msg00047.html > http://lists.gnu.org/archive/html/tinycc-devel/2003-05/msg00003.html > http://lists.gnu.org/archive/html/tinycc-devel/2005-06/msg00024.html > > > I have to use multiple states (created with tcc_new) in my program, and > it works fine. > > Only when the states are freed (with tcc_delete), I get a segmentation > fault, with a glibc error messages, either "munmap_chunk(): invalid > pointer: ..." or " double free or corruption".
I've been seeing those even without multiple states. I've recently started collecting bug demonstrations at http://landley.net/code/tinycc/bugs that I hope to understand the code well enough to fix someday. I printed out a copy of tcc.c as it was when I started my tree, and in my copious free time (of which I have none), I've been reading through it line by line. I've read about the first 20% and the last 5%, but that leaves most of it in the middle I'm still really vague about. Plus the add-ons like the assembler and elf stuff and so on. > As an example I included a second state in the libtcc_test.c program, > see attachment. Um, never having used libtcc before, I tried editing the #include to not have a "../" in it, and then did this: > [EMAIL PROTECTED]:~/tinycc/tinycc$ tcc -L. libtcc_test.c -ltcc1 > tcc: undefined symbol 'tcc_new' > tcc: undefined symbol 'tcc_set_output_type' > tcc: undefined symbol 'tcc_compile_string' > tcc: undefined symbol 'tcc_add_symbol' > tcc: undefined symbol 'tcc_relocate' > tcc: undefined symbol 'tcc_get_symbol' > tcc: undefined symbol 'tcc_delete' I'm obviously doing something wrong, but I'm not sure what. Could you give me a build sequence for this, please? > I am using the tinycc-rl-1.0.0 branch in Fedora. *blinks* Ok. :) > Are there any patches for this, yet? Should I use another version of TCC? The mercurial branch of the above (http://landley.net/hg/tinycc) has several more fixes (and screwed up build dependencies so it recompiles the thing again during the "install" phase, I need to fix that...). But none of the fixes have to do with memory allocation. > Thanks, > Rainer Machne Rob _______________________________________________ Tinycc-devel mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/tinycc-devel
