diff options
Diffstat (limited to 'jbig2dec/memento.h')
| -rw-r--r-- | jbig2dec/memento.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/jbig2dec/memento.h b/jbig2dec/memento.h index d8cf5b34..b822479f 100644 --- a/jbig2dec/memento.h +++ b/jbig2dec/memento.h @@ -75,8 +75,7 @@ * An example: * Suppose we have a gs invocation that crashes with memory corruption. * * Build with -DMEMENTO. - * * In your debugger put breakpoints on Memento_inited and - * Memento_Breakpoint. + * * In your debugger put a breakpoint on Memento_breakpoint. * * Run the program. It will stop in Memento_inited. * * Execute Memento_setParanoia(1); (In VS use Ctrl-Alt-Q). (Note #1) * * Continue execution. @@ -92,9 +91,9 @@ * and 1458 - so if we rerun and stop the program at 1457, we can then * step through, possibly with a data breakpoint at 0x172e710 and see * when it occurs. - * * So restart the program from the beginning. When we hit Memento_inited - * execute Memento_breakAt(1457); (and maybe Memento_setParanoia(1), or - * Memento_setParanoidAt(1457)) + * * So restart the program from the beginning. When we stop after + * initialisation execute Memento_breakAt(1457); (and maybe + * Memento_setParanoia(1), or Memento_setParanoidAt(1457)) * * Continue execution until we hit Memento_breakpoint. * * Now you can step through and watch the memory corruption happen. * @@ -157,6 +156,30 @@ * Both Windows and GCC provide separate new[] and delete[] operators * for arrays. Apparently some systems do not. If this is the case for * your system, define MEMENTO_CPP_NO_ARRAY_CONSTRUCTORS. + * + * "libbacktrace.so failed to load" + * + * In order to give nice backtraces on unix, Memento will try to use + * a libbacktrace dynamic library. If it can't find it, you'll see + * that warning, and your backtraces won't include file/line information. + * + * To fix this you'll need to build your own libbacktrace. Don't worry + * it's really easy: + * git clone git://github.com/ianlancetaylor/libbacktrace + * cd libbacktrace + * ./configure + * make + * + * This leaves the build .so as .libs/libbacktrace.so + * + * Memento will look for this on LD_LIBRARY_PATH, or in /opt/lib/, + * or in /lib/, or in /usr/lib/, or in /usr/local/lib/. I recommend + * using /opt/lib/ as this won't conflict with anything that you + * get via a package manager like apt. + * + * sudo mkdir /opt + * sudo mkdir /opt/lib + * sudo cp .libs/libbacktrace.so /opt/lib/ */ #ifndef MEMENTO_H @@ -238,6 +261,8 @@ void Memento_stopLeaking(void); int Memento_sequence(void); +int Memento_squeezing(void); + void Memento_fin(void); void Memento_bt(void); @@ -299,6 +324,7 @@ void Memento_bt(void); #define Memento_fin() do {} while (0) #define Memento_bt() do {} while (0) #define Memento_sequence() (0) +#define Memento_squeezing() (0) #endif /* MEMENTO */ |