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| <hr> |
| <a name="Print-Settings-1"></a> |
| <h3 class="section">10.8 Print Settings</h3> |
| |
| <a name="index-format-options"></a> |
| <a name="index-print-settings"></a> |
| <p><small>GDB</small> provides the following ways to control how arrays, structures, |
| and symbols are printed. |
| </p> |
| <p>These settings are useful for debugging programs in any language: |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-set-print"></a> |
| </dd> |
| <dt><code>set print address</code></dt> |
| <dt><code>set print address on</code></dt> |
| <dd><a name="index-print_002fdon_0027t-print-memory-addresses"></a> |
| <p><small>GDB</small> prints memory addresses showing the location of stack |
| traces, structure values, pointer values, breakpoints, and so forth, |
| even when it also displays the contents of those addresses. The default |
| is <code>on</code>. For example, this is what a stack frame display looks like with |
| <code>set print address on</code>: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) f |
| #0 set_quotes (lq=0x34c78 "<<", rq=0x34c88 ">>") |
| at input.c:530 |
| 530 if (lquote != def_lquote) |
| </pre></div> |
| |
| </dd> |
| <dt><code>set print address off</code></dt> |
| <dd><p>Do not print addresses when displaying their contents. For example, |
| this is the same stack frame displayed with <code>set print address off</code>: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) set print addr off |
| (gdb) f |
| #0 set_quotes (lq="<<", rq=">>") at input.c:530 |
| 530 if (lquote != def_lquote) |
| </pre></div> |
| |
| <p>You can use ‘<samp>set print address off</samp>’ to eliminate all machine |
| dependent displays from the <small>GDB</small> interface. For example, with |
| <code>print address off</code>, you should get the same text for backtraces on |
| all machines—whether or not they involve pointer arguments. |
| </p> |
| <a name="index-show-print"></a> |
| </dd> |
| <dt><code>show print address</code></dt> |
| <dd><p>Show whether or not addresses are to be printed. |
| </p></dd> |
| </dl> |
| |
| <p>When <small>GDB</small> prints a symbolic address, it normally prints the |
| closest earlier symbol plus an offset. If that symbol does not uniquely |
| identify the address (for example, it is a name whose scope is a single |
| source file), you may need to clarify. One way to do this is with |
| <code>info line</code>, for example ‘<samp>info line *0x4537</samp>’. Alternately, |
| you can set <small>GDB</small> to print the source file and line number when |
| it prints a symbolic address: |
| </p> |
| <dl compact="compact"> |
| <dt><code>set print symbol-filename on</code></dt> |
| <dd><a name="index-source-file-and-line-of-a-symbol"></a> |
| <a name="index-symbol_002c-source-file-and-line"></a> |
| <p>Tell <small>GDB</small> to print the source file name and line number of a |
| symbol in the symbolic form of an address. |
| </p> |
| </dd> |
| <dt><code>set print symbol-filename off</code></dt> |
| <dd><p>Do not print source file name and line number of a symbol. This is the |
| default. |
| </p> |
| </dd> |
| <dt><code>show print symbol-filename</code></dt> |
| <dd><p>Show whether or not <small>GDB</small> will print the source file name and |
| line number of a symbol in the symbolic form of an address. |
| </p></dd> |
| </dl> |
| |
| <p>Another situation where it is helpful to show symbol filenames and line |
| numbers is when disassembling code; <small>GDB</small> shows you the line |
| number and source file that corresponds to each instruction. |
| </p> |
| <p>Also, you may wish to see the symbolic form only if the address being |
| printed is reasonably close to the closest earlier symbol: |
| </p> |
| <dl compact="compact"> |
| <dt><code>set print max-symbolic-offset <var>max-offset</var></code></dt> |
| <dt><code>set print max-symbolic-offset unlimited</code></dt> |
| <dd><a name="index-maximum-value-for-offset-of-closest-symbol"></a> |
| <p>Tell <small>GDB</small> to only display the symbolic form of an address if the |
| offset between the closest earlier symbol and the address is less than |
| <var>max-offset</var>. The default is <code>unlimited</code>, which tells <small>GDB</small> |
| to always print the symbolic form of an address if any symbol precedes |
| it. Zero is equivalent to <code>unlimited</code>. |
| </p> |
| </dd> |
| <dt><code>show print max-symbolic-offset</code></dt> |
| <dd><p>Ask how large the maximum offset is that <small>GDB</small> prints in a |
| symbolic address. |
| </p></dd> |
| </dl> |
| |
| <a name="index-wild-pointer_002c-interpreting"></a> |
| <a name="index-pointer_002c-finding-referent"></a> |
| <p>If you have a pointer and you are not sure where it points, try |
| ‘<samp>set print symbol-filename on</samp>’. Then you can determine the name |
| and source file location of the variable where it points, using |
| ‘<samp>p/a <var>pointer</var></samp>’. This interprets the address in symbolic form. |
| For example, here <small>GDB</small> shows that a variable <code>ptt</code> points |
| at another variable <code>t</code>, defined in <samp>hi2.c</samp>: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) set print symbol-filename on |
| (gdb) p/a ptt |
| $4 = 0xe008 <t in hi2.c> |
| </pre></div> |
| |
| <blockquote> |
| <p><em>Warning:</em> For pointers that point to a local variable, ‘<samp>p/a</samp>’ |
| does not show the symbol name and filename of the referent, even with |
| the appropriate <code>set print</code> options turned on. |
| </p></blockquote> |
| |
| <p>You can also enable ‘<samp>/a</samp>’-like formatting all the time using |
| ‘<samp>set print symbol on</samp>’: |
| </p> |
| <dl compact="compact"> |
| <dt><code>set print symbol on</code></dt> |
| <dd><p>Tell <small>GDB</small> to print the symbol corresponding to an address, if |
| one exists. |
| </p> |
| </dd> |
| <dt><code>set print symbol off</code></dt> |
| <dd><p>Tell <small>GDB</small> not to print the symbol corresponding to an |
| address. In this mode, <small>GDB</small> will still print the symbol |
| corresponding to pointers to functions. This is the default. |
| </p> |
| </dd> |
| <dt><code>show print symbol</code></dt> |
| <dd><p>Show whether <small>GDB</small> will display the symbol corresponding to an |
| address. |
| </p></dd> |
| </dl> |
| |
| <p>Other settings control how different kinds of objects are printed: |
| </p> |
| <dl compact="compact"> |
| <dt><code>set print array</code></dt> |
| <dt><code>set print array on</code></dt> |
| <dd><a name="index-pretty-print-arrays"></a> |
| <p>Pretty print arrays. This format is more convenient to read, |
| but uses more space. The default is off. |
| </p> |
| </dd> |
| <dt><code>set print array off</code></dt> |
| <dd><p>Return to compressed format for arrays. |
| </p> |
| </dd> |
| <dt><code>show print array</code></dt> |
| <dd><p>Show whether compressed or pretty format is selected for displaying |
| arrays. |
| </p> |
| <a name="index-print-array-indexes"></a> |
| </dd> |
| <dt><code>set print array-indexes</code></dt> |
| <dt><code>set print array-indexes on</code></dt> |
| <dd><p>Print the index of each element when displaying arrays. May be more |
| convenient to locate a given element in the array or quickly find the |
| index of a given element in that printed array. The default is off. |
| </p> |
| </dd> |
| <dt><code>set print array-indexes off</code></dt> |
| <dd><p>Stop printing element indexes when displaying arrays. |
| </p> |
| </dd> |
| <dt><code>show print array-indexes</code></dt> |
| <dd><p>Show whether the index of each element is printed when displaying |
| arrays. |
| </p> |
| </dd> |
| <dt><code>set print elements <var>number-of-elements</var></code></dt> |
| <dt><code>set print elements unlimited</code></dt> |
| <dd><a name="index-number-of-array-elements-to-print"></a> |
| <a name="index-limit-on-number-of-printed-array-elements"></a> |
| <p>Set a limit on how many elements of an array <small>GDB</small> will print. |
| If <small>GDB</small> is printing a large array, it stops printing after it has |
| printed the number of elements set by the <code>set print elements</code> command. |
| This limit also applies to the display of strings. |
| When <small>GDB</small> starts, this limit is set to 200. |
| Setting <var>number-of-elements</var> to <code>unlimited</code> or zero means |
| that the number of elements to print is unlimited. |
| </p> |
| </dd> |
| <dt><code>show print elements</code></dt> |
| <dd><p>Display the number of elements of a large array that <small>GDB</small> will print. |
| If the number is 0, then the printing is unlimited. |
| </p> |
| </dd> |
| <dt><code>set print frame-arguments <var>value</var></code></dt> |
| <dd><a name="index-set-print-frame_002darguments"></a> |
| <a name="index-printing-frame-argument-values"></a> |
| <a name="index-print-all-frame-argument-values"></a> |
| <a name="index-print-frame-argument-values-for-scalars-only"></a> |
| <a name="index-do-not-print-frame-argument-values"></a> |
| <p>This command allows to control how the values of arguments are printed |
| when the debugger prints a frame (see <a href="Frames.html#Frames">Frames</a>). The possible |
| values are: |
| </p> |
| <dl compact="compact"> |
| <dt><code>all</code></dt> |
| <dd><p>The values of all arguments are printed. |
| </p> |
| </dd> |
| <dt><code>scalars</code></dt> |
| <dd><p>Print the value of an argument only if it is a scalar. The value of more |
| complex arguments such as arrays, structures, unions, etc, is replaced |
| by <code>…</code>. This is the default. Here is an example where |
| only scalar arguments are shown: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">#1 0x08048361 in call_me (i=3, s=…, ss=0xbf8d508c, u=…, e=green) |
| at frame-args.c:23 |
| </pre></div> |
| |
| </dd> |
| <dt><code>none</code></dt> |
| <dd><p>None of the argument values are printed. Instead, the value of each argument |
| is replaced by <code>…</code>. In this case, the example above now becomes: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">#1 0x08048361 in call_me (i=…, s=…, ss=…, u=…, e=…) |
| at frame-args.c:23 |
| </pre></div> |
| </dd> |
| </dl> |
| |
| <p>By default, only scalar arguments are printed. This command can be used |
| to configure the debugger to print the value of all arguments, regardless |
| of their type. However, it is often advantageous to not print the value |
| of more complex parameters. For instance, it reduces the amount of |
| information printed in each frame, making the backtrace more readable. |
| Also, it improves performance when displaying Ada frames, because |
| the computation of large arguments can sometimes be CPU-intensive, |
| especially in large applications. Setting <code>print frame-arguments</code> |
| to <code>scalars</code> (the default) or <code>none</code> avoids this computation, |
| thus speeding up the display of each Ada frame. |
| </p> |
| </dd> |
| <dt><code>show print frame-arguments</code></dt> |
| <dd><p>Show how the value of arguments should be displayed when printing a frame. |
| </p> |
| </dd> |
| <dt><code>set print raw frame-arguments on</code></dt> |
| <dd><p>Print frame arguments in raw, non pretty-printed, form. |
| </p> |
| </dd> |
| <dt><code>set print raw frame-arguments off</code></dt> |
| <dd><p>Print frame arguments in pretty-printed form, if there is a pretty-printer |
| for the value (see <a href="Pretty-Printing.html#Pretty-Printing">Pretty Printing</a>), |
| otherwise print the value in raw form. |
| This is the default. |
| </p> |
| </dd> |
| <dt><code>show print raw frame-arguments</code></dt> |
| <dd><p>Show whether to print frame arguments in raw form. |
| </p> |
| <a name="set-print-entry_002dvalues"></a></dd> |
| <dt><code>set print entry-values <var>value</var></code></dt> |
| <dd><a name="index-set-print-entry_002dvalues"></a> |
| <p>Set printing of frame argument values at function entry. In some cases |
| <small>GDB</small> can determine the value of function argument which was passed by |
| the function caller, even if the value was modified inside the called function |
| and therefore is different. With optimized code, the current value could be |
| unavailable, but the entry value may still be known. |
| </p> |
| <p>The default value is <code>default</code> (see below for its description). Older |
| <small>GDB</small> behaved as with the setting <code>no</code>. Compilers not supporting |
| this feature will behave in the <code>default</code> setting the same way as with the |
| <code>no</code> setting. |
| </p> |
| <p>This functionality is currently supported only by DWARF 2 debugging format and |
| the compiler has to produce ‘<samp>DW_TAG_GNU_call_site</samp>’ tags. With |
| <small>GCC</small>, you need to specify <samp>-O -g</samp> during compilation, to get |
| this information. |
| </p> |
| <p>The <var>value</var> parameter can be one of the following: |
| </p> |
| <dl compact="compact"> |
| <dt><code>no</code></dt> |
| <dd><p>Print only actual parameter values, never print values from function entry |
| point. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val=5) |
| #0 different (val=6) |
| #0 lost (val=<optimized out>) |
| #0 born (val=10) |
| #0 invalid (val=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>only</code></dt> |
| <dd><p>Print only parameter values from function entry point. The actual parameter |
| values are never printed. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val@entry=5) |
| #0 different (val@entry=5) |
| #0 lost (val@entry=5) |
| #0 born (val@entry=<optimized out>) |
| #0 invalid (val@entry=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>preferred</code></dt> |
| <dd><p>Print only parameter values from function entry point. If value from function |
| entry point is not known while the actual value is known, print the actual |
| value for such parameter. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val@entry=5) |
| #0 different (val@entry=5) |
| #0 lost (val@entry=5) |
| #0 born (val=10) |
| #0 invalid (val@entry=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>if-needed</code></dt> |
| <dd><p>Print actual parameter values. If actual parameter value is not known while |
| value from function entry point is known, print the entry point value for such |
| parameter. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val=5) |
| #0 different (val=6) |
| #0 lost (val@entry=5) |
| #0 born (val=10) |
| #0 invalid (val=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>both</code></dt> |
| <dd><p>Always print both the actual parameter value and its value from function entry |
| point, even if values of one or both are not available due to compiler |
| optimizations. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val=5, val@entry=5) |
| #0 different (val=6, val@entry=5) |
| #0 lost (val=<optimized out>, val@entry=5) |
| #0 born (val=10, val@entry=<optimized out>) |
| #0 invalid (val=<optimized out>, val@entry=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>compact</code></dt> |
| <dd><p>Print the actual parameter value if it is known and also its value from |
| function entry point if it is known. If neither is known, print for the actual |
| value <code><optimized out></code>. If not in MI mode (see <a href="GDB_002fMI.html#GDB_002fMI">GDB/MI</a>) and if both |
| values are known and identical, print the shortened |
| <code>param=param@entry=VALUE</code> notation. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val=val@entry=5) |
| #0 different (val=6, val@entry=5) |
| #0 lost (val@entry=5) |
| #0 born (val=10) |
| #0 invalid (val=<optimized out>) |
| </pre></div> |
| |
| </dd> |
| <dt><code>default</code></dt> |
| <dd><p>Always print the actual parameter value. Print also its value from function |
| entry point, but only if it is known. If not in MI mode (see <a href="GDB_002fMI.html#GDB_002fMI">GDB/MI</a>) and |
| if both values are known and identical, print the shortened |
| <code>param=param@entry=VALUE</code> notation. |
| </p><div class="smallexample"> |
| <pre class="smallexample">#0 equal (val=val@entry=5) |
| #0 different (val=6, val@entry=5) |
| #0 lost (val=<optimized out>, val@entry=5) |
| #0 born (val=10) |
| #0 invalid (val=<optimized out>) |
| </pre></div> |
| </dd> |
| </dl> |
| |
| <p>For analysis messages on possible failures of frame argument values at function |
| entry resolution see <a href="Tail-Call-Frames.html#set-debug-entry_002dvalues">set debug entry-values</a>. |
| </p> |
| </dd> |
| <dt><code>show print entry-values</code></dt> |
| <dd><p>Show the method being used for printing of frame argument values at function |
| entry. |
| </p> |
| </dd> |
| <dt><code>set print repeats <var>number-of-repeats</var></code></dt> |
| <dt><code>set print repeats unlimited</code></dt> |
| <dd><a name="index-repeated-array-elements"></a> |
| <p>Set the threshold for suppressing display of repeated array |
| elements. When the number of consecutive identical elements of an |
| array exceeds the threshold, <small>GDB</small> prints the string |
| <code>"<repeats <var>n</var> times>"</code>, where <var>n</var> is the number of |
| identical repetitions, instead of displaying the identical elements |
| themselves. Setting the threshold to <code>unlimited</code> or zero will |
| cause all elements to be individually printed. The default threshold |
| is 10. |
| </p> |
| </dd> |
| <dt><code>show print repeats</code></dt> |
| <dd><p>Display the current threshold for printing repeated identical |
| elements. |
| </p> |
| </dd> |
| <dt><code>set print null-stop</code></dt> |
| <dd><a name="index-NULL-elements-in-arrays"></a> |
| <p>Cause <small>GDB</small> to stop printing the characters of an array when the first |
| <small>NULL</small> is encountered. This is useful when large arrays actually |
| contain only short strings. |
| The default is off. |
| </p> |
| </dd> |
| <dt><code>show print null-stop</code></dt> |
| <dd><p>Show whether <small>GDB</small> stops printing an array on the first |
| <small>NULL</small> character. |
| </p> |
| </dd> |
| <dt><code>set print pretty on</code></dt> |
| <dd><a name="index-print-structures-in-indented-form"></a> |
| <a name="index-indentation-in-structure-display"></a> |
| <p>Cause <small>GDB</small> to print structures in an indented format with one member |
| per line, like this: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">$1 = { |
| next = 0x0, |
| flags = { |
| sweet = 1, |
| sour = 1 |
| }, |
| meat = 0x54 "Pork" |
| } |
| </pre></div> |
| |
| </dd> |
| <dt><code>set print pretty off</code></dt> |
| <dd><p>Cause <small>GDB</small> to print structures in a compact format, like this: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">$1 = {next = 0x0, flags = {sweet = 1, sour = 1}, \ |
| meat = 0x54 "Pork"} |
| </pre></div> |
| |
| <p>This is the default format. |
| </p> |
| </dd> |
| <dt><code>show print pretty</code></dt> |
| <dd><p>Show which format <small>GDB</small> is using to print structures. |
| </p> |
| </dd> |
| <dt><code>set print sevenbit-strings on</code></dt> |
| <dd><a name="index-eight_002dbit-characters-in-strings"></a> |
| <a name="index-octal-escapes-in-strings"></a> |
| <p>Print using only seven-bit characters; if this option is set, |
| <small>GDB</small> displays any eight-bit characters (in strings or |
| character values) using the notation <code>\</code><var>nnn</var>. This setting is |
| best if you are working in English (<small>ASCII</small>) and you use the |
| high-order bit of characters as a marker or “meta” bit. |
| </p> |
| </dd> |
| <dt><code>set print sevenbit-strings off</code></dt> |
| <dd><p>Print full eight-bit characters. This allows the use of more |
| international character sets, and is the default. |
| </p> |
| </dd> |
| <dt><code>show print sevenbit-strings</code></dt> |
| <dd><p>Show whether or not <small>GDB</small> is printing only seven-bit characters. |
| </p> |
| </dd> |
| <dt><code>set print union on</code></dt> |
| <dd><a name="index-unions-in-structures_002c-printing"></a> |
| <p>Tell <small>GDB</small> to print unions which are contained in structures |
| and other unions. This is the default setting. |
| </p> |
| </dd> |
| <dt><code>set print union off</code></dt> |
| <dd><p>Tell <small>GDB</small> not to print unions which are contained in |
| structures and other unions. <small>GDB</small> will print <code>"{...}"</code> |
| instead. |
| </p> |
| </dd> |
| <dt><code>show print union</code></dt> |
| <dd><p>Ask <small>GDB</small> whether or not it will print unions which are contained in |
| structures and other unions. |
| </p> |
| <p>For example, given the declarations |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">typedef enum {Tree, Bug} Species; |
| typedef enum {Big_tree, Acorn, Seedling} Tree_forms; |
| typedef enum {Caterpillar, Cocoon, Butterfly} |
| Bug_forms; |
| |
| struct thing { |
| Species it; |
| union { |
| Tree_forms tree; |
| Bug_forms bug; |
| } form; |
| }; |
| |
| struct thing foo = {Tree, {Acorn}}; |
| </pre></div> |
| |
| <p>with <code>set print union on</code> in effect ‘<samp>p foo</samp>’ would print |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">$1 = {it = Tree, form = {tree = Acorn, bug = Cocoon}} |
| </pre></div> |
| |
| <p>and with <code>set print union off</code> in effect it would print |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">$1 = {it = Tree, form = {...}} |
| </pre></div> |
| |
| <p><code>set print union</code> affects programs written in C-like languages |
| and in Pascal. |
| </p></dd> |
| </dl> |
| |
| <p>These settings are of interest when debugging C<tt>++</tt> programs: |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-demangling-C_002b_002b-names"></a> |
| </dd> |
| <dt><code>set print demangle</code></dt> |
| <dt><code>set print demangle on</code></dt> |
| <dd><p>Print C<tt>++</tt> names in their source form rather than in the encoded |
| (“mangled”) form passed to the assembler and linker for type-safe |
| linkage. The default is on. |
| </p> |
| </dd> |
| <dt><code>show print demangle</code></dt> |
| <dd><p>Show whether C<tt>++</tt> names are printed in mangled or demangled form. |
| </p> |
| </dd> |
| <dt><code>set print asm-demangle</code></dt> |
| <dt><code>set print asm-demangle on</code></dt> |
| <dd><p>Print C<tt>++</tt> names in their source form rather than their mangled form, even |
| in assembler code printouts such as instruction disassemblies. |
| The default is off. |
| </p> |
| </dd> |
| <dt><code>show print asm-demangle</code></dt> |
| <dd><p>Show whether C<tt>++</tt> names in assembly listings are printed in mangled |
| or demangled form. |
| </p> |
| <a name="index-C_002b_002b-symbol-decoding-style"></a> |
| <a name="index-symbol-decoding-style_002c-C_002b_002b"></a> |
| <a name="index-set-demangle_002dstyle"></a> |
| </dd> |
| <dt><code>set demangle-style <var>style</var></code></dt> |
| <dd><p>Choose among several encoding schemes used by different compilers to |
| represent C<tt>++</tt> names. The choices for <var>style</var> are currently: |
| </p> |
| <dl compact="compact"> |
| <dt><code>auto</code></dt> |
| <dd><p>Allow <small>GDB</small> to choose a decoding style by inspecting your program. |
| This is the default. |
| </p> |
| </dd> |
| <dt><code>gnu</code></dt> |
| <dd><p>Decode based on the <small>GNU</small> C<tt>++</tt> compiler (<code>g++</code>) encoding algorithm. |
| </p> |
| </dd> |
| <dt><code>hp</code></dt> |
| <dd><p>Decode based on the HP ANSI C<tt>++</tt> (<code>aCC</code>) encoding algorithm. |
| </p> |
| </dd> |
| <dt><code>lucid</code></dt> |
| <dd><p>Decode based on the Lucid C<tt>++</tt> compiler (<code>lcc</code>) encoding algorithm. |
| </p> |
| </dd> |
| <dt><code>arm</code></dt> |
| <dd><p>Decode using the algorithm in the <cite>C<tt>++</tt> Annotated Reference Manual</cite>. |
| <strong>Warning:</strong> this setting alone is not sufficient to allow |
| debugging <code>cfront</code>-generated executables. <small>GDB</small> would |
| require further enhancement to permit that. |
| </p> |
| </dd> |
| </dl> |
| <p>If you omit <var>style</var>, you will see a list of possible formats. |
| </p> |
| </dd> |
| <dt><code>show demangle-style</code></dt> |
| <dd><p>Display the encoding style currently in use for decoding C<tt>++</tt> symbols. |
| </p> |
| </dd> |
| <dt><code>set print object</code></dt> |
| <dt><code>set print object on</code></dt> |
| <dd><a name="index-derived-type-of-an-object_002c-printing"></a> |
| <a name="index-display-derived-types"></a> |
| <p>When displaying a pointer to an object, identify the <em>actual</em> |
| (derived) type of the object rather than the <em>declared</em> type, using |
| the virtual function table. Note that the virtual function table is |
| required—this feature can only work for objects that have run-time |
| type identification; a single virtual method in the object’s declared |
| type is sufficient. Note that this setting is also taken into account when |
| working with variable objects via MI (see <a href="GDB_002fMI.html#GDB_002fMI">GDB/MI</a>). |
| </p> |
| </dd> |
| <dt><code>set print object off</code></dt> |
| <dd><p>Display only the declared type of objects, without reference to the |
| virtual function table. This is the default setting. |
| </p> |
| </dd> |
| <dt><code>show print object</code></dt> |
| <dd><p>Show whether actual, or declared, object types are displayed. |
| </p> |
| </dd> |
| <dt><code>set print static-members</code></dt> |
| <dt><code>set print static-members on</code></dt> |
| <dd><a name="index-static-members-of-C_002b_002b-objects"></a> |
| <p>Print static members when displaying a C<tt>++</tt> object. The default is on. |
| </p> |
| </dd> |
| <dt><code>set print static-members off</code></dt> |
| <dd><p>Do not print static members when displaying a C<tt>++</tt> object. |
| </p> |
| </dd> |
| <dt><code>show print static-members</code></dt> |
| <dd><p>Show whether C<tt>++</tt> static members are printed or not. |
| </p> |
| </dd> |
| <dt><code>set print pascal_static-members</code></dt> |
| <dt><code>set print pascal_static-members on</code></dt> |
| <dd><a name="index-static-members-of-Pascal-objects"></a> |
| <a name="index-Pascal-objects_002c-static-members-display"></a> |
| <p>Print static members when displaying a Pascal object. The default is on. |
| </p> |
| </dd> |
| <dt><code>set print pascal_static-members off</code></dt> |
| <dd><p>Do not print static members when displaying a Pascal object. |
| </p> |
| </dd> |
| <dt><code>show print pascal_static-members</code></dt> |
| <dd><p>Show whether Pascal static members are printed or not. |
| </p> |
| </dd> |
| <dt><code>set print vtbl</code></dt> |
| <dt><code>set print vtbl on</code></dt> |
| <dd><a name="index-pretty-print-C_002b_002b-virtual-function-tables"></a> |
| <a name="index-virtual-functions-_0028C_002b_002b_0029-display"></a> |
| <a name="index-VTBL-display"></a> |
| <p>Pretty print C<tt>++</tt> virtual function tables. The default is off. |
| (The <code>vtbl</code> commands do not work on programs compiled with the HP |
| ANSI C<tt>++</tt> compiler (<code>aCC</code>).) |
| </p> |
| </dd> |
| <dt><code>set print vtbl off</code></dt> |
| <dd><p>Do not pretty print C<tt>++</tt> virtual function tables. |
| </p> |
| </dd> |
| <dt><code>show print vtbl</code></dt> |
| <dd><p>Show whether C<tt>++</tt> virtual function tables are pretty printed, or not. |
| </p></dd> |
| </dl> |
| |
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