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| <title>Debugging with GDB: Go</title> |
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| <a name="Go-1"></a> |
| <h4 class="subsection">15.4.3 Go</h4> |
| |
| <a name="index-Go-_0028programming-language_0029"></a> |
| <p><small>GDB</small> can be used to debug programs written in Go and compiled with |
| <samp>gccgo</samp> or <samp>6g</samp> compilers. |
| </p> |
| <p>Here is a summary of the Go-specific features and restrictions: |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-current-Go-package"></a> |
| </dd> |
| <dt><code>The current Go package</code></dt> |
| <dd><p>The name of the current package does not need to be specified when |
| specifying global variables and functions. |
| </p> |
| <p>For example, given the program: |
| </p> |
| <div class="example"> |
| <pre class="example">package main |
| var myglob = "Shall we?" |
| func main () { |
| // ... |
| } |
| </pre></div> |
| |
| <p>When stopped inside <code>main</code> either of these work: |
| </p> |
| <div class="example"> |
| <pre class="example">(gdb) p myglob |
| (gdb) p main.myglob |
| </pre></div> |
| |
| <a name="index-builtin-Go-types"></a> |
| </dd> |
| <dt><code>Builtin Go types</code></dt> |
| <dd><p>The <code>string</code> type is recognized by <small>GDB</small> and is printed |
| as a string. |
| </p> |
| <a name="index-builtin-Go-functions"></a> |
| </dd> |
| <dt><code>Builtin Go functions</code></dt> |
| <dd><p>The <small>GDB</small> expression parser recognizes the <code>unsafe.Sizeof</code> |
| function and handles it internally. |
| </p> |
| <a name="index-restrictions-on-Go-expressions"></a> |
| </dd> |
| <dt><code>Restrictions on Go expressions</code></dt> |
| <dd><p>All Go operators are supported except <code>&^</code>. |
| The Go <code>_</code> “blank identifier” is not supported. |
| Automatic dereferencing of pointers is not supported. |
| </p></dd> |
| </dl> |
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