diff options
Diffstat (limited to 'libphobos/libdruntime/gcc/attributes.d')
| -rw-r--r-- | libphobos/libdruntime/gcc/attributes.d | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libphobos/libdruntime/gcc/attributes.d b/libphobos/libdruntime/gcc/attributes.d index 09f684c..ca066ce 100644 --- a/libphobos/libdruntime/gcc/attributes.d +++ b/libphobos/libdruntime/gcc/attributes.d @@ -425,6 +425,30 @@ auto target_clones(A...)(A arguments) enum used = attribute("used"); /** + * The `@visibility` attribute affects the linkage of the declaration to which + * it is attached. It can be applied to variables, types, and functions. + * + * There are four supported visibility_type values: `default`, `hidden`, + * `protected`, or `internal` visibility. + * + * Example: + * --- + * import gcc.attributes; + * + * @visibility("protected") void func() { } + * --- + */ +auto visibility(string visibilityName) +{ + return attribute("visibility", visibilityName); +} + +auto visibility(A...)(A arguments) +{ + assert(false, "visibility attribute argument not a string constant"); +} + +/** * The `@weak` attribute causes a declaration of an external symbol to be * emitted as a weak symbol rather than a global. This is primarily useful in * defining library functions that can be overridden in user code, though it can @@ -543,6 +567,16 @@ enum dynamicCompileEmit = false; enum fastmath = optimize("Ofast"); /** + * Sets the visibility of a function or global variable to "hidden". + * Such symbols aren't directly accessible from outside the DSO + * (executable or DLL/.so/.dylib) and are resolved inside the DSO + * during linking. If unreferenced within the DSO, the linker can + * strip a hidden symbol. + * An `export` visibility overrides this attribute. + */ +enum hidden = visibility("hidden"); + +/** * Adds GCC's "naked" attribute to a function, disabling function prologue / * epilogue emission. * Intended to be used in combination with basic `asm` statement. While using |