Mesa (master): glsl: Don' t choke when printing an anonymous function parameter

[Ian Romanick]

Module: Mesa
Branch: master
Commit: 174cef7fee7d400fc89a3ce68b7791d2aa3eb90f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=174cef7fee7d400fc89a3ce68b7791d2aa3eb90f

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Fri Jun 24 17:30:41 2011 -0700

glsl: Don't choke when printing an anonymous function parameter

NOTE: This is a candidate for the 7.10 and 7.11 branches.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38584
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/glsl/ir_print_visitor.cpp |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/src/glsl/ir_print_visitor.cpp b/src/glsl/ir_print_visitor.cpp
index 5b5409d..518910b 100644
--- a/src/glsl/ir_print_visitor.cpp
+++ b/src/glsl/ir_print_visitor.cpp
@@ -96,6 +96,16 @@ void ir_print_visitor::indent(void)
 const char *
 ir_print_visitor::unique_name(ir_variable *var)
 {
+   /* var->name can be NULL in function prototypes when a type is given for a
+    * parameter but no name is given.  In that case, just return an empty
+    * string.  Don't worry about tracking the generated name in the printable
+    * names hash because this is the only scope where it can ever appear.
+    */
+   if (var->name == NULL) {
+      static unsigned arg = 1;
+      return ralloc_asprintf(this->mem_ctx, "parameter@%u", arg++);
+   }
+
    /* Do we already have a name for this variable? */
    const char *name = (const char *) hash_table_find(this->printable_names, var);
    if (name != NULL)