From c9de313f1b6d0ee8d9304fc3fe11fb84ff494f12 Mon Sep 17 00:00:00 2001
From: Michal Krol <michal@vmware.com>
Date: Wed, 16 Sep 2009 20:28:20 +0200
Subject: [PATCH] slang: Propagate error messages from preprocessor.

---
 src/mesa/shader/slang/slang_compile.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c
index 8ea86756184..19fec53877f 100644
--- a/src/mesa/shader/slang/slang_compile.c
+++ b/src/mesa/shader/slang/slang_compile.c
@@ -2597,15 +2597,18 @@ compile_with_grammar(grammar id, const char *source, slang_code_unit * unit,
 
    memset(&options, 0, sizeof(options));
    if (sl_pp_purify(source, &options, &outbuf)) {
+      slang_info_log_error(infolog, "unable to preprocess the source");
       return GL_FALSE;
    }
 
    if (sl_pp_context_init(&context)) {
+      slang_info_log_error(infolog, "out of memory");
       free(outbuf);
       return GL_FALSE;
    }
 
    if (sl_pp_tokenise(&context, outbuf, &intokens)) {
+      slang_info_log_error(infolog, "%s", context.error_msg);
       sl_pp_context_destroy(&context);
       free(outbuf);
       return GL_FALSE;
@@ -2614,12 +2617,14 @@ compile_with_grammar(grammar id, const char *source, slang_code_unit * unit,
    free(outbuf);
 
    if (sl_pp_version(&context, intokens, &version, &tokens_eaten)) {
+      slang_info_log_error(infolog, "%s", context.error_msg);
       sl_pp_context_destroy(&context);
       free(intokens);
       return GL_FALSE;
    }
 
    if (sl_pp_process(&context, &intokens[tokens_eaten], &tokens)) {
+      slang_info_log_error(infolog, "%s", context.error_msg);
       sl_pp_context_destroy(&context);
       free(intokens);
       return GL_FALSE;
-- 
2.30.2