[virglrenderer-devel] [PATCH 05/16] gallium/aux/tgsi/tgsi_parse.c: Fix warnings

[Gert Wollny]

tgsi_parse.c: In function 'tgsi_parse_free':
tgsi_parse.c:54:31: warning: unused parameter 'ctx' [-Wunused-parameter]
    struct tgsi_parse_context *ctx )
                               ^~~
tgsi_parse.c: In function 'tgsi_parse_end_of_tokens':
tgsi_parse.c:62:25: warning: comparison between signed and unsigned
integer expressions [-Wsign-compare]
    return ctx->Position >=

Signed-off-by: Gert Wollny <gert.wollny at collabora.com>
---
 src/gallium/auxiliary/tgsi/tgsi_parse.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_parse.c b/src/gallium/auxiliary/tgsi/tgsi_parse.c
index 8891153..95d1616 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_parse.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_parse.c
@@ -53,14 +53,19 @@ void
 tgsi_parse_free(
    struct tgsi_parse_context *ctx )
 {
+   VREND_UNUSED(ctx);
 }
 
 boolean
 tgsi_parse_end_of_tokens(
    struct tgsi_parse_context *ctx )
 {
-   return ctx->Position >=
-      ctx->FullHeader.Header.HeaderSize + ctx->FullHeader.Header.BodySize;
+   /* All values involved are unsigned, but the sum will be promoted to
+    * a signed value (at least on 64 bit). To capture a possible overflow
+    * make it a signed comparison.
+    */
+   return (int)ctx->Position >=
+         ctx->FullHeader.Header.HeaderSize + ctx->FullHeader.Header.BodySize;
 }
 
 
-- 
2.16.1