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-rw-r--r--progs/demos/terrain.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/progs/demos/terrain.c b/progs/demos/terrain.c
index da5b90d300c..9063c939d5e 100644
--- a/progs/demos/terrain.c
+++ b/progs/demos/terrain.c
@@ -572,7 +572,7 @@ loadpic(void)
if ((gluerr = gluBuild2DMipmaps(GL_TEXTURE_2D, 1, 256, 256, GL_LUMINANCE,
GL_UNSIGNED_BYTE,
(GLvoid *) (&terrainpic[0])))) {
- fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+ fprintf(stderr, "GLULib%s\n", (char *) gluErrorString(gluerr));
exit(-1);
}