From 00c427a20fff0505f4b99315cf300a37ff7c1c63 Mon Sep 17 00:00:00 2001
From: Boris Faure <billiob@gmail.com>
Date: Wed, 22 Apr 2020 23:52:58 +0200
Subject: [PATCH] termptyesc: avoid issue with integer promotion

Found by UBSan:
sgr-truecolors.sh... ../src/bin/termptyesc.c:737:35: runtime error: left
shift of 244 by 24 places cannot be represented in type 'int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
../src/bin/termptyesc.c:737:35 in
---
 src/bin/termptyesc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/bin/termptyesc.c b/src/bin/termptyesc.c
index 3cb64ca3..957ce704 100644
--- a/src/bin/termptyesc.c
+++ b/src/bin/termptyesc.c
@@ -734,7 +734,10 @@ _approximate_truecolor_rgb(Termpty *ty, int r0, int g0, int b0)
    int c;
    int distance_min = INT_MAX;
    Evas_Object *textgrid;
-   const uint32_t color_msb = (r0 << 24) | (g0 << 16) | (b0 << 8);
+   const uint32_t color_msb = 0
+      | (((uint8_t)r0) << 24)
+      | (((uint8_t)g0) << 16)
+      | (((uint8_t)b0) << 8);
 
    if (_tcc_find(color_msb, &chosen_color))
      return chosen_color;