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sixel: fix NULL deref when using a shared palette and gamma-correct blending

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This fixes a copy-paste error where we read/modified/wrote the
private-palette instead of the shared palette.

Since the private palette is NULL in this case, that meant a crash.

Closes #2370
This commit is contained in:
Daniel Eklöf 2026-06-12 18:09:02 +02:00
parent c9c448e611
commit 75e201608b
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GPG key ID: 5BBD4992C116573F
2 changed files with 7 additions and 4 deletions
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8
sixel.c
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@ -169,10 +169,10 @@ sixel_init(struct terminal *term, int p1, int p2, int p3)
if (term->sixel.linear_blending || term->sixel.use_10bit) {
for (size_t i = 0; i < active_palette_entries; i++) {
uint8_t r = (term->sixel.private_palette[i] >> 16) & 0xff;
uint8_t g = (term->sixel.private_palette[i] >> 8) & 0xff;
uint8_t b = (term->sixel.private_palette[i] >> 0) & 0xff;
term->sixel.private_palette[i] = color_decode_srgb(term, r, g, b);
uint8_t r = (term->sixel.shared_palette[i] >> 16) & 0xff;
uint8_t g = (term->sixel.shared_palette[i] >> 8) & 0xff;
uint8_t b = (term->sixel.shared_palette[i] >> 0) & 0xff;
term->sixel.shared_palette[i] = color_decode_srgb(term, r, g, b);
}
}
} else {