Blame SOURCES/0004-xkbcomp-Don-t-falsely-promise-from-ExprResolveLhs.patch
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From 69f69b943d9f4777192b6cd9632ab41a363c62ae Mon Sep 17 00:00:00 2001
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From: Daniel Stone <daniels@collabora.com>
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Date: Mon, 26 Jun 2017 17:21:45 +0100
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Subject: [PATCH 04/10] xkbcomp: Don't falsely promise from ExprResolveLhs
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Every user of ExprReturnLhs goes on to unconditionally dereference the
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field return, which can be NULL if xkb_intern_atom fails. Return false
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if this is the case, so we fail safely.
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testcase: splice geometry data into interp
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Signed-off-by: Daniel Stone <daniels@collabora.com>
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(cherry picked from commit 38e1766bc6e20108948aec8a0b222a4bad0254e9)
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---
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src/xkbcomp/expr.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/xkbcomp/expr.c b/src/xkbcomp/expr.c
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index d5dd62f..07d67e9 100644
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--- a/src/xkbcomp/expr.c
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+++ b/src/xkbcomp/expr.c
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@@ -42,7 +42,7 @@ ExprResolveLhs(struct xkb_context *ctx, const ExprDef *expr,
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*elem_rtrn = NULL;
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*field_rtrn = xkb_atom_text(ctx, expr->ident.ident);
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*index_rtrn = NULL;
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- return true;
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+ return (*field_rtrn != NULL);
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case EXPR_FIELD_REF:
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*elem_rtrn = xkb_atom_text(ctx, expr->field_ref.element);
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*field_rtrn = xkb_atom_text(ctx, expr->field_ref.field);
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--
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2.20.1
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