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glthread: fix a crash with incorrect glShaderSource parameters

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Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3948>
This commit is contained in:
Marek Olšák
2020-02-24 20:46:02 -05:00
committed by Marge Bot
parent c5825b7b6e
commit 57a9c1ee47
1 changed files with 1 additions and 1 deletions
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src/mesa/main/marshal.c
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@@ -111,7 +111,7 @@ _mesa_marshal_ShaderSource(GLuint shader, GLsizei count,
measure_ShaderSource_strings(count, string, length, length_tmp);
size_t total_cmd_size = fixed_cmd_size + length_size + total_string_length;
if (total_cmd_size <= MARSHAL_MAX_CMD_SIZE) {
if (total_cmd_size <= MARSHAL_MAX_CMD_SIZE && count > 0) {
struct marshal_cmd_ShaderSource *cmd =
_mesa_glthread_allocate_command(ctx, DISPATCH_CMD_ShaderSource,
total_cmd_size);