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author | Colin Snover | 2016-08-19 15:18:02 -0500 |
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committer | Colin Snover | 2016-08-19 15:23:10 -0500 |
commit | 7f23c91de9a784ebbd92a566f9c20cfc2f8a7534 (patch) | |
tree | 8cc2cc3a638e855947e5dbdad43e96efe5131231 | |
parent | da62a99a00c625886b1a3297387f1c164ce23861 (diff) | |
download | scummvm-rg350-7f23c91de9a784ebbd92a566f9c20cfc2f8a7534.tar.gz scummvm-rg350-7f23c91de9a784ebbd92a566f9c20cfc2f8a7534.tar.bz2 scummvm-rg350-7f23c91de9a784ebbd92a566f9c20cfc2f8a7534.zip |
SCI32: Fix limited data range comparison warning
On at least DC platform, the ShowStyleType enum is fit to a 4-bit
data size, so the 16-bit input value needs to be checked for
validity *before* it is cast to a 4-bit ShowStyleType.
-rw-r--r-- | engines/sci/engine/kgraphics32.cpp | 8 | ||||
-rw-r--r-- | engines/sci/graphics/transitions32.cpp | 4 |
2 files changed, 6 insertions, 6 deletions
diff --git a/engines/sci/engine/kgraphics32.cpp b/engines/sci/engine/kgraphics32.cpp index aa9fc18b20..13a209ea55 100644 --- a/engines/sci/engine/kgraphics32.cpp +++ b/engines/sci/engine/kgraphics32.cpp @@ -366,7 +366,7 @@ reg_t kMessageBox(EngineState *s, int argc, reg_t *argv) { * effect */ reg_t kSetShowStyle(EngineState *s, int argc, reg_t *argv) { - ShowStyleType type = (ShowStyleType)argv[0].toUint16(); + const uint16 type = argv[0].toUint16(); reg_t planeObj = argv[1]; int16 seconds = argv[2].toSint16(); // NOTE: This value seems to indicate whether the transition is an @@ -401,6 +401,10 @@ reg_t kSetShowStyle(EngineState *s, int argc, reg_t *argv) { divisions = argc > 9 ? argv[9].toSint16() : -1; } + if ((getSciVersion() < SCI_VERSION_2_1_MIDDLE && g_sci->getGameId() != GID_KQ7 && type == 15) || type > 15) { + error("Illegal show style %d for plane %04x:%04x", type, PRINT_REG(planeObj)); + } + // TODO: Reuse later for SCI2 and SCI3 implementation and then discard // warning("kSetShowStyle: effect %d, plane: %04x:%04x (%s), sec: %d, " // "dir: %d, prio: %d, animate: %d, ref frame: %d, black screen: %d, " @@ -412,7 +416,7 @@ reg_t kSetShowStyle(EngineState *s, int argc, reg_t *argv) { // NOTE: The order of planeObj and showStyle are reversed // because this is how SCI3 called the corresponding method // on the KernelMgr - g_sci->_gfxTransitions32->kernelSetShowStyle(argc, planeObj, type, seconds, back, priority, animate, refFrame, pFadeArray, divisions, blackScreen); + g_sci->_gfxTransitions32->kernelSetShowStyle(argc, planeObj, (ShowStyleType)type, seconds, back, priority, animate, refFrame, pFadeArray, divisions, blackScreen); return s->r_acc; } diff --git a/engines/sci/graphics/transitions32.cpp b/engines/sci/graphics/transitions32.cpp index bceb0fa84d..37f608da85 100644 --- a/engines/sci/graphics/transitions32.cpp +++ b/engines/sci/graphics/transitions32.cpp @@ -203,10 +203,6 @@ void GfxTransitions32::kernelSetShowStyle(const uint16 argc, const reg_t planeOb color = 0; } - if ((getSciVersion() < SCI_VERSION_2_1_MIDDLE && g_sci->getGameId() != GID_KQ7 && type == 15) || type > 15) { - error("Illegal show style %d for plane %04x:%04x", type, PRINT_REG(planeObj)); - } - Plane *plane = g_sci->_gfxFrameout->getPlanes().findByObject(planeObj); if (plane == nullptr) { error("Plane %04x:%04x is not present in active planes list", PRINT_REG(planeObj)); |