diff --git a/test/misc/Makefile b/test/misc/Makefile
index 81a09c693..1bb8c42ad 100644
--- a/test/misc/Makefile
+++ b/test/misc/Makefile
@@ -109,6 +109,28 @@ $(WORKDIR)/bug1265.$1.$2.prg: bug1265.c | $(WORKDIR)
 	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
 	$(NOT) $(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
 
+# this one fails with optimizations enabled
+$(WORKDIR)/bug1374.g.6502.prg: bug1374.c | $(WORKDIR)
+	$(if $(QUIET),echo misc/bug1374.g.6502.prg)
+	$(CC65) -t sim$2 -g -o $$(@:.prg=.s) $$< $(NULLERR)
+	$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
+	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
+	$(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
+
+$(WORKDIR)/bug1374.g.65c02.prg: bug1374.c | $(WORKDIR)
+	$(if $(QUIET),echo misc/bug1374.g.65c02.prg)
+	$(CC65) -t sim$2 -g -o $$(@:.prg=.s) $$< $(NULLERR)
+	$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
+	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
+	$(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
+
+$(WORKDIR)/bug1374.$1.$2.prg: bug1374.c | $(WORKDIR)
+	$(if $(QUIET),echo misc/bug1374.$1.$2.prg)
+	$(CC65) -t sim$2 -$1 -o $$(@:.prg=.s) $$< $(NULLERR)
+	$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
+	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
+	$(NOT) $(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
+
 # should compile, but then hangs in an endless loop
 $(WORKDIR)/endless.$1.$2.prg: endless.c | $(WORKDIR)
 	$(if $(QUIET),echo misc/endless.$1.$2.prg)
diff --git a/test/misc/bug1374.c b/test/misc/bug1374.c
new file mode 100644
index 000000000..b55e75fee
--- /dev/null
+++ b/test/misc/bug1374.c
@@ -0,0 +1,83 @@
+
+/* test for bug#1374 */
+
+#include <stdint.h>
+#include <stdio.h>
+
+static int res = 0;
+
+int test1(void)
+{
+    uint8_t x = 0x89;
+    uint8_t y = 0xab;
+    uint16_t z = (x << 8) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test1b(void)
+{
+    uint8_t x = 0x89;
+    uint8_t y = 0xab;
+    uint16_t z = (x * 256) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test2(void)
+{
+    uint16_t x = 0x8900;
+    uint8_t y = 0xab;
+    uint16_t z = x | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test3(void)
+{
+    uint16_t x = 0x89;
+    uint8_t y = 0xab;
+    uint16_t z = (x << 8) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test3b(void)
+{
+    uint16_t x = 0x89;
+    uint8_t y = 0xab;
+    uint16_t z = (x * 256) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test4(void)
+{
+    uint8_t x = 0x89;
+    uint16_t y = 0xab;
+    uint16_t z = (x << 8) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int test4b(void)
+{
+    uint8_t x = 0x89;
+    uint16_t y = 0xab;
+    uint16_t z = (x * 256) | y;
+    printf("%x\n", z);
+    return (z == 0x89ab) ? 0 : 1;
+}
+
+int main(void)
+{
+    res |= test1();
+    res |= test2();
+    res |= test3();
+    res |= test4();
+    res |= test1b();
+    res |= test3b();
+    res |= test4b();
+    printf("res: %d\n", res);
+    return res;
+}