handle dynamic indexes properly, even out of bounds, for array gep lookups; fixes #865

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/cases/oob_ta2.ll b/tests/cases/oob_ta2.ll
new file mode 100644
index 00000000..3c94c13c
--- /dev/null
+++ b/tests/cases/oob_ta2.ll
@@ -0,0 +1,25 @@
+; ModuleID = 'tests/hello_world.bc'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
+target triple = "i386-pc-linux-gnu"
+
+%structy = type { [2 x [10 x i8]] }
+
+@.str1 = private unnamed_addr constant [10 x i8] c"1234567890", align 1
+@.str2 = private unnamed_addr constant [10 x i8] c"wakawaka\0A\00", align 1
+@.stry = private unnamed_addr constant [2 x %structy] { %structy { [10 x i8] @.str1, [10 x i8] @.str2 }, %structy { [10 x i8] @.str1, [10 x i8] @.str2 } }
+
+@.str = private unnamed_addr constant [15 x i8] c"hello, world!\0A\00", align 1 ; [#uses=1 type=[15 x i8]*]
+
+; [#uses=0]
+define i32 @main(i32 %argc, i8** %argv) {
+entry:
+  %retval = alloca i32, align 4                   ; [#uses=1 type=i32*]
+  store i32 0, i32* %retval
+  %ind = add i32 %argc, 13
+  %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([2 x %structy]* @.stry, i32 0, i32 2, i32 0, i32 %ind))
+  %call2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([15 x i8]* @.str, i32 0, i32 0)) ; [#uses=0 type=i32]
+  ret i32 1  ret i32 1
+}
+
+; [#uses=1]
+declare i32 @printf(i8*, ...)