https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82286
Bug ID: 82286
Summary: Wrong array subscript is above array bounds
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: hermantenbrugge at home dot nl
Target Milestone: ---
Created attachment 42223
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42223&action=edit
testcase
The attached testcase reports array bound error if compiled with:
gcc -O3 -Wall -c tst.c -DERROR
tst.c: In function 'mtrx_decompose_matrix':
tst.c:36:17: warning: array subscript is above array bounds [-Warray-bounds]
sum += tmp.data[row][sub] * tmp.data[col][sub];
~~~~~~~~^~~~~
If -DERROR is not given the testcase compiles with no warning.
