https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77280
Bug ID: 77280
Summary: program using sizeof(array) fails after adding a
statement with sizeof(array)
Product: gcc
Version: lto
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jorg at bnl dot gov
Target Milestone: ---
Created attachment 39467
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39467&action=edit
source
Bug appears in:
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2)
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) (64 bit)
clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
Bug is not in:
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) (32 bit)
pgcc 15.7-0 (portland group)
The attached code works correctly when 1) the two lines
45 unsigned int lx = sizeof(t);
46 printf("lx %d\n", lx);
are removed or 2) the line
44 int a=0;
is added.
How to run:
>gcc 4.c
>a.out bug
should print
##### # # ####
# # # # #
##### # # #
# # # # # ###
# # # # # #
##### #### ####
lx 162
(The program was taken from www.gowrikumar.com/c/index.php)
