https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97884
Bug ID: 97884
Summary: INT_MIN falsely expanded to 64 bit
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: s.baur...@tu-berlin.de
Target Milestone: ---
Created attachment 49583
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49583&action=edit
example file
arm-none-eabi-gcc: when compiling
printf("%i\n", -2147483648);
printf("%i\n", (int)-2147483648);
INT_MIN in the first call gets recognized as a 64 bit argument and split across
r2 and r3. r1 remains untouched. In the second call, INT_MIN is correctly put
into r1:
8: e3a02102 mov r2, #-2147483648 ; 0x80000000
c: e3e03000 mvn r3, #0
10: e59f0010 ldr r0, [pc, #16] ; 28
<start_kernel+0x28>
14: ebfffffe bl 0 <printf>
18: e3a01102 mov r1, #-2147483648 ; 0x80000000
1c: e59f0004 ldr r0, [pc, #4] ; 28
<start_kernel+0x28>
20: ebfffffe bl 0 <printf>
Source file attached was compiled with
arm-none-eabi-gcc -v -save-temps -c start.c -o start.o
gcc 10.2.0 was configured with
--target=arm-none-eabi --prefix=$(PREFIX) --enable-interwork
--enable-languages="c" --with-newlib --without-headers --disable-nls
