MatCat.OpenSource/8sa1-binutils-gdb
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gas warning fixes

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Some versions of gcc with -Werror=format-overflow complain about using
a perfectly good 7 char buffer for "r%dr%d" when the int is between 0
and 64, apparently not seeing the value range.

note: __builtin___sprintf_chk output between 5 and 24 bytes into a destination of size 7

	* config/tc-arc.c (declare_register_set): Avoid false positive
	format-overflow warning.
	* config/tc-epiphany.c (md_assemble): Likewise.
	* config/tc-mips.c (md_begin): Likewise.
	* config/tc-mmix.c (mmix_md_begin): Likewise.
	* config/tc-nds32.c (nds32_elf_append_relax_relocs): Avoid false
	positive "may be used uninitialized" warning.
This commit is contained in:
Alan Modra 2020-08-25 09:57:58 +09:30
parent 8d30354667
commit ca159256b4
6 changed files with 16 additions and 5 deletions
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10
gas/ChangeLog
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@ -1,3 +1,13 @@
2020-08-25 Alan Modra <amodra@gmail.com>
* config/tc-arc.c (declare_register_set): Avoid false positive
format-overflow warning.
* config/tc-epiphany.c (md_assemble): Likewise.
* config/tc-mips.c (md_begin): Likewise.
* config/tc-mmix.c (mmix_md_begin): Likewise.
* config/tc-nds32.c (nds32_elf_append_relax_relocs): Avoid false
positive "may be used uninitialized" warning.
2020-08-24 Cooper Qu <cooper.qu@linux.alibaba.com>
* config/tc-csky.c (csky_archs): Add item for CK860,

2
gas/config/tc-arc.c
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@ -2562,7 +2562,7 @@ declare_register_set (void)
int i;
for (i = 0; i < 64; ++i)
{
char name[7];
char name[32];
sprintf (name, "r%d", i);
declare_register (name, i);

4
gas/config/tc-epiphany.c
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@ -550,7 +550,7 @@ md_assemble (char *str)
if (push && regmask)
{
char buff[20];
char buff[32];
int i,p ATTRIBUTE_UNUSED;
epiphany_assemble ("mov r15,4");
@ -570,7 +570,7 @@ md_assemble (char *str)
}
else if (pop && regmask)
{
char buff[20];
char buff[32];
int i,p;
epiphany_assemble ("mov r15,4");

2
gas/config/tc-mips.c
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@ -3806,7 +3806,7 @@ md_begin (void)
for (i = 0; i < 32; i++)
{
char regname[6];
char regname[16];
/* R5900 VU0 floating-point register. */
sprintf (regname, "$vf%d", i);

2
gas/config/tc-mmix.c
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@ -780,7 +780,7 @@ mmix_md_begin (void)
/* We always insert the ordinary registers 0..255 as registers. */
for (i = 0; i < 256; i++)
{
char buf[5];
char buf[16];
/* Alternatively, we could diddle with '$' and the following number,
but keeping the registers as symbols helps keep parsing simple. */

1
gas/config/tc-nds32.c
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@ -6053,6 +6053,7 @@ nds32_elf_append_relax_relocs (const char *key, const void *value)
fixup_size = fixup_now->size;
/* Insert all fixup. */
pcrel = 0;
while (fixup_size != 0 && fixup_now->offset == offset)
{
/* Set the real instruction size in element. */