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gcc-4 -Og false positive "may be used uninitialised"

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binutils/
	* readelf.c (dump_section_as_strings) Avoid false positive
	"may be used uninitialised".
gas/
	* config/tc-arm.c (move_or_literal_pool): Avoid false positive
	"may be used uninitialised".
	(opcode_lookup): Likewise.
This commit is contained in:
Alan Modra 2020-08-24 12:58:14 +09:30
parent 85d14aaeb7
commit f3da8a96ee
4 changed files with 16 additions and 7 deletions
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5
binutils/ChangeLog
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@ -1,3 +1,8 @@
2020-08-24 Alan Modra <amodra@gmail.com>
* readelf.c (dump_section_as_strings) Avoid false positive
"may be used uninitialised".
2020-08-22 H.J. Lu <hongjiu.lu@intel.com> 2020-08-22 H.J. Lu <hongjiu.lu@intel.com>
PR ld/26382 PR ld/26382

2
binutils/readelf.c
View file

@ -13968,7 +13968,7 @@ dump_section_as_strings (Elf_Internal_Shdr * section, Filedata * filedata)
if (maxlen > 0) if (maxlen > 0)
{ {
char c; char c = 0;
while (maxlen) while (maxlen)
{ {

6
gas/ChangeLog
View file

@ -1,3 +1,9 @@
2020-08-24 Alan Modra <amodra@gmail.com>
* config/tc-arm.c (move_or_literal_pool): Avoid false positive
"may be used uninitialised".
(opcode_lookup): Likewise.
2020-08-24 Alan Modra <amodra@gmail.com> 2020-08-24 Alan Modra <amodra@gmail.com>
PR 26526 PR 26526

8
gas/config/tc-arm.c
View file

@ -8898,15 +8898,12 @@ move_or_literal_pool (int i, enum lit_type t, bfd_boolean mode_3)
/* Check if on thumb2 it can be done with a mov.w, mvn or /* Check if on thumb2 it can be done with a mov.w, mvn or
movw instruction. */ movw instruction. */
unsigned int newimm; unsigned int newimm;
bfd_boolean isNegated; bfd_boolean isNegated = FALSE;
newimm = encode_thumb32_immediate (v); newimm = encode_thumb32_immediate (v);
if (newimm != (unsigned int) FAIL) if (newimm == (unsigned int) FAIL)
isNegated = FALSE;
else
{ {
newimm = encode_thumb32_immediate (~v); newimm = encode_thumb32_immediate (~v);
if (newimm != (unsigned int) FAIL)
isNegated = TRUE; isNegated = TRUE;
} }
@ -22622,6 +22619,7 @@ opcode_lookup (char **str)
/* Look for unaffixed or special-case affixed mnemonic. */ /* Look for unaffixed or special-case affixed mnemonic. */
opcode = (const struct asm_opcode *) str_hash_find_n (arm_ops_hsh, base, opcode = (const struct asm_opcode *) str_hash_find_n (arm_ops_hsh, base,
end - base); end - base);
cond = NULL;
if (opcode) if (opcode)
{ {
/* step U */ /* step U */