gcc-4 -Og false positive "may be used uninitialised"
Alan Modra
amodra@gmail.com
Mon Aug 24 03:58:13 GMT 2020
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.
diff --git a/binutils/readelf.c b/binutils/readelf.c
index c47a77ca8f..86be92e3b0 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -13968,7 +13968,7 @@ dump_section_as_strings (Elf_Internal_Shdr * section, Filedata * filedata)
if (maxlen > 0)
{
- char c;
+ char c = 0;
while (maxlen)
{
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index c5ad2607b3..3eb7e9640a 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -8898,16 +8898,13 @@ 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
movw instruction. */
unsigned int newimm;
- bfd_boolean isNegated;
+ bfd_boolean isNegated = FALSE;
newimm = encode_thumb32_immediate (v);
- if (newimm != (unsigned int) FAIL)
- isNegated = FALSE;
- else
+ if (newimm == (unsigned int) FAIL)
{
newimm = encode_thumb32_immediate (~v);
- if (newimm != (unsigned int) FAIL)
- isNegated = TRUE;
+ isNegated = TRUE;
}
/* The number can be loaded with a mov.w or mvn
@@ -22622,6 +22619,7 @@ opcode_lookup (char **str)
/* Look for unaffixed or special-case affixed mnemonic. */
opcode = (const struct asm_opcode *) str_hash_find_n (arm_ops_hsh, base,
end - base);
+ cond = NULL;
if (opcode)
{
/* step U */
--
Alan Modra
Australia Development Lab, IBM
More information about the Binutils
mailing list