File micropython-gcc15-string-initialization.patch of Package micropython
From 531d4839d44a90447c232d51d1bee0cae45add9a Mon Sep 17 00:00:00 2001
From: Angus Gratton <angus@redyak.com.au>
Date: Fri, 9 May 2025 13:34:37 +1000
Subject: [PATCH 1/3] extmod/moductypes: Refactor string literal as array
initializer.
Avoids the new Wunterminated-string-literal when compiled with gcc 15.1.
Also split out the duplicate string to a top-level array (probably the
duplicate string literal was interned, so unlikely to have any impact.)
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
---
extmod/moductypes.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/extmod/moductypes.c b/extmod/moductypes.c
index bf45797658fa0..54abce79e06fe 100644
--- a/extmod/moductypes.c
+++ b/extmod/moductypes.c
@@ -277,15 +277,18 @@ static mp_obj_t uctypes_struct_sizeof(size_t n_args, const mp_obj_t *args) {
}
static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(uctypes_struct_sizeof_obj, 1, 2, uctypes_struct_sizeof);
+static const char type2char[16] = {
+ 'B', 'b', 'H', 'h', 'I', 'i', 'Q', 'q',
+ '-', '-', '-', '-', '-', '-', 'f', 'd'
+};
+
static inline mp_obj_t get_unaligned(uint val_type, byte *p, int big_endian) {
char struct_type = big_endian ? '>' : '<';
- static const char type2char[16] = "BbHhIiQq------fd";
return mp_binary_get_val(struct_type, type2char[val_type], p, &p);
}
static inline void set_unaligned(uint val_type, byte *p, int big_endian, mp_obj_t val) {
char struct_type = big_endian ? '>' : '<';
- static const char type2char[16] = "BbHhIiQq------fd";
mp_binary_set_val(struct_type, type2char[val_type], val, p, &p);
}
From 0398873d8c8096d2054db130efd1fcecba2a426d Mon Sep 17 00:00:00 2001
From: Angus Gratton <angus@redyak.com.au>
Date: Fri, 9 May 2025 13:36:05 +1000
Subject: [PATCH 2/3] py/emitinlinethumb: Refactor string literal as array
initializer.
Avoids the new Wunterminated-string-literal when compiled with gcc 15.1.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
---
py/emitinlinethumb.c | 108 +++++++++++++++++++++----------------------
1 file changed, 54 insertions(+), 54 deletions(-)
diff --git a/py/emitinlinethumb.c b/py/emitinlinethumb.c
index 7818bb4f46da8..d6596337ae5a6 100644
--- a/py/emitinlinethumb.c
+++ b/py/emitinlinethumb.c
@@ -150,27 +150,27 @@ typedef struct _reg_name_t { byte reg;
byte name[3];
} reg_name_t;
static const reg_name_t reg_name_table[] = {
- {0, "r0\0"},
- {1, "r1\0"},
- {2, "r2\0"},
- {3, "r3\0"},
- {4, "r4\0"},
- {5, "r5\0"},
- {6, "r6\0"},
- {7, "r7\0"},
- {8, "r8\0"},
- {9, "r9\0"},
- {10, "r10"},
- {11, "r11"},
- {12, "r12"},
- {13, "r13"},
- {14, "r14"},
- {15, "r15"},
- {10, "sl\0"},
- {11, "fp\0"},
- {13, "sp\0"},
- {14, "lr\0"},
- {15, "pc\0"},
+ {0, {'r', '0' }},
+ {1, {'r', '1' }},
+ {2, {'r', '2' }},
+ {3, {'r', '3' }},
+ {4, {'r', '4' }},
+ {5, {'r', '5' }},
+ {6, {'r', '6' }},
+ {7, {'r', '7' }},
+ {8, {'r', '8' }},
+ {9, {'r', '9' }},
+ {10, {'r', '1', '0' }},
+ {11, {'r', '1', '1' }},
+ {12, {'r', '1', '2' }},
+ {13, {'r', '1', '3' }},
+ {14, {'r', '1', '4' }},
+ {15, {'r', '1', '5' }},
+ {10, {'s', 'l' }},
+ {11, {'f', 'p' }},
+ {13, {'s', 'p' }},
+ {14, {'l', 'r' }},
+ {15, {'p', 'c' }},
};
#define MAX_SPECIAL_REGISTER_NAME_LENGTH 7
@@ -368,20 +368,20 @@ typedef struct _cc_name_t { byte cc;
byte name[2];
} cc_name_t;
static const cc_name_t cc_name_table[] = {
- { ASM_THUMB_CC_EQ, "eq" },
- { ASM_THUMB_CC_NE, "ne" },
- { ASM_THUMB_CC_CS, "cs" },
- { ASM_THUMB_CC_CC, "cc" },
- { ASM_THUMB_CC_MI, "mi" },
- { ASM_THUMB_CC_PL, "pl" },
- { ASM_THUMB_CC_VS, "vs" },
- { ASM_THUMB_CC_VC, "vc" },
- { ASM_THUMB_CC_HI, "hi" },
- { ASM_THUMB_CC_LS, "ls" },
- { ASM_THUMB_CC_GE, "ge" },
- { ASM_THUMB_CC_LT, "lt" },
- { ASM_THUMB_CC_GT, "gt" },
- { ASM_THUMB_CC_LE, "le" },
+ { ASM_THUMB_CC_EQ, { 'e', 'q' }},
+ { ASM_THUMB_CC_NE, { 'n', 'e' }},
+ { ASM_THUMB_CC_CS, { 'c', 's' }},
+ { ASM_THUMB_CC_CC, { 'c', 'c' }},
+ { ASM_THUMB_CC_MI, { 'm', 'i' }},
+ { ASM_THUMB_CC_PL, { 'p', 'l' }},
+ { ASM_THUMB_CC_VS, { 'v', 's' }},
+ { ASM_THUMB_CC_VC, { 'v', 'c' }},
+ { ASM_THUMB_CC_HI, { 'h', 'i' }},
+ { ASM_THUMB_CC_LS, { 'l', 's' }},
+ { ASM_THUMB_CC_GE, { 'g', 'e' }},
+ { ASM_THUMB_CC_LT, { 'l', 't' }},
+ { ASM_THUMB_CC_GT, { 'g', 't' }},
+ { ASM_THUMB_CC_LE, { 'l', 'e' }},
};
typedef struct _format_4_op_t { byte op;
@@ -389,21 +389,21 @@ typedef struct _format_4_op_t { byte op;
} format_4_op_t;
#define X(x) (((x) >> 4) & 0xff) // only need 1 byte to distinguish these ops
static const format_4_op_t format_4_op_table[] = {
- { X(ASM_THUMB_FORMAT_4_EOR), "eor" },
- { X(ASM_THUMB_FORMAT_4_LSL), "lsl" },
- { X(ASM_THUMB_FORMAT_4_LSR), "lsr" },
- { X(ASM_THUMB_FORMAT_4_ASR), "asr" },
- { X(ASM_THUMB_FORMAT_4_ADC), "adc" },
- { X(ASM_THUMB_FORMAT_4_SBC), "sbc" },
- { X(ASM_THUMB_FORMAT_4_ROR), "ror" },
- { X(ASM_THUMB_FORMAT_4_TST), "tst" },
- { X(ASM_THUMB_FORMAT_4_NEG), "neg" },
- { X(ASM_THUMB_FORMAT_4_CMP), "cmp" },
- { X(ASM_THUMB_FORMAT_4_CMN), "cmn" },
- { X(ASM_THUMB_FORMAT_4_ORR), "orr" },
- { X(ASM_THUMB_FORMAT_4_MUL), "mul" },
- { X(ASM_THUMB_FORMAT_4_BIC), "bic" },
- { X(ASM_THUMB_FORMAT_4_MVN), "mvn" },
+ { X(ASM_THUMB_FORMAT_4_EOR), {'e', 'o', 'r' }},
+ { X(ASM_THUMB_FORMAT_4_LSL), {'l', 's', 'l' }},
+ { X(ASM_THUMB_FORMAT_4_LSR), {'l', 's', 'r' }},
+ { X(ASM_THUMB_FORMAT_4_ASR), {'a', 's', 'r' }},
+ { X(ASM_THUMB_FORMAT_4_ADC), {'a', 'd', 'c' }},
+ { X(ASM_THUMB_FORMAT_4_SBC), {'s', 'b', 'c' }},
+ { X(ASM_THUMB_FORMAT_4_ROR), {'r', 'o', 'r' }},
+ { X(ASM_THUMB_FORMAT_4_TST), {'t', 's', 't' }},
+ { X(ASM_THUMB_FORMAT_4_NEG), {'n', 'e', 'g' }},
+ { X(ASM_THUMB_FORMAT_4_CMP), {'c', 'm', 'p' }},
+ { X(ASM_THUMB_FORMAT_4_CMN), {'c', 'm', 'n' }},
+ { X(ASM_THUMB_FORMAT_4_ORR), {'o', 'r', 'r' }},
+ { X(ASM_THUMB_FORMAT_4_MUL), {'m', 'u', 'l' }},
+ { X(ASM_THUMB_FORMAT_4_BIC), {'b', 'i', 'c' }},
+ { X(ASM_THUMB_FORMAT_4_MVN), {'m', 'v', 'n' }},
};
#undef X
@@ -428,10 +428,10 @@ typedef struct _format_vfp_op_t {
char name[3];
} format_vfp_op_t;
static const format_vfp_op_t format_vfp_op_table[] = {
- { 0x30, "add" },
- { 0x34, "sub" },
- { 0x20, "mul" },
- { 0x80, "div" },
+ { 0x30, {'a', 'd', 'd' }},
+ { 0x34, {'s', 'u', 'b' }},
+ { 0x20, {'m', 'u', 'l' }},
+ { 0x80, {'d', 'i', 'v' }},
};
// shorthand alias for whether we allow ARMv7-M instructions
From bfd5a0350a0d53f52695d373dae6ee367971b145 Mon Sep 17 00:00:00 2001
From: Angus Gratton <angus@redyak.com.au>
Date: Fri, 9 May 2025 14:34:09 +1000
Subject: [PATCH 3/3] lib/littlefs: Fix string initializer in lfs1.c.
Avoids the new Wunterminated-string-literal when compiled with gcc 15.1.
It would be preferable to just disable this warning, but Clang
-Wunknown-warning-option kicks in even when disabling warnings so this
becomes fiddly to apply.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
---
lib/littlefs/lfs1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/littlefs/lfs1.c b/lib/littlefs/lfs1.c
index 6a3fd670012cc..ec18dc470258c 100644
--- a/lib/littlefs/lfs1.c
+++ b/lib/littlefs/lfs1.c
@@ -2141,7 +2141,7 @@ int lfs1_format(lfs1_t *lfs1, const struct lfs1_config *cfg) {
.d.elen = sizeof(superblock.d) - sizeof(superblock.d.magic) - 4,
.d.nlen = sizeof(superblock.d.magic),
.d.version = LFS1_DISK_VERSION,
- .d.magic = {"littlefs"},
+ .d.magic = {'l', 'i', 't', 't', 'l', 'e', 'f', 's'},
.d.block_size = lfs1->cfg->block_size,
.d.block_count = lfs1->cfg->block_count,
.d.root = {lfs1->root[0], lfs1->root[1]},
