[0.4.x] libvisual: Address some more warnings#375
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…-to-pointer-cast) Symptom was: > lv_bmp.c: In function 'load_uncompressed': > lv_bmp.c:75:61: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] > 75 | uint8_t *end = (uint8_t *) ((int)data & ~1); > | ^ > lv_bmp.c:75:48: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] > 75 | uint8_t *end = (uint8_t *) ((int)data & ~1); > | ^ > lv_bmp.c:96:61: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] > 96 | uint8_t *end = (uint8_t *) ((int)data & ~7); > | ^ > lv_bmp.c:96:48: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] > 96 | uint8_t *end = (uint8_t *) ((int)data & ~7); > | ^
Symptom was: > ./gettext.h:71: error: "gettext_noop" redefined [-Werror] > 71 | #define gettext_noop(String) String > | > ./gettext.h:49: note: this is the location of the previous definition > 49 | # define gettext_noop(Msgid) ((const char *) (Msgid)) > |
Symptom was: > lv_bmp.c: In function 'visual_bitmap_load': > lv_bmp.c:286:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 286 | fread (magic, 2, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:294:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 294 | fread (&bf_size, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:301:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 301 | fread (&bf_bits, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:305:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 305 | fread (&bi_size, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:310:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 310 | fread (&bi_width, 2, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:311:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 311 | fread (&bi_height, 2, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:319:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 319 | fread (&bi_bitcount, 2, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:324:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 324 | fread (&bi_width, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:325:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 325 | fread (&bi_height, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:333:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 333 | fread (&bi_bitcount, 2, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:337:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 337 | fread (&bi_compression, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > lv_bmp.c:344:17: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result] > 344 | fread (&bi_clrused, 4, 1, fp); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Symptom was: > ../../libvisual-0.4.2/libvisual/lv_mem.c: In function 'mem_copy_altivec': > ../../libvisual-0.4.2/libvisual/lv_mem.c:379:1: error: no return statement in function returning non-void [-Werror=return-type] > 379 | } > | ^ > ../../libvisual-0.4.2/libvisual/lv_mem.c: In function 'mem_set8_altivec': > ../../libvisual-0.4.2/libvisual/lv_mem.c:529:1: error: no return statement in function returning non-void [-Werror=return-type] > 529 | } > | ^ > ../../libvisual-0.4.2/libvisual/lv_mem.c: In function 'mem_set16_altivec': > ../../libvisual-0.4.2/libvisual/lv_mem.c:673:1: error: no return statement in function returning non-void [-Werror=return-type] > 673 | } > | ^ > ../../libvisual-0.4.2/libvisual/lv_mem.c: In function 'mem_set32_altivec': > ../../libvisual-0.4.2/libvisual/lv_mem.c:784:1: error: no return statement in function returning non-void [-Werror=return-type] > 784 | } > | ^ > ../../libvisual-0.4.2/libvisual/lv_mem.c: At top level: > ../../libvisual-0.4.2/libvisual/lv_mem.c:781:14: error: 'mem_set32_altivec' defined but not used [-Werror=unused-function] > 781 | static void *mem_set32_altivec (void *dest, int c, visual_size_t n) > | ^~~~~~~~~~~~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_mem.c:670:14: error: 'mem_set16_altivec' defined but not used [-Werror=unused-function] > 670 | static void *mem_set16_altivec (void *dest, int c, visual_size_t n) > | ^~~~~~~~~~~~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_mem.c:526:14: error: 'mem_set8_altivec' defined but not used [-Werror=unused-function] > 526 | static void *mem_set8_altivec (void *dest, int c, visual_size_t n) > | ^~~~~~~~~~~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_mem.c:376:14: error: 'mem_copy_altivec' defined but not used [-Werror=unused-function] > 376 | static void *mem_copy_altivec (void *dest, const void *src, visual_size_t n) > | ^~~~~~~~~~~~~~~~
Symptom was: > ../../libvisual-0.4.2/libvisual/lv_video.c: In function 'visual_video_fill_color_rectangle': > ../../libvisual-0.4.2/libvisual/lv_video.c:1766:1: error: label 'out' defined but not used [-Werror=unused-label] > 1766 | out: > | ^~~
Symptom was: > ../../libvisual-0.4.2/libvisual/lv_plugin.c: In function 'plugin_add_dir_to_list': > ../../libvisual-0.4.2/libvisual/lv_plugin.c:605:39: error: '%s' directive output may be truncated writing up to 1023 bytes into a region of size 1022 [-Werror=format-truncation=] > 605 | snprintf (temp, 1023, "%s/%s", dir, namelist[i]->d_name); > | ^~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_plugin.c:605:43: note: format string is defined here > 605 | snprintf (temp, 1023, "%s/%s", dir, namelist[i]->d_name); > | ^~ > ../../libvisual-0.4.2/libvisual/lv_plugin.c:605:17: note: '__builtin_snprintf' output 2 or more bytes (assuming 1025) into a destination of size 1023 > 605 | snprintf (temp, 1023, "%s/%s", dir, namelist[i]->d_name); > | ^~~~~~~~ TRUNC
Symptom was: > ../../libvisual-0.4.2/libvisual/lv_audio.c:129:12: error: 'audio_band_energy' defined but not used [-Werror=unused-function] > 129 | static int audio_band_energy (VisAudio *audio, int band, int length) > | ^~~~~~~~~~~~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_audio.c:115:12: error: 'audio_band_total' defined but not used [-Werror=unused-function] > 115 | static int audio_band_total (VisAudio *audio, int begin, int end) > | ^~~~~~~~~~~~~~~~> ../../libvisual-0.4.2/libvisual/lv_audio.c:129:12: error: 'audio_band_energy' defined but not used [-Werror=unused-function] > 129 | static int audio_band_energy (VisAudio *audio, int band, int length) > | ^~~~~~~~~~~~~~~~~ > ../../libvisual-0.4.2/libvisual/lv_audio.c:115:12: error: 'audio_band_total' defined but not used [-Werror=unused-function] > 115 | static int audio_band_total (VisAudio *audio, int begin, int end) > | ^~~~~~~~~~~~~~~~
Symptom was: > ../../libvisual-0.4.2/libvisual/lv_audio.c:1111:2: error: variable 'signedcorr' is uninitialized when used here [-Werror,-Wuninitialized] > signedcorr += byte_max_numeric (size) / 2; > ^~~~~~~~~~
hartwork
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hartwork
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kaixiong
reviewed
Dec 24, 2024
| /* Unpack 4 bpp pixels aka 2 pixels per byte */ | ||
| uint8_t *col = data - video->pitch; | ||
| uint8_t *end = (uint8_t *) ((int)data & ~1); | ||
| uint8_t *end = (uint8_t *) ((uintptr_t)data & ~1); |
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Wow, this is atrocious. This arithmetic trick also depends on the memory alignment of the data pointer to be 8 bytes or more, but this assumption seems to be relatively safe.
kaixiong
approved these changes
Dec 24, 2024
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@kaixiong thanks for the review! 🙏 |
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