Bug Summary

File:select/properties/elevation.c
Warning:line 42, column 2
Value stored to 'unit' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name elevation.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/var/lib/jenkins/workspace/scan-build-libcss -resource-dir /usr/lib/llvm-14/lib/clang/14.0.6 -D _BSD_SOURCE -D _DEFAULT_SOURCE -I /var/lib/jenkins/workspace/scan-build-libcss/include/ -I /var/lib/jenkins/workspace/scan-build-libcss/src -D _ALIGNED=__attribute__((aligned)) -D STMTEXPR=1 -D DEBUG -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -internal-isystem /usr/lib/llvm-14/lib/clang/14.0.6/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Og -Wwrite-strings -Wno-error -std=c99 -fconst-strings -fdebug-compilation-dir=/var/lib/jenkins/workspace/scan-build-libcss -ferror-limit 19 -fgnuc-version=4.2.1 -analyzer-display-progress -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /var/lib/jenkins/workspace/scan-build-libcss/clangScanBuildReports/2024-05-26-194843-2628385-1 -x c src/select/properties/elevation.c
1/*
2 * This file is part of LibCSS
3 * Licensed under the MIT License,
4 * http://www.opensource.org/licenses/mit-license.php
5 * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
6 */
7
8#include "bytecode/bytecode.h"
9#include "bytecode/opcodes.h"
10#include "select/propset.h"
11#include "select/propget.h"
12#include "utils/utils.h"
13
14#include "select/properties/properties.h"
15#include "select/properties/helpers.h"
16
17css_error css__cascade_elevation(uint32_t opv, css_style *style,
18 css_select_state *state)
19{
20 css_fixed val = 0;
21 uint32_t unit = UNIT_DEG;
22
23 if (hasFlagValue(opv) == false0) {
24 switch (getValue(opv)) {
25 case ELEVATION_ANGLE:
26 val = *((css_fixed *) style->bytecode);
27 advance_bytecode(style, sizeof(val));
28
29 unit = *((uint32_t *) style->bytecode);
30 advance_bytecode(style, sizeof(unit));
31 break;
32 case ELEVATION_BELOW:
33 case ELEVATION_LEVEL:
34 case ELEVATION_ABOVE:
35 case ELEVATION_HIGHER:
36 case ELEVATION_LOWER:
37 /** \todo convert to public values */
38 break;
39 }
40 }
41
42 unit = css__to_css_unit(unit);
Value stored to 'unit' is never read
43
44 if (css__outranks_existing(getOpcode(opv), isImportant(opv), state,
45 getFlagValue(opv))) {
46 /** \todo set computed elevation */
47 }
48
49 return CSS_OK;
50}
51
52css_error css__set_elevation_from_hint(const css_hint *hint,
53 css_computed_style *style)
54{
55 UNUSED(hint)((void)(hint));
56 UNUSED(style)((void)(style));
57
58 return CSS_OK;
59}
60
61css_error css__initial_elevation(css_select_state *state)
62{
63 UNUSED(state)((void)(state));
64
65 return CSS_OK;
66}
67
68css_error css__copy_elevation(
69 const css_computed_style *from,
70 css_computed_style *to)
71{
72 UNUSED(from)((void)(from));
73 UNUSED(to)((void)(to));
74
75 return CSS_OK;
76}
77
78css_error css__compose_elevation(const css_computed_style *parent,
79 const css_computed_style *child,
80 css_computed_style *result)
81{
82 UNUSED(parent)((void)(parent));
83 UNUSED(child)((void)(child));
84 UNUSED(result)((void)(result));
85
86 return CSS_OK;
87}
88