fixdep: fix CONFIG_IS_ENABLED etc. handling
When fixdep detects CONFIG_IS_ENABLED and other similar macros, it must parse the macro parameter to determine which actual CONFIG_ option is being referenced. This involves moving a pointer forward through the entire CONFIG_ option "word". Currently, the code uses variable q to walk through the word, but doesn't actually initialize it to point at the parameter before doing so. Consequently, the walking process immediately fails since it sees the macro invocatoins's ( rather than the expected alpha-numeric characters in the macro parameter. Fix this by adding the missing initialization. Fixes:67f2ee86cc
("kbuild: fixdep: Resync this with v4.17") Fixes:7012865e96
("gpio: fix test.py for gpio label lookup") Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -266,6 +266,7 @@ static void parse_config_file(const char *p)
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(q - p == 9 && !memcmp(p, "IS_MODULE(", 10)) ||
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(q - p == 3 && !memcmp(p, "VAL(", 4))) {
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p = q + 1;
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q = p;
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while (isalnum(*q) || *q == '_')
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q++;
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r = q;
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